JPH11146405A - Video signal processor and color video camera using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable only a specified color area (a skin color area) to be detected by a simple circuit structure by allowing focusing area setting means to make the skin color area detected by a skin color detection means the focusing area. SOLUTION: The device is equipped with a focus lens for focusing a subject, a focus area setting means which sets a focus area for focusing the subject, a focusing control means for controlling the focus lens so that an obtained video signal can be focused in the focus area and a skin color detection means for detecting a skin color area of the subject. The focus area setting means is structured so that the skin color area detected by the skin color detection means is made to be a focus area. In this case, a closed area (a hatching part) on a two-dimensional plane by a R-Y axis and a B-Y axis of a color difference of the video signal is detected as the skin color area. The skin color area thus detected changes in accordance with a level of luminance signal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video signal processing device and a color video camera using the same.

[0002]

2. Description of the Related Art FIG. 1 is a block diagram of a conventional video signal processing apparatus. In FIG. 1, 1 is an RY color difference signal input terminal, 2 is a BY color difference signal input terminal, 3 is a luminance signal input terminal, 4 is an aperture correction signal input terminal, 5 is an RY color difference signal output terminal, and 6 Is B
-Y color difference signal output terminal, 7 is a luminance signal output terminal, 8 is an aperture correction signal output terminal, 9 to 12 are control signal input terminals, and 13 to 16 are gain control circuits.

Next, the operation will be described. Each of the color difference signals input from the RY color difference signal input terminal 1 and the BY color difference signal input terminal 2 is controlled in gain by the control signals D1 and D2 in gain control circuits 13 and 14 in order to perform appropriate color reproduction. Then, the signals are output from an RY color difference signal output terminal 5 and a BY color difference signal output terminal 6. Also, a luminance signal input terminal 3
The input luminance signal is controlled by the control signal D3 in the gain control circuit 15, and the luminance signal output terminal 7
Output more. Further, the gain of the aperture correction signal input from the aperture correction signal input terminal 4 is controlled by the control signal D4 in the gain control circuit 16, and is output from the aperture correction signal output terminal 8.

FIG. 2 is a block diagram showing another conventional video signal processing apparatus. In FIG. 2, the same reference numerals as in FIG. 1 denote the same or corresponding parts, and reference numerals 17 and 18 denote arithmetic circuits.

Next, the operation will be described. The RY color difference signal input from the RY color difference signal input terminal 1 is input to the arithmetic circuit 17 and the gain control circuit 14. The BY color difference signal input from the BY color difference signal input terminal 2 is
And input to the gain control circuit 13. In order to perform appropriate color reproduction, the gain control circuits 13 and 14 control signals D5 and D
6 controls the gain. The output of the gain control circuit 13 is input to the arithmetic circuit 17. The output of the gain control circuit 14 is input to the arithmetic circuit 18. The arithmetic circuits 17 and 18 add the two input signals and output the signals from an RY color difference signal output terminal 5 and a BY color difference signal output terminal 6.

Since the conventional video signal processing apparatus is configured as described above, there are the following problems. The gain of the color difference signal can be changed only in the RY axis and BY axis directions.
There is a problem that correcting the skin color affects other colors. Further, there is a problem that it is extremely difficult to change the gain of the luminance signal, the gain of the aperture correction signal, and the frequency characteristic only in the flesh color region. Furthermore, when the subject is not sufficiently dressed without using a light or the like, the luminance of the human face is low, and wrinkles of the human face or the like are emphasized by camera signal processing such as γ correction. there were.

FIG. 3 is a block diagram of a conventional signal processing apparatus for a color video camera. In FIG.
21 is a focus lens, 22 is a solid-state image sensor, 23 is a CDS
Circuit, 24 is an automatic gain control circuit (AGC), 25 is an A / D converter, 26 is a signal processing circuit, 27 is a window generation circuit, 28 is a data select circuit, 29 is a bandpass filter (BPF), and 30 is an integration circuit , 31 is a microcomputer, 32 is a focus lens drive circuit, 33 is a motor,
34 is a luminance signal output terminal, 35 is an RY color difference signal output terminal,
36 is a BY color difference signal output terminal, 37 is a data select circuit, 38 is an integration circuit, 39 is an iris, 40 is a motor, 41 is an iris drive circuit, 42 is a timing generator (TG) for driving a solid-state imaging device, 43 is a solid-state imaging device drive circuit, 44 is a zoom lens, 45 is a motor, 46 is a zoom lens drive circuit, 47 is a data select circuit, and 48 is an integration circuit.

Next, the operation will be described. The solid-state imaging device 22 photoelectrically converts the optical image formed by the zoom lens 44 and the focus lens 21. The TG 42 outputs a solid-state image sensor read pulse and causes the solid-state image sensor 22 to output a video signal via the solid-state image sensor drive circuit 43. The video signal is extracted only by the signal component by the CDS circuit 23, gain-controlled by the AGC 24, and then subjected to signal processing such as color separation and matrix by the signal processing circuit 26 to obtain a luminance signal, an RY color difference signal, and a BY signal. A color difference signal is output.

The data select circuit 37 is a window generating circuit
Select the video signal in the image frame determined by 27. The video signal selected by the data select circuit 37 is integrated by the integrating circuit 38 every vertical scanning period. The iris drive circuit 41 controls the opening of the iris 39 via the motor 40 based on the output signal of the integration circuit 38.

The data select circuit 47 is a window generating circuit
Select the data in the image frame determined by 27. The video signal selected by the data select circuit 47 is integrated by the integration circuit 48 every field period. The gain of the AGC 24 is controlled so that the output signal level of the AGC 24 becomes constant by the output signal of the integration circuit 48. Further, the microcomputer 31 outputs a control signal to the timing generator 42 according to the output signal of the integration circuit 38, and controls the automatic electronic shutter speed.

The data select circuit 28 is a window generating circuit
Select the video signal in the image frame determined by 27. The video signal selected by the data select circuit 28 extracts a frequency component necessary for automatic focusing by a band-pass filter 29 and is integrated by an integration circuit 30 every one vertical scanning period. The output signal of the integration circuit 30 controls the focus lens drive circuit 32 via the microcomputer 31. The focus lens drive circuit 32 controls the focus lens 21 via a motor 33 according to a control signal of the microcomputer 31. The zoom lens drive circuit 46 controls the motor 45 to change the magnification of the subject.

Since the conventional video signal processing device is configured as described above, the main subject (person) cannot be accurately measured in the backlight, and the gradation of the low luminance portion of the video signal is lost. There is a problem that the phenomenon "is generated." In addition, there is a problem in that accurate photometry of a main subject (person) cannot be performed at the time of over-directed light, and a phenomenon of so-called “overexposure” occurs in which a high-luminance portion of a video signal is saturated. Also, in order to mainly set the center of the video signal area as the focus area,
If the main subject (person) is not at the center or is out of the focus area, there is a problem that focusing is not performed.
Furthermore, since the central part of the image area is mainly used as the photometry area, there is a problem that iris control, automatic gain control, and automatic electronic shutter speed adjustment appropriate for the main subject (person) cannot be performed.

FIG. 4 is a block diagram of a color video camera capable of photographing oneself by remote control, and FIG. 5 is a schematic diagram showing a state of photographing oneself. In FIG. 4, FIG.
Portions denoted by the same reference numerals indicate the same or corresponding portions.
In FIG. 4, reference numeral 49 denotes a remote controller, reference numeral 50 denotes a receiving circuit, and in FIG. 5, reference numeral 51 denotes a photographer who shoots and records himself / herself by remote control, reference numeral 52 denotes a video camera, and reference numeral 53 denotes a tripod for fixing the video camera 52. The remote controller 49 transmits signals for controlling a recording function such as a “recording signal” and a “recording stop signal”. In order to transmit the signal to the color video camera 52 by the remote controller 49, there is a method using a sound wave, a radio wave, light, or the like. Here, a case in which light such as infrared light is used will be described. The receiving circuit 50 receives the light emission pattern of the infrared signal transmitted from the remote control 49, and
To output the received signal. When the "recording signal" is received, a control signal for starting the recording of the video signal is output from the microcomputer 31, and when the "recording stop signal" is received, the control for stopping the recording of the video signal is performed. A signal is output from the microcomputer 31.

Since the conventional color video camera is configured as described above, when a photographer shoots and records the photographer himself by remote control, he or she must confirm it with a monitor such as a viewfinder of the video camera. There is a problem that the user cannot determine whether or not the user is in the image frame.
In addition, there is a problem that when a photographer himself is photographed and recorded by remote control, recording is continued even if the subject deviates from the angle of view of the video camera. Furthermore, when the photographer himself is being photographed and recorded by remote control, if the photographed image is not confirmed by the monitor, the face may be cut off from the image frame, and the photographer himself may be located in the center. There was a problem that could not be obtained.

By the way, conventionally, when a background image such as a predetermined landscape image is determined in advance, and a subject image captured by a color video camera is combined with the background image, an image combining device called a chroma key device has been used. In this chroma key apparatus, an image of a subject to be fitted is imaged in front of a background of a specific hue, and whether or not a video signal obtained by imaging is equal to the specific hue is compared. That is, a keying signal is generated to output only a video signal in the range of the subject image.

FIG. 6 shows a configuration of a conventional image synthesizing apparatus disclosed in, for example, "Electronic Electronics Course 8, Image Software", (August 30, 1980), Corona Corp., pp. 116-119. It is a block diagram. In FIG. 6, 54 is a lens, 55 is an image sensor, 56 is a process circuit, 57 is an encoder circuit, 58 is a synchronous circuit, 59 is a NOT circuit, 60 and 61 are gate circuits, 62 is a combining circuit, and 63 and 64 are buffers. Amplifiers, 65, 66
Is a differential amplifier, 67 and 68 are slice circuits, 69 is a reference RY
A color difference signal input terminal, 70 is a reference BY color difference signal input terminal,
71 and 72 are variable resistors, 73 and 74 are level conversion circuits, 75 is AN
This is a D circuit.

Next, the operation will be described. First, when a subject image to be fitted is captured in front of a background of a specific hue, a light image of the subject is formed on the image sensor 55 through the lens 54, and is converted into an electric signal according to the brightness of the light image and output. . The electric signal is processed by the process circuit 56 into a Y signal, an RY color difference signal, and a BY color difference signal. These signals are converted by the encoder circuit 57 into video image signals.

The RY color difference signal and the BY color difference signal are input to buffer amplifiers 63 and 64, are subjected to impedance conversion, and are compared with the reference level of the background color difference signal by the differential amplifiers 65 and 66. The signals are input to the slice circuits 67 and 68. In the slice circuits 67 and 68, the input signal is sliced at the slice level set by the variable resistors 71 and 72.
The setting of the specific hue of the background is based on the reference RY color difference signal input terminal.
69, which is performed at the reference BY color difference signal input terminal 70. Usually, a person is often selected as a subject, so that blue is set as a complementary color of flesh color for this specific hue. When each captured color difference signal is equal to the specific hue, the output of the slice circuits 67 and 68 hardly changes, and when different from the specific hue, the output of the slice circuits 67 and 68 greatly changes. In accordance with the outputs of the slice circuits 67 and 68, the level conversion circuits 73 and 74 generate a binary logical level output of either "0" or "1". FIG. 7 is a diagram showing the operation so far, in which the differential amplifier 65, the slice circuit 67, and the level conversion circuit on the AB line of the subject 77 on the screen 76 are shown.
73 shows an example of the output of 73. Then, the AND of the outputs of the two-level conversion circuits 73 and 74 is obtained by an AND circuit 75,
A keying signal is generated.

A background image signal is output from the synchronization circuit 58 to the gate circuit 61 in synchronization with the video signal. Gate circuit 60
Then, the range of the subject is extracted from the video signal from the encoder circuit 57 by the keying signal from the AND circuit 75 and output to the synthesizing circuit 62. On the other hand, in the gate circuit 61, the background range is extracted from the background image signal from the synchronization circuit 58 by the inverted signal of the keying signal from the NOT circuit 59, and is output to the synthesis circuit 62. The outputs of the gate circuits 60 and 61 are combined by the combining circuit 62, and a combined image is output.

Since the conventional image synthesizing apparatus is configured as described above, there are the following problems. In order to separate the subject from the background, it is necessary to select a color having a hue greatly different from the color of the subject as the background color. For example, when a person is used as a subject, a blue color, which is generally a complementary color of a flesh color, is selected as a background color, and a blue background called a blue background is required. In addition, the color of the subject placed in front of the background must be one that has a significantly different hue from the background color, and if blue is selected as the background color, a color such as purple or bluish green with a lot of blue components is used. Is difficult to separate from the background color, so that it cannot be used as the color of the subject, and there is a problem that the clothing of the subject is restricted.

Further, when the color temperature of the illumination changes, for example, when a plain curtain is selected for the background, the luminance of the background changes due to the luminance change caused by the curtain folds, the background is placed in front of the background. There is a problem that the separation from the subject becomes unstable. Also, it is not always possible to prepare a reference blue screen as a background. For example, in an ordinary household, it is conceivable to take a picture with a non-blue wall as a background. In this case, the color of the wall must be set as the background color, but when changing the background color, the reference level and slice level must be adjusted, and the reference background color variation or camera There is a problem that individual adjustment is required for the characteristic variation.

Also, it is difficult to prepare a background of uniform luminance and hue in a general household. For example, when a background color is set with a wall, a curtain or the like as a background, the luminance and the hue are caused by dirt or wrinkles. Since the hue varies, there is a problem that adjustment becomes difficult and separation between the background and a subject placed in front thereof becomes unstable. Further, the image synthesizing device generally includes a camera for generating a keying signal and an external camera or a video tape recorder (VT) for obtaining a background image.
R) is required, and it is necessary to synchronize them, resulting in a problem that the device configuration becomes bulky.

An object of the present invention is to provide a video signal processing device capable of detecting only a specific color area (skin color area) with a simple circuit configuration. Another object of the present invention is to use a simple circuit configuration to set a skin color area or a human face so that it can be used to set an autofocus area or a photometric area such as iris control, automatic gain control, and automatic shutter speed adjustment. An object of the present invention is to provide a video signal processing device capable of detecting only an area.

Still another object of the present invention is to provide a video signal processing apparatus capable of performing color correction only on a skin color area or a face area without affecting other colors. Still another object of the present invention is to provide a video signal processing apparatus capable of changing the gain of a luminance signal, the gain of an aperture correction signal, and the frequency characteristic of an aperture correction signal only in a skin color area or a face area. is there. Still another object of the present invention is to prevent an erroneous recording in which a photographer himself is out of the angle of view of a video camera when photographing and recording the photographer himself, and the main subject is positioned at the center. Another object of the present invention is to provide a color video camera capable of obtaining good images. Still another object of the present invention is to provide a color video camera capable of accurately separating a subject area and a background area from a video signal with a simple circuit configuration.

[0025]

According to a first aspect of the present invention, there is provided a video signal processing apparatus comprising: a focus lens for focusing a subject; a focus area setting unit for setting a focus area for focusing the subject; Focusing area control means for controlling a focus lens so as to focus the obtained video signal in a focus area, and skin color detection means for detecting a skin color area of a subject in the obtained video signal. Are configured so that the skin color area detected by the skin color detecting means is set as the focus area.

In the video signal processing apparatus according to the first aspect of the present invention,
The skin color area detected by the skin color detecting means is set as a focus area.

According to a second aspect of the present invention, there is provided a video signal processing device for setting a photometric region for measuring the amount of incident light, and a level of the obtained video signal in the photometric region. An iris for adjusting the amount of incident light, and a flesh color detecting means for detecting a flesh color area of the subject in the obtained video signal, wherein the photometric area setting means sets the flesh color area detected by the flesh color detecting means as a photometric area. It is configured to be.

According to a third aspect of the present invention, there is provided a video signal processing apparatus, wherein a photometric area setting means for setting a photometric area for controlling the level of the obtained video signal to be constant, and the level of the obtained video signal being fixed. An automatic gain control circuit that controls the gain of the video signal, and a skin color detection unit that detects a skin color region of the subject in the obtained video signal. The detected skin color area is configured to be a photometric area.

According to a fourth aspect of the present invention, there is provided a video signal processing apparatus, comprising: a photometric area setting means for setting a photometric area for measuring the amount of incident light; and a shutter speed so as to keep the level of the obtained video signal constant. Automatic shutter speed adjusting means capable of changing the color and a flesh color detecting means for detecting a flesh color area of the subject in the obtained video signal, wherein the photometric area setting means comprises a flesh color area detected by the flesh color detecting means. Is set as a photometry area.

In the video signal processing apparatus according to the second, third and fourth aspects of the present invention, the flesh color area detected by the flesh color detecting means is set as a photometric area.

According to a fifth aspect of the present invention, there is provided a video signal processing apparatus comprising: a focus lens for focusing a subject; a focus area setting means for setting a focus area for focusing the subject; Focus control means for controlling the focus lens so as to focus on the area, skin color detection means for detecting the skin color area of the subject in the obtained video signal, and changing the range of the skin color area detected by the skin color detection means The focus area setting means is configured to set a range in which the skin color area detected by the skin color detecting means is increased by a predetermined value by the variable means as a focus area.

In the video signal processing device according to the fifth aspect of the present invention,
A range in which the flesh color area detected by the flesh color detecting means is increased by a predetermined value by the variable means is set as a focus area.

A video signal processing device according to a sixth aspect of the present invention is a video signal processing device, comprising: a photometric region setting means for setting a photometric region for measuring the amount of incident light; and a method for making the level of the obtained video signal constant in the photometric region. An iris for adjusting the amount of incident light, skin color detecting means for detecting a skin color area of a subject in the obtained video signal, and variable means for changing a range of the skin color area detected by the skin color detecting means. The photometric area setting means is configured to set a range in which the skin color area detected by the skin color detecting means is reduced by a predetermined value by the variable means as a photometric area.

According to a seventh aspect of the present invention, there is provided a video signal processing apparatus, wherein a photometric area setting means for setting a photometric area for controlling the level of the obtained video signal to be constant, and the level of the obtained video signal being fixed. An automatic gain control circuit that controls the gain of the video signal, a skin color detection unit that detects the skin color region of the subject in the obtained video signal, and changes the range of the skin color region detected by the skin color detection unit And a photometric region setting unit configured to set a range in which the skin color region detected by the skin color detecting unit is reduced by a predetermined value by the variable unit as a photometric region.

According to another aspect of the present invention, there is provided a video signal processing apparatus, comprising: a photometric area setting means for setting a photometric area for measuring the amount of incident light; and a shutter speed so as to keep the level of the obtained video signal constant. Electronic shutter speed adjusting means that can change the skin color area, a skin color detecting means that detects the skin color area of the subject in the obtained video signal, and a variable means that can change the range of the skin color area detected by the skin color detecting means The photometric area setting means is configured to set a range in which the skin color area detected by the skin color detecting means is reduced by a predetermined value by the variable means as a photometric area.

In the video signal processing apparatus according to the sixth, seventh and eighth aspects, the range in which the flesh color area detected by the flesh color detecting means is reduced by a predetermined value by the variable means is set as the photometric area.

A video signal processing apparatus according to a ninth aspect of the present invention is a video signal processing apparatus comprising: a zoom lens for changing the magnification of a subject; a focus lens for focusing the subject; and a focus area setting for setting a focus area for focusing the subject. Means, focus control means for controlling a focus lens so as to focus the obtained video signal in a focus area, skin color detection means for detecting a skin color area of a subject in the obtained video signal, and skin color detection means Variable means capable of changing the range of the flesh-color area detected by the means, and the focus area setting means sets a range in which the flesh-color area detected by the flesh color detecting means is increased by a predetermined value by the variable means as a focus area. The predetermined value is changed according to the distance to the subject and the magnification.

According to a ninth aspect of the present invention, in the video signal processing apparatus, a range in which the flesh color area detected by the flesh color detecting means is increased by a predetermined value by the variable means is set as a focus area, and the predetermined value is set to the distance to the subject. And the magnification.

According to a tenth aspect of the present invention, there is provided a video signal processing apparatus comprising: a zoom lens for changing a magnification of a subject; a focus lens for focusing the subject; and a photometric area setting for setting a photometric area for measuring an incident light amount. Means, an iris for adjusting the amount of incident light so as to keep the level of the obtained video signal in the photometry area constant, a skin color detection means for detecting a skin color area of the subject in the obtained video signal, and a skin color detection means Variable means capable of changing the range of the flesh color area detected by the photometric area setting means,
A range in which the flesh color area detected by the flesh color detecting means is reduced by a predetermined value by the variable means is defined as a photometric area, and the predetermined value is changed depending on the distance to the subject and the magnification.

An image signal processing apparatus according to an eleventh aspect of the present invention includes a zoom lens for changing the magnification of the subject, a focus lens for focusing the subject, and photometry for controlling the level of the obtained video signal to be constant. Photometric area setting means for setting an area, an automatic gain control circuit for controlling the gain of the video signal so as to keep the level of the obtained video signal constant, and detecting a skin color area of the subject in the obtained video signal And a variable means capable of changing the range of the skin color region detected by the skin color detecting means,
The photometric area setting means is configured to set a range in which the flesh color area detected by the flesh color detecting means is reduced by a predetermined value by the variable means as a photometric area, and to change the predetermined value according to the distance to the subject and the magnification.

According to a twelfth aspect of the present invention, there is provided a video signal processing apparatus comprising: a zoom lens for changing a magnification of a subject; a focus lens for focusing the subject; and a photometry area setting for setting a photometry area for measuring an incident light amount. Means, automatic electronic shutter speed adjusting means capable of changing a shutter speed so as to keep the level of the obtained video signal constant, and skin color detecting means for detecting a skin color area of a subject in the obtained video signal. Variable means capable of changing the range of the flesh color area detected by the flesh color detecting means, wherein the photometric area setting means reduces the flesh color area detected by the flesh color detecting means by a predetermined value by the variable means. Is a photometry area, and the predetermined value is changed according to the distance to the subject and the magnification.

In the video signal processing apparatus according to the present invention, a range in which the flesh color area detected by the flesh color detecting means is reduced by a predetermined value by the variable means is set as a photometric area, and the predetermined value is set as the photometric area. It changes depending on the distance to the subject and the magnification.

According to a thirteenth aspect of the present invention, there is provided a video signal processing apparatus comprising: a zoom lens for changing a magnification of a subject; a focus lens for focusing the subject; and a focus area setting for setting a focus area for focusing the subject. Means, focus control means for controlling a focus lens so as to focus the obtained video signal in a focus area, skin color detection means for detecting a skin color area of a subject in the obtained video signal, and skin color detection means Variable means capable of changing the range of the flesh-color area detected by the means. The range increased by the value is set as the focus area, and the distance to the subject is longer than a predetermined distance. Itoki, and magnification are configured to switch to a small area of focus area by a predetermined value amount than the skin color region is larger than a predetermined value.

According to a thirteenth aspect of the present invention, in the video signal processing apparatus, the range in which the flesh color area detected by the flesh color detecting means is increased by a predetermined value in proportion to the distance to the subject and the magnification by the variable means is set as the focus area. Set,
When the distance to the subject is shorter than a predetermined distance and when the enlargement magnification is larger than a predetermined value, the focus area is switched to an area smaller than the skin color area by a predetermined value.

According to a fourteenth aspect of the present invention, there is provided a video signal processing apparatus comprising: a zoom lens for changing a magnification of a subject, a focus lens for focusing the subject, and a photometry area setting for setting a photometry area for measuring an incident light amount. Means, an iris for adjusting the amount of incident light so as to keep the level of the obtained video signal in the photometry area constant, a skin color detection means for detecting a skin color area of the subject in the obtained video signal, and a skin color detection means Variable means capable of changing the range of the flesh color area detected by the photometric area setting means,
When the range obtained by reducing the skin color area detected by the skin color detection means by a predetermined value in proportion to the distance to the subject and the enlargement magnification by the variable means is a photometric area, and when the distance to the subject is longer than a predetermined distance, When the magnification is smaller than a predetermined value, the focus area is switched to an area larger than the skin color area by a predetermined value.

According to a fifteenth aspect of the present invention, there is provided a video signal processing apparatus comprising: a zoom lens for changing a magnification of an object, a focus lens for focusing the object, and photometry for controlling the level of the obtained image signal to be constant. Photometric area setting means for setting an area, an automatic gain control circuit for controlling the gain of the video signal so as to keep the level of the obtained video signal constant, and detecting a skin color area of the subject in the obtained video signal And a variable means capable of changing the range of the skin color region detected by the skin color detecting means,
The photometric area setting means sets, as a photometric area, a range in which the skin color area detected by the skin color detecting means is reduced by a predetermined value in proportion to the distance to the subject and the magnification by the variable means, and the distance to the subject is predetermined. When the distance is larger than the distance and when the magnification is smaller than a predetermined value, the focus area is switched to an area larger by a predetermined value than the skin color area.

A video signal processing apparatus according to a sixteenth aspect of the present invention is a video signal processing apparatus, comprising: a zoom lens for changing the magnification of a subject, a focus lens for focusing the subject, and a photometric area setting for setting a photometric area for measuring the amount of incident light. Means, automatic electronic shutter speed adjusting means capable of changing a shutter speed so as to keep the level of the obtained video signal constant, and skin color detecting means for detecting a skin color area of a subject in the obtained video signal. Variable means capable of changing the range of the flesh-color area detected by the flesh-color detecting means, and the focus area setting means sets the flesh-color area detected by the flesh-color detecting means to the distance to the subject and the enlargement magnification by the varying means. When the distance to the subject is longer than a predetermined distance, the range reduced by a predetermined value relative to And magnification are configured to switch to a predetermined value amount corresponding larger area than the skin color region photometry area is smaller than a predetermined value.

According to the video signal processing apparatus of the present invention, the range in which the flesh-color area detected by the flesh-color detecting means is reduced by a predetermined value in proportion to the distance to the subject and the magnification by the variable means. Is set as a photometric area, and when the distance to the subject is longer than a predetermined distance and when the enlargement magnification is smaller than a predetermined value, the photometric area is switched to an area larger by a predetermined value than the skin color area.

According to a seventeenth aspect of the present invention, there is provided a video signal processing apparatus, wherein a photographing means for changing the magnification of a subject by a zoom lens and focusing and photographing the subject by a focus lens detects a skin color region of the subject from the video signal. A skin color detection circuit is provided, and a horizontal range predetermined by the distance to the subject and the zoom position, and a skin color region in which a correlation between signals in the horizontal range of the skin color region is equal to or more than a predetermined value, It is configured to detect as a human face.

According to a seventeenth aspect of the present invention, in the video signal processing apparatus, the correlation between the horizontal range predetermined by the distance to the subject and the zoom position and the signal within the horizontal range of the flesh color region is determined. A skin color area that is equal to or larger than the value is detected as a human face.

In a video signal processing apparatus according to an eighteenth aspect of the present invention, a photographing means for changing the magnification of a subject by a zoom lens and focusing and photographing the subject by a focus lens detects a skin color region of the subject from the video signal. A skin color detection circuit is provided, and a vertical range predetermined by the distance to the subject and the zoom position, and a skin color region in which a correlation between signals in the vertical range of the skin color region is equal to or more than a predetermined value, It is configured to detect as a human face.

In the video signal processing apparatus according to the eighteenth aspect, the correlation between the vertical range predetermined by the distance to the subject and the zoom position and the signal within the vertical range of the flesh color region is determined. A skin color area that is equal to or larger than the value is detected as a human face.

According to a nineteenth aspect of the present invention, in a photographing means for changing a magnification of a subject by a zoom lens and focusing and photographing the subject by a focus lens, a flesh color region of the subject is detected from the video signal. A skin color detection circuit is provided, and a skin color region in which a correlation between a range predetermined by a distance to a subject and a zoom position and a signal in the range of the skin color region is equal to or more than a predetermined value is detected as a human face. It is configured as follows.

According to a nineteenth aspect of the present invention, in the video signal processing apparatus, a skin color area in which a correlation between a range defined by a distance to a subject and a zoom position and a signal within the skin color area is equal to or more than a predetermined value is determined. It is detected as a human face.

According to a twentieth aspect of the present invention, there is provided an image signal processing apparatus, wherein a skin color area of an object is detected from the image signal in an image pickup means for changing the magnification of the object by a zoom lens, focusing the object by a focus lens and photographing the object. It has a skin color detection circuit, a coefficient determined by the distance to the subject and the zoom position, and the length required for human face detection,
The range and the figure are changed, and a human face is detected from the signal within the range of the skin color region and the variable signal.

According to a twentieth aspect of the present invention, there is provided a video signal processing apparatus for recognizing a human face by a length, a range, and a figure necessary for detecting a human face changed by a coefficient determined by a distance to a subject and a zoom position. To detect.

A video signal processing apparatus according to a twenty-first aspect of the present invention is a video signal processing apparatus for an image pickup apparatus, which changes the magnification of an object by a zoom lens and focuses and shoots the object by a focus lens. A skin color detecting means for detecting a skin color area of the subject, and if the size of the skin color area falls within a range of a size predetermined by the distance to the subject and the zoom position, the skin color area is set to a human Is configured to be detected as the face.

According to a twenty-first aspect of the present invention, when the size of the skin color area falls within the range of the size predetermined by the distance to the subject and the zoom position, the image of the human face is detected. Detect as there is.

A video signal processing apparatus according to a twenty-second aspect of the present invention is a video signal processing apparatus for an image pickup apparatus which changes the magnification of an object by a zoom lens and focuses and shoots the object by a focus lens. A skin color detection unit that detects a skin color area of the subject is provided, and when the horizontal length of the skin color area falls within a range of a size predetermined by a distance to the subject and a zoom position, It is configured to detect a skin color area as a human face.

A video signal processing apparatus according to the present invention is characterized in that when the size of the skin color area falls within a predetermined range in the horizontal direction according to the distance to the subject and the zoom position, Is detected as the face.

A video signal processing apparatus according to a twenty-third aspect of the present invention is a video signal processing apparatus of an imaging apparatus for changing the magnification of an object by a zoom lens and focusing and shooting the object by a focus lens. A skin color detecting means for detecting a skin color region of the subject is provided, and the horizontal and vertical sizes of the skin color region are included in a range of a size predetermined by a distance to the subject and a zoom position. In such a case, it is configured to detect the skin color area as a human face.

A video signal processing apparatus according to the twenty-third aspect of the present invention provides a video signal processing apparatus in which the size of a skin color area falls within a predetermined range of a two-dimensional area based on a distance to a subject and a zoom position. It is detected as a human face.

A video signal processing apparatus according to a twenty-fourth aspect of the present invention is a video signal processing apparatus for an image pickup apparatus in which the magnification of an object is changed by a zoom lens and the object is focused by a focus lens for photographing. A skin color detecting means for detecting a skin color area of the subject is provided, and in an area of a size predetermined by the distance to the subject and the zoom position, the size of the skin color area is determined by the distance to the subject and the zoom position. When the size is within a predetermined size range, the skin color area is detected as a human face.

In a video signal processing apparatus according to a twenty-fourth aspect of the present invention, the size of the flesh-colored area is determined in advance by the distance to the subject and the zoom position in an image frame predetermined by the distance to the subject and the zoom position. When the size is within the predetermined size range, it is detected as a human face.

A video signal processing apparatus according to a twenty-fifth aspect of the present invention is a video signal processing apparatus for an image pickup apparatus in which the magnification of an object is changed by a zoom lens, and the object is focused by a focus lens for photographing. A skin color detection circuit for detecting a skin color area of the subject, wherein the size of the skin color area is within a range of a size predetermined by a distance to the subject and a zoom position, and a skin color having a high correlation with the range; The region is configured to be detected as a human face.

According to the video signal processing apparatus of the twenty-fifth aspect, the size of the flesh-colored area is within a range predetermined by the distance to the subject and the zoom position, and has a high correlation with this range. The skin color area is detected as a human face.

According to a twenty-sixth aspect of the present invention, there is provided a video signal processing apparatus comprising: a zoom lens for changing the magnification of an object, a focus lens for focusing the object, and a gain control circuit for adjusting the gain of a color difference signal. A skin color detecting unit that detects a skin color region in the video signal; and a determining unit that determines a human face in the video signal based on the skin color region obtained from the skin color detecting unit. The human face is determined by the determining unit. In this case, the gain of the color difference signal is changed only in the human face region.

According to a twenty-sixth aspect of the present invention, a flesh color detecting means detects a flesh color area in a video signal, and a discriminating means for discriminating a human face in the video signal discriminates a human face. When the human face is determined by the means, the gain of the color difference signal is changed only in the human face area.

A video signal processing apparatus according to a twenty-seventh aspect of the present invention includes a zoom lens for changing the magnification of an object, a focus lens for focusing the object, and a gain control circuit for adjusting the gain of a luminance signal. A skin color detecting unit that detects a skin color region in the video signal; and a determining unit that determines a human face in the video signal based on the skin color region obtained from the skin color detecting unit. The human face is determined by the determining unit. In this case, the gain of the luminance signal is increased only in the area of the human face.

In a video signal processing apparatus according to a twenty-seventh aspect of the present invention, a flesh color area in a video signal is detected by a flesh color detecting means, and a human face is determined by a determining means for determining a human face in the video signal. When the human face is determined by the means, the gain of the luminance signal is increased only in the human face area.

A video signal processing apparatus according to a twenty-eighth aspect of the present invention provides a zoom lens for changing the magnification of an object, a focus lens for focusing an object, and a gain control circuit for adjusting the gain of an aperture correction signal. Skin color detection means for detecting a skin color area in the video signal, and discrimination means for discriminating a human face in the video signal based on the skin color area obtained from the skin color detection means. In this case, the gain of the aperture correction signal is changed only in the area of the human face.

In a video signal processing apparatus according to a twenty-eighth aspect of the present invention, a flesh color area in a video signal is detected by a flesh color detecting means, and a human face is determined by a determining means for determining a human face in the video signal. When the human face is determined by the means, the gain of the aperture correction signal is changed only for the human face area.

A video signal processing apparatus according to a twenty-ninth aspect of the present invention provides a video signal processing apparatus comprising: a zoom lens for changing the magnification of a subject; a focus lens for focusing the subject; and a plurality of bandpass filters for changing the frequency characteristics of the aperture correction signal. A skin color detection unit that detects a skin color region in the obtained video signal, and a determination unit that determines a human face in the video signal based on the skin color region obtained from the skin color detection unit. When the determination is made, the frequency characteristic of the aperture correction signal is changed only in the human face region.

In a video signal processing apparatus according to a twenty-ninth aspect of the present invention, the flesh color area is detected in the video signal by the flesh color detecting means, and the human face is determined by the determining means for determining the human face in the video signal. When the human face is determined by the means, the frequency characteristic of the aperture correction signal is changed only in the human face area.

A video signal processing apparatus according to a thirtieth aspect of the present invention is a video signal processing apparatus for an image pickup apparatus, which changes the magnification of a subject by a zoom lens and focuses and shoots the subject by a focus lens. A focus control unit that controls a focus lens so as to automatically focus the subject, discriminates a human face from a skin color area, and moves a detection area for automatic focusing according to a result of the discrimination. It is configured.

A video signal processing apparatus according to a thirtieth aspect of the present invention, when the size of a skin color area falls within a range of a size predetermined by the distance to the subject and the zoom position, The detection area is detected as a human face, and the detection area of the autofocus control is moved according to the detection result.

A video signal processing apparatus according to a thirty-first aspect of the present invention is a video signal processing apparatus for an image pickup apparatus in which the magnification of an object is changed by a zoom lens and the object is focused by a focus lens for photographing. An iris that adjusts the amount of incident light and an iris control unit that controls the opening of the iris so as to be constant are provided, a human face is determined from the skin color region, and an iris control is performed according to the determination result. It is configured to change the photometry area.

In the video signal processing apparatus according to the thirty-first aspect, when the size of a skin color area falls within a range of a size predetermined by a distance to a subject and a zoom position, the skin color area is The face is detected as a human face, and the photometric area for iris control is moved according to the detection result.

A video signal processing apparatus according to a thirty-second aspect of the present invention is a video signal processing apparatus for an image pickup apparatus in which the magnification of an object is changed by a zoom lens, and the object is focused by a focus lens for photographing. The automatic gain control means is provided to make the constant, and the human face is determined from the skin color area, and the photometric area for the automatic gain control is changed according to the determination result.

In the video signal processing apparatus according to the invention, when the size of the skin color area falls within a range of a size predetermined by the distance to the subject and the zoom position, the skin color area is determined. The face is detected as a human face, and the photometric area for automatic gain control is moved according to the detection result.

A video signal processing apparatus according to a thirty-third aspect of the present invention is a video signal processing apparatus for an image pickup apparatus, which changes the magnification of a subject by a zoom lens and focuses and shoots the subject by a focus lens. Automatic electronic shutter speed adjusting means for changing the shutter speed so that is constant, discriminates a human face from the skin color area, and changes the photometric area of the automatic electronic shutter speed adjusting means according to the result of this judgment. It is configured.

A video signal processing apparatus according to a thirty-third aspect of the present invention, when the size of a skin color area falls within a range of a size determined in advance by the distance to the subject and the zoom position, The face is detected as a human face, and the photometric area for automatic electronic shutter speed adjustment is changed according to the detection result.

A video signal processing apparatus according to a thirty-fourth aspect of the present invention is a video signal processing apparatus for an image pickup apparatus, which changes the magnification of an object by a zoom lens, focuses the object by a focus lens, and shoots the image. Focusing control means for controlling the focus lens so as to automatically focus the subject is provided, the human face is determined from the skin color area, the result of the determination is output to a low-pass filter, and a predetermined threshold value in the low-pass filter output signal is used. It is configured such that a small range is set as a detection area of the auto focus control.

The video signal processing apparatus according to the thirty-fourth aspect of the present invention, when the size of the skin color area falls within the range of the size predetermined by the distance to the subject and the zoom position, It is detected as a human face, the detection result is passed through a low-pass filter, and a range smaller than a predetermined threshold in the low-pass filter output signal is set as a detection area of the auto-focus control.

A video signal processing apparatus according to a thirty-fifth aspect of the present invention is a video signal processing apparatus for an image pickup apparatus, which changes the magnification of an object by a zoom lens, focuses the object by a focus lens, and shoots the image. Equipped with an iris that adjusts the amount of light incident on the solid-state imaging device and an iris control unit that automatically controls the iris so as to make it constant, discriminates a human face from a skin color area, and outputs the discrimination result to a low-pass filter. The iris photometry area is defined as a range larger than a predetermined threshold in the low-pass filter output signal.

In the video signal processing apparatus according to the invention, when the size of the skin color area falls within a range of a size predetermined by the distance to the subject and the zoom position, the skin color area is determined. It is detected as a human face, and the detection result is passed through a low-pass filter, and a range larger than a predetermined threshold value in the low-pass filter output signal is defined as an iris photometry area.

A video signal processing apparatus according to a thirty-sixth aspect of the present invention is a video signal processing apparatus for an image pickup apparatus, in which the magnification of an object is changed by a zoom lens and the object is focused by a focus lens for photographing. Automatic gain control means to make the constant, discriminate the human face from the skin color region, output this discrimination result to a low-pass filter,
A range larger than a predetermined threshold in the low-pass filter output signal is configured to be a photometric area for automatic gain control.

The video signal processing apparatus according to the invention of claim 36, when the size of the skin color area falls within the range of the size predetermined by the distance to the subject and the zoom position, It is detected as a human face, and the detection result is passed through a low-pass filter, and a range larger than a predetermined threshold in the output signal of the low-pass filter is set as a photometric area for automatic gain control.

A video signal processing apparatus according to a thirty-seventh aspect of the present invention is a video signal processing apparatus for an image pickup apparatus in which the magnification of an object is changed by a zoom lens, and the object is focused by a focus lens for photographing. Automatic shutter speed adjustment means for changing the shutter speed so that the image speed becomes constant, discriminates a human face from the skin color area, outputs the result of the discrimination to a low-pass filter, and is larger than a predetermined threshold value in the low-pass filter output signal. The range is set as the photometric area of the automatic electronic shutter speed adjusting means.

The video signal processing apparatus according to the present invention, when the size of the skin color area falls within the range of the size predetermined by the distance to the subject and the zoom position, It is detected as a human face, and the detection result is passed through a low-pass filter, and a range larger than a predetermined threshold in the low-pass filter output signal is set as a photometric area for automatic electronic shutter speed adjustment.

A video signal processing apparatus according to a thirty-eighth aspect of the present invention is a video signal processing apparatus for an image pickup apparatus, which changes the magnification of an object by a zoom lens, focuses the object by a focus lens, and shoots the image. A focus control means for controlling a focus lens to automatically focus a subject is provided, and a human face is determined from a skin color area, and a range obtained by adding a certain value to the determination result is defined as a detection area of the auto focus control. It is configured to be.

The video signal processing apparatus according to the thirty-eighth aspect of the present invention, when the size of the skin color area falls within the range of the size determined in advance by the distance to the subject and the zoom position, A range in which a human face is detected as being detected and a certain value is added to the detection result is set as a detection area for autofocus control.

A video signal processing apparatus according to a thirty-ninth aspect of the present invention is a video signal processing apparatus for an image pickup apparatus in which the magnification of an object is changed by a zoom lens and the object is focused by a focus lens for photographing. An iris for adjusting the amount of incident light and an iris control means for automatically controlling the iris so as to be constant, discriminate a human face from the skin color region, and subtract a constant value from the discrimination result to determine a range of the iris It is configured to be a photometric area.

In the video signal processing apparatus according to the thirty-ninth aspect, when the size of the flesh-colored area falls within a range of a size predetermined by the distance to the subject and the zoom position, the flesh-colored area is determined. It is detected as a human face, and a range obtained by subtracting a certain value from the detection result is defined as a photometric area for iris control.

A video signal processing apparatus according to a forty-fourth aspect of the present invention is a video signal processing apparatus for an image pickup apparatus, wherein the magnification of an object is changed by a zoom lens, and the object is focused by a focus lens for photographing. Is set, and a human face is discriminated from the skin color region, and a range obtained by subtracting a certain value from the discrimination result is set as a photometry area of the automatic gain control.

The video signal processing apparatus according to the forty-ninth aspect of the present invention, when the size of the flesh-colored area falls within the range of the size predetermined by the distance to the subject and the zoom position, It is detected as a human face, and a range obtained by subtracting a certain value from the detection result is defined as a photometric area for automatic gain control.

A video signal processing apparatus according to a forty-first aspect of the present invention is a video signal processing apparatus for an image pickup apparatus, wherein the magnification of an object is changed by a zoom lens, and the object is focused by a focus lens for photographing. Automatic shutter speed adjusting means for changing the shutter speed so that the image speed becomes constant. A human face is discriminated from the skin color area, and a range obtained by subtracting a certain value from the discrimination result is measured by the automatic electronic shutter speed adjusting means. It is configured to be an area.

The image signal processing apparatus according to the forty-first aspect of the present invention, when the size of the skin color area falls within a range of a size predetermined by the distance to the subject and the zoom position, A range in which a human face is detected and a certain value is subtracted from the detection result is set as a photometric area for automatic electronic shutter speed adjustment.

A color video camera according to claim 42 is a zoom lens for changing an image magnification, a focus lens for focusing an object, a remote controller, a receiving circuit for receiving a signal from the remote controller, A skin color detection unit for detecting a skin color region in the obtained video signal, and a determination unit for determining a human face based on the skin color region obtained from the skin color detection unit. If the discriminating means does not detect a human face in the video signal obtained by shooting when the video recording is started or performed, the video signal obtained by the shooting is not started to be recorded, or the video is not recorded. Is configured to stop.

A color video camera according to the invention of claim 42 is characterized in that, when recording of a photographed video signal is started by remote control or when recording is being performed, discrimination means is included in the video signal obtained by photographing. If no human face is detected, the recording of the video signal obtained by shooting is not started or the recording is stopped.

A color video camera according to a forty-third aspect of the present invention includes a zoom lens for changing an image magnification, a focus lens for focusing a subject, a remote controller, a receiving circuit for receiving a signal emitted from the remote controller, A skin color detection unit for detecting a skin color region in the obtained video signal, and a determination unit for determining a human face based on the skin color region obtained from the skin color detection unit. When recording is started or when recording is being performed, if a human face is not detected by the determination means in a video signal obtained by photographing, the photographer is notified of erroneous recording.

The color video camera according to claim 43 is
If recording of a captured video signal is started or performed by remote control, if the human face is not detected by the discriminating means in the video signal obtained by photography, the photographer may mistakenly record. To inform.

A color video camera according to a forty-fourth aspect of the present invention comprises a zoom lens for changing an image magnification, a focus lens for focusing on a subject, a remote controller, a receiving circuit for receiving a signal from the remote controller, A control signal generation circuit for generating a detection signal such as a VISS signal, a device for recording a detection signal on a tape for recording a video signal, a skin color detection unit for detecting a skin color region in the obtained video signal, and a skin color detection unit Discriminating means for discriminating a person's face from the skin color region obtained from the camera. When recording is started by remote control or when recording is being performed, the discriminating means is used by the discriminating means in a video signal obtained by shooting. When no face is detected, or when no human face is detected, the detection signal output from the control signal generation circuit is recorded on the tape. It is configured.

The color video camera according to claim 44 is
A control signal when a person's face is not detected by the discriminating means in a video signal obtained by shooting when recording is started or recording is performed by remote control, or when a human face is not detected anymore. The detection signal output from the generation circuit is recorded on a tape.

A color video camera according to a forty-fifth aspect of the present invention comprises a zoom lens for changing an image magnification, a focus lens for focusing an object, a zoom lens for changing an image magnification, a focus lens for focusing an object, An operating device, a receiving circuit for receiving a signal emitted from the remote operating device, a window generating circuit for generating a window pulse that changes according to the distance to the subject and a magnification, and a flesh color for detecting a flesh color region in the obtained video signal A detecting means, and a determining means for determining a human face based on the skin color region obtained from the skin color detecting means, and determined by the window generating circuit when recording is started or performed by remote control. If a human face is not detected by the discriminating means in the video signal in the image frame, recording of the video signal obtained by shooting is started. It is configured so as to not or stop recording.

A color video camera according to a forty-fifth aspect of the present invention
If a human face is not detected by the discriminating means in a video signal in an image frame defined by the window generation circuit when recording is started or recording is performed by remote control, an image obtained by shooting. Do not start or stop recording the signal.

The color video camera according to the forty-sixth aspect comprises a zoom lens for changing the image magnification, a focus lens for focusing the subject, a zoom lens for changing the image magnification, a focus lens for focusing the subject, and a remote control. An operating device, a receiving circuit for receiving a signal emitted from the remote operating device, a window generating circuit for generating a window pulse that changes according to the distance to the subject and a magnification, and a flesh color for detecting a flesh color region in the obtained video signal A detecting means, and a determining means for determining a human face based on the skin color region obtained from the skin color detecting means, and determined by the window generating circuit when recording is started or performed by remote control. If the human face is not detected by the discriminating means in the video signal in the image frame, the photographer is notified of the erroneous recording. To have.

The color video camera according to claim 46 is
When recording is started or recorded by remote control, if a human face is not detected by the discriminating means in the video signal within the image frame defined by the window generating circuit, the photographer may be mistakenly recorded. Inform.

The color video camera according to the forty-seventh aspect of the present invention comprises a zoom lens for changing an image magnification, a focus lens for focusing an object, a zoom lens for changing an image magnification, a focus lens for focusing an object, An operating device, a receiving circuit for receiving a signal emitted from the remote operating device, a window generating circuit for generating a window pulse that changes according to the distance to the subject and the magnification, and a VIS
A control signal generating circuit for generating a detection signal such as an S signal, a device for recording a detection signal on a tape for recording a video signal, a flesh color detecting means for detecting a flesh color region in the obtained video signal, and a flesh color detection Discriminating means for discriminating a human face based on a skin color region obtained from the means, and when recording is started by remote control or when recording is being performed, a video signal in an image frame determined by a window generating circuit. The detection signal output from the control signal generation circuit is recorded on the tape when the human face is not detected by the discriminating means or when the human face is no longer detected.

[0110] The color video camera according to claim 47 is
When recording is started by remote control or when recording is being performed, when a human face is not detected by the determination means in a video signal in an image frame defined by the window generation circuit, or when a human face is detected. The detection signal output from the control signal generation circuit when the signal runs out is recorded on a tape.

[0111]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings showing the embodiments.

(Embodiment 1) FIG. 8 is a diagram showing an example of skin color area detection in Embodiment 1. As shown in FIG. 8, a closed region (hatched portion in the drawing) on a two-dimensional plane of the RY and BY axes of the color difference signal of the video signal is detected as a skin color region. The skin color area detected in this manner changes according to the level of the luminance signal. In other words, when the level of the luminance signal increases, the position and size of the skin color area are changed from (a) to (b) to (c) as shown in FIG. 9 to detect a more accurate skin color area. Can be.

(Embodiment 2) FIG. 10 is a block diagram showing a configuration of a skin color detection circuit 101 for detecting a skin color area in Embodiment 2. The skin color detection circuit 101 is a circuit that receives a digital luminance signal, a BY color difference signal, and an RY color difference signal and detects a skin color region from a video signal. The skin color detection circuit 101 is connected to an RY color difference signal input terminal 102 and a B-
It comprises a Y color difference signal input terminal 103, a luminance signal input terminal 104, a memory 105, a comparator 106, and a skin color detection signal output terminal 107. As shown in FIG. 11, the skin color region is a region limited by the hue and the color signal saturation, and is represented by Expressions 1 and 2. Further, the skin color area represented by Expressions 1 and 2 changes according to the level of the luminance signal as represented by Expressions 3 and 4,
As the level of the luminance signal increases, the skin color area
2, the color signal saturation increases as shown in FIGS. As described above, the skin color region can be accurately detected by changing the skin color region from FIG. 12 to FIG. 13 to FIG. 14 according to the level of the luminance signal.

(Equation 1) (B−Y) · tan (θ + β) ≦ (R−Y) ≦ (B−
Y) · tan (θ−β) (Equation 2) r−s ≦ {(RY) ² + (B−Y) ² } ^1/2 ≦ r + s (Equation 3) r = K1 · Y where K1 ≧ 0 , K1 are constants (Equation 4) s = K2 · Y where K2 ≧ 0, K2 is a constant

Next, the operation of the skin color detection circuit 101 shown in FIG. 10 will be described. RY color difference signal input terminal 102 to R
-The Y color difference signal is input from the BY color difference signal input terminal 103 to the B-
Input a Y color difference signal. These color difference signals are input to the memory 105 as addresses. A table as shown in FIG. 15 is written in the memory 105. In this table, numerals are written only in specific areas, and data of 0 is written in other areas. This number represents the color signal saturation. Also, a luminance signal is input to the luminance signal input terminal 104. The comparator 106 detects whether the value of the output signal of the memory 105 is within a limited range of the luminance signal level input from the luminance signal input terminal 104.

For example, in the table of FIG.
If the output of No. 5 is determined to be skin color when the output is within the range of 1/2 to 1/8 of the luminance signal level, the luminance signal input terminal
When the luminance signal level input from the memory 104 is 14, the value of the output signal of the memory 105 within the above range is 7 to 1, and FIG.
When the RY color difference signal and the BY color difference signal satisfying the range within the frame shown in FIG.
The Y color difference signal is a signal in the flesh color area,
gh "is output. The output signal of the comparator 106 is output to the skin color detection signal output terminal 107 as a skin color detection signal. With the above configuration, a skin color area satisfying the equations 1, 2, 3 and 4 is detected. With such a flesh color detection circuit 101, when a person as shown in FIG. 16 is photographed, the flesh color detection signal output from the flesh color detection signal output terminal 107 is represented by a hatched area (FIG. 17A). R1, R2, R3)
The signal waveform in the horizontal scanning direction at the position CD shown in FIG. 17 (a) is as shown in FIG. 17 (b). The color difference signal is I-axis,
It goes without saying that signal processing using the Q axis can be realized by the same signal processing as described above.

(Embodiment 3) FIG. 18 is a block diagram showing a configuration of a flesh color detecting circuit 201 for detecting a flesh color area according to a third embodiment. In FIG. 18, portions denoted by the same reference numerals as in FIG. Indicates the same or corresponding parts. In FIG. 18, reference numeral 108 denotes a low-pass filter (LPF), and reference numeral 109 denotes a slice circuit. The slicing circuit 109 is a circuit for slicing the output signal of the LPF 108 by a value of a predetermined constant k, and a specific configuration example is shown in FIG. 20, reference numeral 202 denotes an input terminal for inputting a signal output from the LPF 108; 203, an adder; 204, a switch; 205, a comparator; 206, an input terminal for inputting a constant k value to be sliced; Is an output terminal. next,
The operation will be described. After the RY color difference signal, the BY color difference signal, and the luminance signal are input to the input terminals 102, 013, and 104, respectively, the operation up to the comparator 106 is the same as that of the second embodiment, and the description thereof is omitted. The output of the comparator 106 is passed through an LPF 108 to extract only low-frequency components. This waveform is as shown in FIG. This signal is sent to the slice circuit 10
Slice with 9.

That is, everything below the set default value is set to the default value, and the entire signal is leveled down so that the default value of this signal becomes zero. LP input from input terminal 202
The output signal of F108 is subtracted by adder 203 by the value of constant k. The comparator 205 compares the output signal of the LPF 108 with a constant k, and when the output signal is larger than the constant k, outputs a selection signal to the switch 204 so that the switch 204 selects the output signal of the adder 203. Switch 20
4 selects "Low" when this output signal is smaller than the constant k. The decoder 207 passes the signal as it is. Therefore, the signal output from the decoder 207 via the output terminal 208 has a signal waveform shown in FIG. Then, this signal is output to the skin color detection signal output terminal 107 as a skin color detection signal.

(Embodiment 4) FIG. 21 is a block diagram showing a configuration of a flesh color detecting circuit 301 for detecting a flesh color region according to a fourth embodiment. In FIG. 21, the same reference numerals as in FIG. Indicates the same or corresponding parts. In FIG. 21, reference numeral 110 denotes a constant comparison circuit. Next, the operation will be described. After the RY color difference signal, the BY color difference signal, and the luminance signal are input to the input terminals 102, 103, and 104, respectively, the operation up to the comparator 106 is the same as in the second embodiment.
The description is omitted. The output of the comparator 106 is passed through an LPF 108 to extract only low-frequency components. This waveform is as shown in FIG. Then, the constant comparator 110 divides the signal into several levels according to the output, and outputs this to the skin color detection signal output terminal 107 as a skin color detection signal. This skin color detection signal has a signal waveform shown in FIG.

In the above-described second, third, and fourth embodiments, the case where a flesh-color area is detected has been described.
By rewriting the table in the above, it is also possible to use it for detection of another predetermined color area.

(Embodiment 5) Embodiment 5 for controlling the gain of the color difference signal when a flesh color area is detected will be described. FIG. 23 is a block diagram showing a configuration of the fifth embodiment. In FIG. 23, portions denoted by the same reference numerals as those in FIG. 10 indicate the same or corresponding portions. In FIG. 23, 111 and 112 are gain control circuits, 113 is an RY color difference signal output terminal, and 114 is B
-Y color difference signal output terminal.

Next, the operation will be described. The color difference signals input from the RY color difference signal input terminal 102 and the BY color difference signal input terminal 103 are input to the skin color detection circuit 101 and the gain control circuits 111 and 112. The skin color detection circuit 101 detects a skin color area according to the second embodiment based on the luminance signal input from the luminance signal input terminal 104 and the above-described color difference signal. The skin color detection circuit 101 outputs a control signal to the gain control circuits 111 and 112 when the video signal is within the skin color area. After the gain of the RY color difference signal is controlled by the gain control circuit 111, the RY
It is output from the color difference signal output terminal 113. After the gain of the BY color difference signal is controlled by the gain control circuit 112, the BY color difference signal is output from a BY color difference signal output terminal 114. Specifically, when a skin color area is detected, the gain of the RY color difference signal is increased,
Decrease the gain of the BY color difference signal. FIG. 24A shows a flesh-tone area detected by the flesh-tone detecting circuit 101, which is converted into an area shown in FIG. 24B by controlling the gain of the color difference signal as described above. For this reason, the color of the skin color area becomes reddish, and it can be corrected to a skin color close to the memory color of human.

(Embodiment 6) Embodiment 6 in which the gain of a luminance signal is controlled when a flesh color area is detected will be described. FIG. 25 is a block diagram showing a configuration of the sixth embodiment. In FIG. 25, portions denoted by the same reference numerals as those in FIG. 10 indicate the same or corresponding portions. In FIG. 25, 115 is a gain control circuit, and 116 is a luminance signal output terminal. Next, the operation will be described. RY color difference signal input terminal 102 and B-
The color difference signal input from the Y color difference signal input terminal 103 is input to the skin color detection circuit 101. The luminance signal input from the luminance signal input terminal 104 is supplied to a skin color detection circuit 101 and a gain control circuit.
Enter 115. The skin color detection circuit 101 detects a skin color area according to the second embodiment based on the luminance signal and the color difference signal. The skin color detection circuit 101 outputs a control signal to the gain control circuit 115 when the video signal is within the skin color area, the gain control circuit 115 increases the gain of the luminance signal by the control signal, and outputs the luminance signal from the luminance signal output terminal 116. Is output. For this reason,
The luminance of the flesh color region is increased, and the flesh color can be corrected to a flesh color close to the memory color of human.

(Embodiment 7) Embodiment 7 in which the gain of the aperture correction signal is controlled when a flesh color area is detected will be described. FIG. 26 is a block diagram showing a configuration of the seventh embodiment. In FIG. 26, portions denoted by the same reference numerals as those in FIG. 10 indicate the same or corresponding portions. In FIG. 26, 11
7 is an aperture correction signal input terminal, 118 is a gain control circuit, and 119 is an aperture correction signal output terminal.

Next, the operation will be described. The color difference signals input from the RY color difference signal input terminal 102 and the BY color difference signal input terminal 103 and the luminance signal input from the luminance signal input terminal 104 are input to a skin color detection circuit 101. The aperture correction signal input from the aperture correction signal input terminal 117 is input to the gain control circuit 118. Skin color detection circuit 101
Detects a flesh color region according to the second embodiment based on the luminance signal and the color difference signal. The skin color detection circuit 101 outputs a control signal to the gain control circuit 118 when the video signal is within the skin color area, and the gain control circuit 118 lowers the gain of the aperture correction signal by the control signal, and outputs an aperture correction signal output terminal 11.
9 outputs an aperture correction signal. For this reason, skin wrinkles can be suppressed.

(Eighth Embodiment) An eighth embodiment in which the frequency characteristic of the aperture correction signal is controlled when a flesh color area is detected will be described. FIG. 27 is a block diagram showing a configuration of the eighth embodiment. In FIG. 27, portions denoted by the same reference numerals as those in FIG. 26 indicate the same or corresponding portions. In FIG. 27, reference numeral 120 denotes an aperture correction circuit that can create an aperture signal and change the frequency characteristics.

Next, the operation will be described. The color difference signals input from the RY color difference signal input terminal 102 and the BY color difference signal input terminal 103 and the luminance signal input from the luminance signal input terminal 104 are input to a skin color detection circuit 101. The skin color detection circuit 101 uses a luminance signal and a color difference signal to generate a second embodiment.
To detect a flesh color area. Further, the luminance signal is input to the aperture correction circuit 120, and an aperture correction signal is created. The skin color detection circuit 101 outputs a control signal to the aperture correction circuit 120 when the video signal is within the skin color area, and the aperture correction circuit 120 changes the frequency characteristic of the aperture correction signal to be created by the control signal, and performs aperture correction. An aperture correction signal is output from the signal output terminal 119. For this reason, natural skin wrinkles can be obtained.

FIG. 28 shows the aperture correction circuit shown in FIG.
FIG. 120 is a block diagram showing the internal configuration of a 120. In FIG. 28, 121 and 122 are one-line memories, and 123, 124 and 125 are band-pass filters (BPs) having different frequency characteristics.
F), 126 and 131 are adders, and 127, 128, 129, 130 and 132 are multipliers.

Next, the operation will be described. The luminance signal input from the luminance signal input terminal 104 is stored in a one-line memory 121.
And is output to each of the BPFs 123, 124 and 125. BPFs having different frequency characteristics create horizontal aperture correction signals having different frequency characteristics. Each BPF123, 1
Signals passing through 24 and 125 are multiplied by constants of C1, C2 and C3 in multipliers 127, 128 and 129, respectively. Therefore, by changing the gain of the aperture correction signal in the horizontal direction according to the values of C1, C2, and C3 and adding the output signals of the respective multipliers by the adder 131, it is possible to generate the aperture correction signals having different frequency characteristics. Also, 1
The line memories 121 and 122, the adder 126, the multiplier 127 and the adder 131 form a vertical aperture correction signal.

As described above, a plurality of Bs having different frequency characteristics
According to the aperture correction circuit having the PF, the control signal C
The frequency characteristics of the aperture correction can be changed by 1, C2, and C3. When the video signal is within the skin color area, the skin color detection circuit 101 controls the control signals C1, C2, C3, C4,
C5 is output. The frequency characteristic of the aperture correction signal is changed by the control signal, and the aperture correction output terminal 11
9 outputs an aperture correction signal.

(Embodiment 9) Embodiment 9 is an example in which the skin color region is detected in accordance with Embodiment 3 in Embodiment 5 described above. In this example, since the gains of the RY color difference signal and the BY color difference signal change in accordance with the waveform of the skin color detection signal in the gain control circuits 111 and 112, the gain gradually changes near the boundary between the skin color and other colors. The gain of each color difference signal changes and there is no unnatural change.

(Embodiment 10) Embodiment 10 is an example in which skin color regions are detected in accordance with Embodiment 4 in Embodiment 5 described above. Also in this example, since the gains of the RY color difference signal and the BY color difference signal change in accordance with the waveform of the skin color detection signal in the gain control circuits 111 and 112, the gain gradually changes near the boundary between the skin color and other colors. The gain of each color difference signal changes and there is no unnatural change.

(Eleventh Embodiment) An eleventh embodiment is an example in which the flesh color area is detected according to the third embodiment in the sixth embodiment. In this example, since the gain of the luminance signal changes in accordance with the waveform of the flesh color detection signal in the gain control circuit 115, the gain of the luminance signal gradually changes near the boundary between the flesh color and the other colors, which causes unnaturalness. no change.

(Embodiment 12) Embodiment 12 is an example in which, in Embodiment 6 described above, a flesh color area is detected in accordance with Embodiment 4 described above. Also in this example, since the gain of the luminance signal changes in accordance with the waveform of the flesh color detection signal in the gain control circuit 115, the gain of the luminance signal gradually changes near the boundary between the flesh color and the other colors, which is unnatural. no change.

(Embodiment 13) Embodiment 13 is an example in which the skin color region is detected in accordance with Embodiment 3 in Embodiment 7 described above. In this example, since the gain of the aperture correction signal changes in accordance with the waveform of the flesh color detection signal in the gain control circuit 118, the gain of the aperture correction signal gradually changes near the boundary between the flesh color and the other colors. There is no natural change.

(Embodiment 14) Embodiment 14 is an example in which the skin color region is detected in accordance with Embodiment 4 in Embodiment 7 described above. Also in this example, since the gain of the aperture correction signal changes in accordance with the waveform of the skin color detection signal in the gain control circuit 118, the gain of the aperture correction signal gradually changes near the boundary between the skin color and another color, and the gain correction circuit 118 does not. There is no natural change.

(Embodiment 15) Embodiment 15 for controlling the frequency characteristics of a luminance signal when a flesh color area is detected will be described. FIG. 29 is a block diagram showing a configuration of the fifteenth embodiment. In FIG. 29, portions denoted by the same reference numerals as those in FIG. 10 indicate the same or corresponding portions. In FIG. 29, 133 is an LPF, and 134 is a mixing circuit.

Next, the operation will be described. The color difference signals input from the RY color difference signal input terminal 102 and the BY color difference signal input terminal 103 and the luminance signal input from the luminance signal input terminal 104 are input to a skin color detection circuit 101. The skin color detection circuit 101 uses a luminance signal and a color difference signal to generate a second embodiment.
To detect a flesh color area. The luminance signal is LPF
133 and to the mixing circuit 134. Skin color detection circuit 101
Outputs a control signal to the mixing circuit 134 when the video signal is in the flesh color area, and the mixing ratio changes according to the control signal, and L
The output of the PF 133 and the original luminance signal are mixed, and a luminance signal is output from the luminance signal output terminal 116. In the skin color region, the ratio of the output of the LPF 133 is increased. Therefore, high-frequency components in the skin color region are suppressed, and wrinkles on the skin can be suppressed.

(Embodiment 16) Embodiment 16 is an example in which the skin color area is detected in accordance with Embodiment 3 in Embodiment 15 described above. In this example, since the mixing ratio changes in the mixing circuit 134 in accordance with the waveform of the flesh color detection signal, the mixing ratio gradually changes near the boundary between the flesh color and other colors, so that there is no unnatural change.

(Embodiment 17) Embodiment 17 is an example in which a skin color area is detected in accordance with Embodiment 4 in Embodiment 15 described above. Also in this example, since the mixing ratio changes in accordance with the waveform of the flesh color detection signal in the mixing circuit 134, the mixing ratio gradually changes near the boundary between the flesh color and other colors, so that there is no unnatural change.

(Embodiment 18) FIG. 30 is a block diagram showing a configuration of an embodiment 18, in which the same reference numerals as in FIGS. 10 and 23 denote the same or corresponding parts. In FIG. 30, 135 and 136 are gain control circuits, 137 and
138 is an arithmetic circuit.

Next, the operation will be described. RY color difference signal input terminal 102, BY color difference signal input terminal 103 to RY
The color difference signal and the BY color difference signal are output from the skin color detection circuit 101, respectively.
The luminance signal is input from a luminance signal input terminal 104 to a comparator 106 in the flesh color detection circuit 101. Then, a flesh color detection circuit 101 detects a flesh color area according to the second embodiment, and outputs a flesh color detection signal to a gain control circuit.
Output to 135, 136. The RY color difference signal is output to the gain control circuit 136 and the arithmetic circuit 137, and the BY color difference signal is output to the gain control circuit 135 and the arithmetic circuit 138.

In the gain control circuits 135 and 136, the gain is controlled based on the skin color detection signal. The output of the gain control circuit 135 is input to the arithmetic circuit 137, and the output of the gain control circuit 136 is input to the arithmetic circuit 138. In the arithmetic circuits 137 and 138, the two input signals are added or subtracted and output from an RY color difference signal output terminal 113 and a BY color difference signal output terminal 114. In the skin color region, the control is performed so that the BY color difference signal is subtracted from the RY color difference signal, and the RY color difference signal is added to the BY color difference signal. For this reason, the hue shifts from yellow to red, and correction can be made to a flesh color close to the memory color of humans.

(Embodiment 19) FIG. 31 is a block diagram showing the structure of the embodiment 19, and in FIG. 31, the portions denoted by the same reference numerals as those in FIGS. 18 and 30 indicate the same or corresponding portions.

Next, the operation will be described. According to the third embodiment, the input RY color difference signal, BY
A skin color area is detected based on the color difference signal luminance signal, and a skin color detection signal is output from the skin color detection circuit 201 (slice circuit 109) to the gain control circuits 135 and 136. The following operation is the same as that of the above-mentioned eighteenth embodiment, and the description thereof is omitted. Also in the present embodiment, the skin color can be corrected to a skin color close to the memory color of a human, and the correction amount gradually changes near the boundary between the skin color and another color. Therefore, an unnatural change does not occur in this vicinity.

(Embodiment 20) FIG. 32 is a block diagram showing a configuration of the embodiment 20. In FIG. 32, portions denoted by the same reference numerals as those in FIGS. 21 and 30 indicate the same or corresponding portions.

Next, the operation will be described. According to the above-described fourth embodiment, the input RY color difference signal, BY
A skin color area is detected based on the color difference signal luminance signal, and a skin color detection signal is output from the skin color detection circuit 101 (constant comparison circuit 110) to the gain control circuits 135 and 136. The following operation is the same as that of the above-mentioned eighteenth embodiment, and the description thereof is omitted. Also in the present embodiment, the skin color can be corrected to a skin color close to the memory color of a human, and the correction amount gradually changes near the boundary between the skin color and another color. Therefore, an unnatural change does not occur in this vicinity. In each of the eighteenth, nineteenth, and twentieth embodiments, the arithmetic circuits 137 and 138 perform addition or subtraction processing.
Control may be performed so that the gain in 135 and 136 can be set to plus or minus.

In the above-described fifth to twentieth embodiments, the case where the skin color area is corrected has been described. However, by rewriting the table in the memory 105, it can be used for correction of another predetermined color area.

(Embodiment 21) FIG. 33 is a block diagram showing a configuration of a video signal processing device (embodiment 21) of a color video camera. 33, 21 is a focus lens, 22 is a solid-state image sensor, 23 is a CDS circuit, 24 is an automatic gain control circuit (AGC), 25 is an A / D converter, 26 is a signal processing circuit, 27 is a window generation circuit, 28 Is a data select circuit, 29 is a band pass filter (BPF), 30 is an integration circuit, 31 is a microcomputer, 32 is a focus lens drive circuit, 33 is a motor, 34 is a luminance signal output terminal,
35 is an RY color difference signal output terminal, 36 is a BY color difference signal output terminal, and 101 is a skin color detection circuit having an internal configuration shown in FIG.

Next, the operation will be described. The optical image formed by the focus lens 21 is photoelectrically converted by the solid-state imaging device 22. Only the signal component of the video signal output from the solid-state imaging device 22 is extracted by the CDS circuit 23 and output to the AGC 24. The AGC 24 controls the gain of the video signal so that the level of the video signal becomes constant.
Output to the D converter 25. The A / D converter 25 converts the input video signal into a digital signal. The video signal digitally converted by the A / D converter 25 is output to a signal processing circuit 26 and a data select circuit 28. The signal processing circuit 26 performs signal processing such as color separation and matrix, and outputs a luminance signal, an RY color difference signal, and a BY color difference signal.

The window generating circuit 27 outputs a window pulse defining the picture frame c shown in FIG. If no skin color area is detected, the data selection circuit 28
Only the data in the picture frame c shown in 34 is extracted. From the video signal output from the data select circuit 28, a frequency component necessary for automatic focusing is extracted by the BPF 29 and output to the integration circuit 30. The integration circuit 30 integrates the input signal for each field and outputs the integrated value to the microcomputer 31 as a focus evaluation value. The microcomputer 31 controls the focus lens drive circuit so that the focus evaluation value is maximized.
32, focus lens 21 is moved via motor 33
The subject in the image frame c shown in 34 is focused.

The skin color detection circuit 101 receives the luminance signal, the BY color difference signal, and the RY color difference signal output from the signal processing circuit 26, and detects a skin color area from the video signal. The procedure for detecting the skin color region is the same as that in the second embodiment, and the description of the operation will be omitted.

The skin color detection circuit 101 outputs a skin color detection signal to the data selection circuit 28. When the data selection circuit 28 receives the skin color detection signal from the skin color detection circuit 101, it stops inputting the window pulse output from the window generation circuit 27 and regards the skin color detection signal as a window pulse.
A only in the skin color area detected by the skin color detection circuit 101
The video signal input from the / D converter 25 is passed to the BPF 29. With the above, the skin color area becomes the focus area.

The data select circuit 28 can be realized, for example, by a circuit configuration shown in FIG. In FIG. 35, 13
9 is an input terminal for inputting a video signal, 140 is an input terminal for inputting a window pulse from the window generation circuit 27, 14
1 is an input terminal for inputting a skin color detection signal from the skin color detection circuit 101, 142 is a vertical synchronization signal input terminal, 143 is a flip-flop that gates a video signal, 144 is a switch, 14
5, 146 are flip-flops, and 147 is an output terminal.

The operation of the data select circuit 28 configured as described above will be described. The window pulse input from input terminal 140 and the skin color detection signal input from input terminal 141 are input to switch 144, respectively. Since the input signal is always fixed to “High”, the flip-flop 145 outputs a “High” signal to the flip-flop 146 when the “High” signal of the skin color detection signal is input.
The flip-flop 145 is reset by a vertical synchronization signal every field, and the flip-flop 146 outputs an input signal to the switch 144 every time the vertical synchronization signal is input. Thus, when a flesh color area is detected within one field period, a "High" signal is output from the flip-flop 146. The switch 144 selects the skin color detection signal when the signal from the flip-flop 146 is “High”, and selects the window pulse when the signal is “Low”. The signal selected by the switch 144 is output to the flip-flop 143 as an enable signal. Therefore, the flip-flop 143 gates the video signal input from the input terminal 139 with the skin color detection signal when the skin color area is detected.

The output signal of the BPF 29 is input to the microcomputer 31 via the integration circuit 30 as a focus evaluation value. The microcomputer 31 drives the focus lens 21 so that the evaluation value becomes the maximum, and focuses on the skin color area.

(Embodiment 22) FIG. 36 is a block diagram showing a configuration of a video signal processing device (embodiment 22) of a color video camera. 36, portions denoted by the same reference numerals as those in FIG. 33 indicate the same or corresponding portions. In FIG. 36, 37 is a data select circuit, 38 is an integration circuit, 39 is an iris, 40 is a motor, and 41 is an iris drive circuit.

Next, the operation will be described. Solid-state imaging device
The optical image formed on 22 is photoelectrically converted by the solid-state image sensor 22 and output to the CDS circuit 23. The CDS circuit 23 extracts only the video signal from the output signal of the solid-state imaging device 22,
The data is output to the data select circuit 37 and the AGC 24. AGC
The operations of the A / D converter 24, the A / D converter 25, and the signal processing circuit 26 are the same as those of the twenty-first embodiment.

The data selection circuit 37 allows the output signal from the CDS circuit 23 to pass to the integration circuit 38 only in the area within the picture frame c shown in FIG. 34 by the window pulse input from the window generation circuit 27. The iris 39 is connected to the solid-state imaging device 22 according to the integrated value integrated for the photometry area by the integration circuit 38.
Adjust the amount of light incident on.

The skin color detection circuit 101 detects a skin color area from the video signal according to the second embodiment, and outputs the detected skin color detection signal to the data selection circuit 37. When the skin color detection signal is input from the skin color detection circuit 101, the data selection circuit 37 stops inputting the window pulse output from the window generation circuit 27, regards the skin color detection signal as a window pulse, and outputs the output of the CDS circuit 23 only within the skin color area. The signal is passed to the integration circuit 38. A specific configuration example of the data select circuit 37 is the same as that of the twenty-first embodiment (FIG. 35). In this way, when a flesh-colored area is detected in a video signal, the flesh-colored area becomes a photometric area, and the iris 39 performs light quantity control according to the light quantity of the flesh-colored area.

(Embodiment 23) FIG. 37 is a block diagram showing a configuration of a video signal processing device (embodiment 23) of a color video camera. In FIG. 37, portions denoted by the same reference numerals as those in FIG. 33 indicate the same or corresponding portions. In FIG. 37, 47 is a data select circuit, and 48 is an integration circuit.

Next, the operation will be described. Solid-state imaging device
The optical image formed on 22 is photoelectrically converted by the solid-state image sensor 22 and output to the CDS circuit 23. The CDS circuit 23 extracts only the video signal from the output signal of the solid-state imaging device 22,
Output to AGC24. The AGC 24 controls the gain of the video signal so as to keep the video signal level constant. The output signal of the AGC 4 is supplied to a data select circuit 47 and an A / D converter.
Output to 25. The data select circuit 47 outputs the video signal input from the AGC 24 to the integration circuit 48 only in the area within the picture frame c shown in FIG. 34 defined by the window pulse output from the window generation circuit 27. A specific configuration example of the data select circuit 47 is the same as that of the twenty-first embodiment (FIG. 35). The integration circuit 48 integrates the signal input from the data selection circuit 47 for one field, and outputs the integrated value to the AGC 24 as a gain control signal of the video signal. The AGC 24 controls the gain of the video signal according to the gain control signal, and makes the video signal level constant by performing feedback control. The operations of the A / D converter 25 and the signal processing circuit 26 are the same as in the twenty-first embodiment.

The flesh color detection circuit 101 detects a flesh color region from the video signal according to the second embodiment, and outputs the detected flesh color detection signal to the data selection circuit 47. When the skin color detection signal is input from the skin color detection circuit 101, the data selection circuit 47 stops inputting the window pulse output from the window generation circuit 27, regards the skin color detection signal as a window pulse, and outputs the output signal of the AGC 24 only in the skin color region. The signal is passed to the integration circuit 48. By doing so, the flesh-colored area becomes the photometric area, and the AGC 24 performs gain control according to the luminance level of the flesh-colored area.

(Embodiment 24) FIG. 38 is a block diagram showing a configuration of a video signal processing device (embodiment 24) of a color video camera. 38, portions denoted by the same reference numerals as those in FIG. 33 indicate the same or corresponding portions. In FIG. 38, reference numeral 37 denotes the same data select circuit as in the twenty-second embodiment.
, An integration circuit; 380, an A / D converter; 42, a timing generator (TG) for driving the solid-state imaging device; and 43, a solid-state imaging device drive circuit.

Next, the operation will be described. The TG 42 generates a pulse necessary for driving the solid-state imaging device 22. The solid-state image sensor drive circuit 43 inputs a pulse from the TG 42 and drives the solid-state image sensor 22. The solid-state imaging device 22 photoelectrically converts the optical image formed on the solid-state
Output to the S circuit 23. The CDS circuit 23 extracts only the video signal from the output signal of the solid-state imaging device 22, and outputs the extracted signal to the data select circuit 37 and the AGC 24. The operations of the AGC 24, A / D converter 25, and signal processing circuit 26 are the same as those of the twenty-first embodiment.

The data select circuit 37 extracts the video signal only from the area within the picture frame c shown in FIG. 34 defined by the window pulse output from the window generation circuit 27,
Output to the integration circuit 338. The integration circuit 338 integrates the signal input from the data selection circuit 37 for one field, and outputs the integrated value to the A / D converter 380 as a light amount value. The microcomputer 31 outputs a control signal to the TG 42 to change the shutter speed according to the digitized integrated value. TG 42 changes the shutter reading speed by changing the rate of the sensor reading pulse according to the control signal input from the microcomputer 31,
The output signal level of the CDS circuit 23 is always kept constant.

The flesh color detecting circuit 101 detects a flesh color region from the video signal according to the second embodiment, and outputs the detected flesh color detection signal to the data selection circuit 37. When the data selection circuit 37 receives the skin color detection signal from the skin color detection circuit 101, it stops inputting the window pulse output from the window generation circuit 27, regards the skin color detection signal as a window pulse, and integrates the video signal only in the skin color area. Pass through to 338. By doing so, the skin color area becomes a photometry area, and the electronic shutter speed is adjusted in accordance with the amount of light in the skin color area.

(Embodiment 25) FIG. 39 is a block diagram showing a configuration of a video signal processing device (embodiment 25) of a color video camera. In FIG. 39, portions denoted by the same reference numerals as those in FIG. 33 indicate the same or corresponding portions. In FIG. 38, reference numeral 78 denotes a low-pass filter (LPF), and 79 denotes a slice circuit. The slice circuit 79 has the same internal configuration as the slice circuit 109 shown in FIG. 20, and the LPF 78 and the slice circuit 79 show a specific example in the horizontal scanning direction in FIG. Are also configured to have the same effect.

Next, the operation will be described. Since the basic operation is the same as that of the above-described twenty-first embodiment, the different points will be described. The skin color detection circuit 101 detects only the skin color region from the video signal and outputs a skin color detection signal to the LPF 78. When a subject as shown in FIG. 16 is photographed, the skin color detection signal is as shown in FIG. 17 (a), and the skin color detection signal in the horizontal scanning direction on CD in FIG. 17 (a) is as shown in FIG. 17 (b). Become like LPF
Reference numeral 78 inputs the signal of FIG. 40 (a) and outputs the signal of FIG. 40 (b) to the slice circuit 79. The slicing circuit 79 slices the signal of FIG. 40 (b) by a predetermined constant k, and forms the sliced signal of FIG. 40 (c) into the signal of FIG. 40 (d).
The specific operation of the slice circuit 79 is as follows.

The skin color detection signal shown in FIG. 40B input from the input terminal 202 is subtracted by the adder 203 by the value of the constant k. The comparator 205 compares the signal of FIG. 40 (b) with a constant k, and when the signal of FIG. 40 (b) is larger than the constant k, sends a selection signal to the switch 204 so that the switch 204 selects the output signal of the adder 203. Is output. Switch 204 is shown in FIG.
"Low" is selected when the signal is smaller than the constant k. The output signal of the switch 204 is shown in FIG. Decoder 207
Indicates that any bit in the output signal of the switch 204 is “Hig
At the time of "h", a signal of all bits "High" is output.Therefore, the signal output from the decoder 207 becomes the signal shown in Fig. 40 (d), and the signal width w2 of Fig. 40 (d) is as shown in Fig. 40 (d). 40 (d) by adjusting the delay time with the video signal output from the signal processing circuit 26.
The region represented by the signal (1) is a region (e in FIG. 41) surrounded by a solid line shown in FIG. The area d in FIG. 41 is the skin color detection circuit 10.
The area represented by the skin color detection signal output from 1 is shown.

When a signal is input from the slice circuit 79, the data select circuit 28 stops inputting the window pulse output from the window generation circuit 27, and regards the signal output from the slice circuit 79 as a window pulse, as shown in FIG. The signal input from the A / D converter 25 is passed to the BPF 29 only in the area of e. By doing so, the area e shown in FIG. 41 becomes the focus area. B
The output signal of the PF 29 is input to the microcomputer 31 via the integration circuit 30 as a focus evaluation value. The microcomputer 31 drives the focus lens 21 so that the focus evaluation value becomes the maximum, and focuses on the skin color area.

(Embodiment 26) FIG. 42 is a block diagram showing a configuration of a video signal processing device (embodiment 26) of a color video camera. 42, portions denoted by the same reference numerals as in FIG. 39 indicate the same or corresponding portions, and 328 denotes a data select circuit. Embodiment 26 is different from Embodiment 25 described above.
This is an example in which the focus area is set to be larger than the detected flesh-tone area, as in the case of the above.

FIG. 43 is a block diagram showing a structure of data select circuit 328 according to the twenty-sixth embodiment. 43, reference numeral 148 denotes a video signal input terminal, 149 denotes a circuit drive clock input terminal, 150 denotes an input terminal for inputting a skin color detection signal output from the skin color detection circuit 101, and 151 denotes an output signal from the microcomputer 31 (predetermined value). k), an input terminal for inputting a horizontal synchronization signal (HD) 152,
153 is an input terminal for inputting a vertical synchronization signal (VD);
Is an input terminal for inputting a window pulse from the window generation circuit 27, 155 is a delay circuit, 156 is a counter, 157 is an inverter element, 158 is a comparator, 159 is a flip-flop, 160 is a counter, 161 is a comparator, and 162 is a flip-flop. , 163 is an AND element, 164 is an inverter element, 16
5 is an OR element, 166, 167, 168 are flip-flops, 16
9 is a switch, 170 is an output terminal, 401 is an inverter element, and 402 is an OR element.

Next, the operation will be described. Since the basic operation is the same as in the embodiments 21 and 25, the operation in data select circuit 28 will be described below. Input terminal 154
Are input to the switch 169. The skin color detection signal shown in FIG. 44 (a) output from the skin color detection circuit 101 is input from an input terminal 150 as an enable signal for the counter 160. Therefore, the counter 160 counts up only while the skin color detection signal is “High”.
The output signal of counter 160 is output to comparator 161.

The comparator 161 compares the output signal from the counter 160 with a constant k input from the input terminal 151. The output signal from the counter 160 is a constant k
When it becomes larger, a “High” signal is output. The output signal of the comparator 161 is shown in FIG. The output signal of the comparator 161 is input as a drive clock for the flip-flop 162. Because the flip-flop 162 fixes the input signal to “High”, it becomes “High” at the rise of the drive clock.
Is output. The flip-flop 162 and the counter 160 are reset by the HD input from the input terminal 152. Therefore, the signal of FIG. 44B is output every horizontal scanning period. The output signal of the flip-flop 162 is input to the AND element 163, and the skin color detection signal (FIG.
44 (a)) and output as a reset signal of the counter 156 and the flip-flop 159. AND element 16
The output signal of No. 3 is shown in Fig. 44 (c).

The skin color detection signal (FIG. 44 (a)) is input to the counter 156 via the inverter 157. The output signal of the inverter 157 is shown in FIG. Counter 15
6 counts up only while the output signal of the inverter element 157 is “High”. The output signal of the counter 156 is input to the comparator 158. When the output signal becomes larger than the constant k input from the microcomputer 31, the comparator 158 outputs "High".
Is output. FIG. 44 (e) shows the output signal of the comparator 158.
The output signal of the comparator 161 is input as a drive clock for the flip-flop 159. The flip-flop 159 outputs “High” at the rising edge of the drive clock since the input signal is fixed at “High”. The output signal of flip-flop 159 is input to OR element 165 via inverter element 164. The OR element 165 performs an OR operation on the output signal (FIG. 44 (f)) of the inverter element 164 and the skin color detection signal (FIG. 44 (a)). The output signal of the OR element 165 is shown in FIG. Figure 44
The signal of (g) is supplied to the OR element 402 through the inverter element 401.
To the next line to be logically ORed with HD
The signal of (b) becomes (b ′).

The flip-flop 167 outputs a "High" signal when the flesh color detection signal is "High", and is reset by VD every field. The flip-flop 168 outputs an output signal of the flip-flop 167 every time VD is input. Switch 169 is a flip-flop
When the signal from 168 is "High", the skin color detection signal is selected, and when it is "Low", the window pulse is selected. Therefore, when a skin color area is detected during one field period, the window pulse output from the window generation circuit 27 is not selected by the switch 169, and the signal in FIG. 44 (g) is selected as a gate signal. The signal selected by the switch 169 is output to the flip-flop 166 as an enable signal. The video signal output from the A / D converter 25 is input from an input terminal 148, and is delayed by a delay circuit 155 by T1 / 2 shown in FIG. The video signal delayed by T1 / 2 is input to the flip-flop 166, and the flip-flop 166 gates the video signal with the signal shown in FIG. Further, it is configured to generate the signal of FIG. 44 (g) also in the vertical scanning direction. With the above circuit configuration, the video signal can be gated only in a region e (see FIG. 41) larger than the skin color region d detected by the skin color detection circuit 101.

The following operation is the same as that of the twenty-fifth embodiment, and a description thereof will not be repeated. Note that the data select circuit
FIG. 43 shows a specific configuration example of 28, but it goes without saying that the circuit configuration is not limited to the above-described circuit configuration as long as it is a circuit configuration for forming the signal of FIG.

(Embodiment 27) FIG. 45 is a block diagram showing a configuration of a video signal processing device (embodiment 27) of a color video camera. In FIG. 45, portions denoted by the same reference numerals as those in FIG. 36 indicate the same or corresponding portions. In FIG. 45, reference numeral 78 denotes a low-pass filter (LPF), and 79 denotes a slice circuit. The slice circuit 79 has the same internal configuration as the slice circuit 109 shown in FIG. 20, and the LPF 78 and the slice circuit 79 show a specific example in the horizontal scanning direction in FIG. Are also configured to have the same effect.

Next, the operation will be described. Since the basic operation is the same as that of the above-described twenty-second embodiment, the different points will be described. The skin color detection circuit 101 detects only the skin color region from the video signal and outputs a skin color detection signal to the LPF 78. When a subject as shown in FIG. 16 is photographed, the skin color detection signal is as shown in FIG. 17 (a), and the skin color detection signal in the horizontal scanning direction on CD in FIG. 17 (a) is as shown in FIG. 17 (b). Become like LPF
46 inputs the signal of FIG. 46 (a) and outputs the signal of FIG. 46 (b) to the slice circuit 79. The slicing circuit 79 slices the signal of FIG. 46 (b) by the value of a predetermined constant k, and forms the sliced signal of FIG. 46 (c) into the signal of FIG. 46 (d).
The specific operation of the slice circuit 79 is the same as in the twenty-fifth embodiment. The signal width w3 in FIG. 46 (d) is the signal width w in FIG. 46 (a).
Narrower than 1. The area represented by the signal in FIG.
47 (f in FIG. 47). The area d in FIG. 47 indicates the area represented by the skin color detection signal output from the skin color detection circuit 101.

When the data selection circuit 37 receives the skin color detection signal from the slice circuit 79, it stops inputting the window pulse output from the window generation circuit 27 and regards the signal output from the slice circuit 79 as a window pulse. The signal input from the CDS circuit 23 is passed to the integration circuit 38 only in the region of the middle f. Data select circuit 37
Is similar to that of FIG. By doing so, the area f shown in FIG. 47 becomes the photometric area. The output signal of the data select circuit 37 is input to the iris drive circuit 41 as a light amount value via the integration circuit 38, and the iris 39 performs light amount control according to the light amount in the skin color area.

(Embodiment 28) FIG. 48 is a block diagram showing a configuration of a video signal processing apparatus (embodiment 28) of a color video camera. 48, portions denoted by the same reference numerals as those in FIG. 45 indicate the same or corresponding portions, and 337 denotes a data select circuit. Embodiment 28 is based on Embodiment 27
This is an example in which the photometric area is set smaller than the detected flesh color area in the same manner as
Do within. FIG. 49 is a block diagram showing a configuration of data select circuit 337 in the twenty-eighth embodiment. 49, portions denoted by the same reference numerals as those in FIG. 43 indicate the same or corresponding portions.

Next, the operation will be described. Since the basic operation is the same as in the twenty-second and twenty-seventh embodiments, the operation in data select circuit 28 will be described below. The microcomputer 31 outputs a predetermined value of k to the data selection circuit 37. The window pulse input from input terminal 154 is input to switch 169. Skin color detection circuit 10
The skin color detection signal shown in FIG. 44 (a) output from 1 is input from an input terminal 150 as an enable signal for the counter 156.

Therefore, the counter 156 determines that the skin color detection signal is "Hi".
gh ”. The output signal of the counter 156 is output to the comparator 161. The comparator 161 compares the output signal from the counter 156 with the constant k input from the input terminal 151. The comparator 161 outputs a "High" signal when the output signal from the counter 156 becomes larger than the constant k. The output signal of the comparator 161 is shown in Fig. 44 (b). The signal is input as a drive clock for the flip-flop 162. Since the input signal is fixed at “High”, the flip-flop 162 outputs “High” at the rise of the drive clock.
2 and the counter 156 are the HD input from the input terminal 152.
Reset with. Therefore, the signal of FIG. 44B is output every horizontal scanning period. The output signal of flip-flop 162 is A
The ND element 163 performs an AND operation with the skin color detection signal (FIG. 44 (a)) output from the skin color detection circuit 101. FIG. 44 (c) shows the output signal of the AND element 163.

The flip-flop 167 outputs a "High" signal when the flesh color detection signal is "High", and is reset by VD every field. The flip-flop 168 outputs an output signal of the flip-flop 167 every time VD is input. Switch 169 is a flip-flop
When the signal from 168 is "High", the skin color detection signal is selected, and when it is "Low", the window pulse is selected. Therefore, when a flesh color area is detected during one field period, the window pulse output from the window generating circuit 27 is not selected by the switch 169, and the signal in FIG. 44 (c) is selected as a gate signal. The signal selected by the switch 169 is output to the flip-flop 166 as an enable signal. The video signal output from the A / D converter 25 is input from the input terminal 148 and is delayed by T1 / 2 by the delay circuit 155. The video signal delayed by T1 / 2 is input to the flip-flop 166, and the flip-flop 166 gates the video signal with the signal shown in FIG. With the above circuit configuration, the video signal can be gated only in the area f (see FIG. 47) smaller than the skin color area d detected by the skin color detection circuit 101.

The following operation is the same as that of the twenty-seventh embodiment, and a description thereof will not be repeated. Note that the data select circuit
Although a specific configuration example of 37 is shown in FIG. 49, it goes without saying that the circuit configuration is not limited to the above-described circuit configuration as long as it is a circuit configuration for forming the signal of FIG.

(Embodiment 29) FIG. 50 is a block diagram showing a configuration of a video signal processing device (embodiment 29) of a color video camera. In FIG. 50, portions denoted by the same reference numerals as those in FIG. 37 indicate the same or corresponding portions. In FIG. 45, reference numeral 78 denotes a low-pass filter (LPF), and 79 denotes a slice circuit. The slice circuit 79 has the same internal configuration as the slice circuit 109 shown in FIG. 20, and the LPF 78 and the slice circuit 79 show a specific example in the horizontal scanning direction in FIG. Are also configured to have the same effect.

Next, the operation will be described. The basic operation is the same as that of the above-described twenty-third embodiment, and therefore, different points will be described. Similar to the twenty-seventh embodiment, slice circuit 79
Is output as shown in FIG. 46 (d), and its width w3 is smaller than the width w1 of the flesh color detection signal (FIG. 46 (a)). Figure 46
The region represented by the signal (d) is a region surrounded by a solid line shown in FIG. 47 (f in FIG. 47).

When the data selection circuit 47 receives the skin color detection signal from the slice circuit 79, it stops inputting the window pulse output from the window generation circuit 27, and regards the signal output from the slice circuit 79 as a window pulse. The signal input from the AGC 24 is passed to the integration circuit 48 only in the region of the middle f. A specific configuration example of the data select circuit 47 is the same as that of FIG. By doing so, the area f in FIG. 47 becomes the photometric area. The output signal of the data select circuit 47 is input to the AGC 24 as a light amount value via the integration circuit 48, and the AGC 24 performs gain control according to the light amount in the area f in FIG.

(Embodiment 30) FIG. 51 is a block diagram showing a configuration of a video signal processing device (embodiment 30) of a color video camera. In FIG. 51, portions denoted by the same reference numerals as those in FIG. 50 indicate the same or corresponding portions. Embodiment 30
Is an example in which the photometric area is set to be smaller than the detected flesh color area as in the above-described embodiment 29. This setting operation is performed in the data select circuit 347. Data select circuit 34
The configuration of FIG. 7 is the same as the configuration of the data select circuit 337 shown in FIG.

The basic operation is the same as that of the twenty-third and twenty-ninth embodiments, and the operation in data select circuit 347 is as follows.
Since the operation is the same as that in select circuit 337 of the twenty-eighth embodiment described above, description thereof is omitted.

(Embodiment 31) FIG. 52 is a block diagram showing a configuration of a video signal processing device (embodiment 31) of a color video camera. In FIG. 52, portions denoted by the same reference numerals as in FIGS. 38 and 45 indicate the same or corresponding portions. The thirty-first embodiment is an example in which the photometry area is smaller than the flesh-color area in the above-described twenty-fourth embodiment (an example in which the shutter speed is adjusted according to the light amount of the flesh-color area), as in the twenty-seventh and twenty-ninth embodiments. . The operation of the present embodiment is described in these embodiments.
Since it is easily understood with reference to 24, 27, 29, etc., the description is omitted.

(Embodiment 32) FIG. 53 is a block diagram showing a configuration of a video signal processing device (embodiment 32) of a color video camera. 53, portions denoted by the same reference numerals as those in FIG. 52 indicate the same or corresponding portions. Embodiment 32
Is an example in which the photometric area is set to be smaller than the detected flesh color area, as in the above-described embodiment 31, and this setting operation is performed in the data select circuit 337 as in the embodiment 28.
The basic operation is the same as that of the twenty-fourth embodiment, and the operation in data select circuit 337 is the same as that of the twenty-eighth embodiment.

(Embodiment 33) FIG. 54 is a block diagram showing a configuration of a video signal processing device (embodiment 33) of a color video camera. 54, portions denoted by the same reference numerals as those in FIG. 39 indicate the same or corresponding portions. In FIG. 54, reference numeral 44 denotes a zoom lens, 45 denotes a motor for moving the zoom lens 44, and 46 denotes a zoom lens drive circuit that supplies a drive signal to the motor 45 based on a control signal from the microcomputer 31.

The basic operation of this embodiment is the same as that of the twenty-fifth embodiment. In the present embodiment, the microcomputer 31 calculates the distance L from the position of the focus lens 21 and the position of the zoom lens 44 to the subject and the magnification Z of the subject, and uses the distance L and the magnification Z. As shown in Expression 5, k is determined, and the determined k is output to the slice circuit 79 as a slice level.

(Equation 5) k = a · Z / L where a is a constant

By setting k in this way,
The focus area (the area e) shown in FIG. 41 depends on the distance to the subject and the magnification of the subject, for example, as shown in FIG.
5, changes as shown in FIG.

(Embodiment 34) FIG. 57 is a block diagram showing a configuration of a video signal processing apparatus (embodiment 34) of a color video camera. In FIG. 57, portions denoted by the same reference numerals as those in FIGS. 42 and 54 indicate the same or corresponding portions. This embodiment is an example in which, in the above-described Embodiment 26, k calculated by Expression 5 is output to the data select circuit 28 as in Embodiment 33.

(Embodiment 35) FIG. 58 is a block diagram showing a configuration of a video signal processing device (embodiment 35) of a color video camera. In FIG. 58, portions denoted by the same reference numerals as those in FIGS. 45 and 54 indicate the same or corresponding portions.

The basic operation of this embodiment is the same as that of the twenty-seventh embodiment. In the present embodiment, the microcomputer 31 calculates the distance L from the position of the focus lens 21 and the position of the zoom lens 44 to the subject and the magnification Z of the subject, and determines k as shown in Expression 5 above. , And the determined k is output to the slice circuit 79 as a slice level. By setting k in this way, the figure
The photometric area (area f) shown in 47 changes according to the distance to the subject and the magnification of the subject, for example, as shown in FIGS. 59 and 60.

(Embodiment 36) FIG. 61 is a block diagram showing a configuration of a video signal processing device (embodiment 36) of a color video camera. In FIG. 61, portions denoted by the same reference numerals as those in FIGS. 48 and 58 indicate the same or corresponding portions. This embodiment is an example in which, in the above-described Embodiment 28, k calculated by Expression 5 is output to the data select circuit 37 as in Embodiment 35.

(Embodiment 37) FIG. 62 is a block diagram showing a configuration of a video signal processing device (embodiment 37) of a color video camera. 62, portions denoted by the same reference numerals as those in FIGS. 50 and 54 indicate the same or corresponding portions.

The basic operation of this embodiment is the same as that of the twenty-ninth embodiment. In the present embodiment, the microcomputer 31 calculates the distance L from the position of the focus lens 21 and the position of the zoom lens 44 to the subject and the magnification Z of the subject, and determines k as shown in Expression 5 above. , And the determined k is output to the slice circuit 79 as a slice level. By setting k in this way, the figure
The photometric area (area f) shown in 47 changes according to the distance to the subject and the magnification of the subject, for example, as shown in FIGS. 59 and 60.

(Embodiment 38) FIG. 63 is a block diagram showing a configuration of a video signal processing device (embodiment 38) of a color video camera. 63, portions denoted by the same reference numerals as those in FIGS. 51 and 62 indicate the same or corresponding portions. This embodiment is an example in which k calculated by Expression 5 is output to the data select circuit 47 in the same manner as the thirty-seventh embodiment in the thirty-third embodiment.

(Embodiment 39) FIG. 64 is a block diagram showing a configuration of a video signal processing device (embodiment 39) of a color video camera. 64, portions denoted by the same reference numerals as those in FIGS. 52 and 54 indicate the same or corresponding portions.

The basic operation of this embodiment is the same as that of the thirty-first embodiment. In the present embodiment, the microcomputer 31 calculates the distance L from the position of the focus lens 21 and the position of the zoom lens 44 to the subject and the magnification Z of the subject, and determines k as shown in Expression 5 above. , And the determined k is output to the slice circuit 79 as a slice level. By setting k in this way, the figure
The photometric area (area f) shown in 47 changes according to the distance to the subject and the magnification of the subject, for example, as shown in FIGS. 59 and 60.

(Embodiment 40) FIG. 65 is a block diagram showing a configuration of a video signal processing device (embodiment 40) of a color video camera. 65, portions denoted by the same reference numerals as those in FIGS. 53 and 64 indicate the same or corresponding portions. This embodiment is an example in which k calculated by Expression 5 is output to the data select circuit 37 in the above-described Embodiment 32 in the same manner as in Embodiment 39.

(Embodiment 41) Embodiment 41 is an example in which the value of k to be calculated is limited in Embodiment 33 described above. The configuration of the present embodiment is the same as that of Embodiment 33 (FIG. 54). The microcomputer 31 calculates the distance L from the position of the focus lens 21 and the position of the zoom lens 44 to the subject and the magnification Z of the subject, and calculates these L.
And Z are used to determine k as shown in Equation 5, and k calculated from Equation 5 is a predetermined s1 as shown in Equation 6.
And s2.

(Equation 6) s1 ≧ a · Z / L ≧ s2

In this embodiment, as shown in FIGS. 55 and 56, the focus area changes depending on L and Z, but since the value of k is limited by s1, the reciprocal of the distance to the subject ( When the product of (1 / L), the magnification Z of the object, and the constant a is equal to or more than s1, k becomes a fixed value of s1. Therefore, when the flesh-color area exceeds the angle of view defined by s1, the focus area becomes a smaller area (FIG. 66e) as shown in FIG. It goes without saying that such a method can also be realized in the thirty-fourth embodiment (the configuration in FIG. 57).

(Embodiment 42) Embodiment 42 is an example in which the value of k to be calculated is limited in Embodiment 35 described above. The configuration of the present embodiment is the same as Embodiment 35 (FIG. 58). The microcomputer 31 determines k as shown in Expression 5 based on the distance L to the subject and the magnification Z of the subject, and k calculated from Expression 5 is s1 which is determined in advance as shown in Expression 6 above. And s2. In this embodiment, as shown in FIGS. 59 and 60, the focus area changes depending on L and Z.
Since the value of k is limited by s2, the product of the reciprocal (1 / L) of the distance to the subject, the magnification Z of the subject, and the constant a is s.
When it becomes 2 or less, k becomes a fixed value of s2. Therefore, when the flesh color area falls below the angle of view determined by s2, the photometric area becomes larger than the flesh color area as shown in FIG. 67 (FIG. 67f).
Becomes Note that such a method is described in Embodiment 36 (FIG. 61).
Needless to say, the present invention can also be realized by the above configuration.

(Embodiment 43) Embodiment 43 is an example in which the value of k to be calculated is restricted in the above-described embodiment 37. The configuration of the present embodiment is the same as that of Embodiment 37 (FIG. 62). The microcomputer 31 determines k as shown in Expression 5 based on the distance L to the subject and the magnification Z of the subject, and k calculated from Expression 5 is s1 which is determined in advance as shown in Expression 6 above. And s2. In this embodiment, as shown in FIGS. 59 and 60, the focus area changes depending on L and Z.
Since the value of k is limited by s2, the product of the reciprocal (1 / L) of the distance to the subject, the magnification Z of the subject, and the constant a is s.
When it becomes 2 or less, k becomes a fixed value of s2. Therefore, when the flesh color area falls below the angle of view defined by s2, the photometric area becomes a larger area than the flesh color area as shown in FIG. It goes without saying that such a method can also be realized in the thirty-eighth embodiment (the configuration in FIG. 63).

(Embodiment 44) Embodiment 44 is an example in which the value of k to be calculated is limited in the above-described embodiment 39. The configuration of the present embodiment is the same as that of the thirty-ninth embodiment (FIG. 64). The microcomputer 31 determines k as shown in Expression 5 based on the distance L to the subject and the magnification Z of the subject, and k calculated from Expression 5 is s1 which is determined in advance as shown in Expression 6 above. And s2. In this embodiment, as shown in FIGS. 59 and 60, the focus area changes depending on L and Z.
Since the value of k is limited by s2, the product of the reciprocal (1 / L) of the distance to the subject, the magnification Z of the subject, and the constant a is s.
When it becomes 2 or less, k becomes a fixed value of s2. Therefore, when the flesh color area falls below the angle of view defined by s2, the photometric area becomes a larger area than the flesh color area as shown in FIG. It goes without saying that such a method can also be realized in the fortieth embodiment (the configuration in FIG. 65).

As described above, Embodiments 21, 25, 26, 33,
In 34 and 41, with a simple circuit configuration, autofocus can always focus on the main subject (person). Embodiments 22, 23, 24, 27, 28, 29, 30, 31, 32, 35, 3
For 6, 37, 38, 39, 40, 42, 43, and 44, the main subject (person) being shot is optimal without overexposure or overexposure, regardless of backlit or over-directed light. Photometric area control can be performed so that a proper image can be obtained.

(Embodiment 45) FIG. 68 is a block diagram showing a configuration of a color video camera (Embodiment 45).
In FIG. 68, portions denoted by the same reference numerals as those in FIG. 33 indicate the same or corresponding portions. In FIG. 68, 49 is a remote controller,
50 is a receiving circuit, 80 is an output terminal, and 351 is a data latch circuit. FIG. 69 shows the internal configuration of the data latch circuit 351. Reference numerals 402 and 403 denote flip-flops.

Next, the operation will be described. The setting of the focus area and the detection of the skin color area in the skin color detection circuit 101 are the same as those in the twenty-first embodiment, and thus the description thereof is omitted. The skin color detection signal detected by the skin color detection circuit 101 is output to the data latch circuit 351. The skin color detection signal is input as a driving clock for the flip-flop 402. Since the signal input terminal of the flip-flop 402 is fixed at “High”, when the signal of the skin color detection signal of “High” is inputted, the signal of “High” is outputted. The output signal of the flip-flop 402 is input as a drive clock for the flip-flop 403, and performs the same operation as the flip-flop 402. Also flip-flop
A VD pulse is input to the reset terminal as a reset signal of 402 and 403. As described above, when a flesh color area is detected within one vertical scanning period, the data latch circuit 351 outputs a “High” signal during the next one horizontal scanning period.
Therefore, it can be determined from the output signal of the data latch circuit 351 whether or not there is a flesh color area within one horizontal scanning period.

The flowchart of FIG. 70 shows the algorithm of the microcomputer 31. Hereinafter, description will be made with reference to the flowchart in FIG. First, when the receiving circuit 50 receives the “recording signal” transmitted from the remote controller 49,
The “recording signal” is output to the microcomputer 31. When the "recording signal" is input (step S1), the microcomputer 31 determines whether or not there is a flesh-color area in the video signal being photographed from the output signal of the flesh-color detecting circuit 101 (step S2). If there is no flesh color area in the signal, no “recording signal” is output to the output terminal 80 (step S
3). Therefore, even if a "recording signal" is transmitted from the remote controller 49, recording is not started.

When a flesh-tone area is detected in the video signal from the output signal of the data latch circuit 351, the microcomputer 31 outputs a "recording signal" to the output terminal 80. The video camera starts recording a video signal being captured by the "recording signal" output from the microcomputer 31 (step 4). After the start of recording, it is determined whether there is a flesh-color area in the video signal (step S5). If no flesh-color area is detected in the video signal, the microcomputer 31 outputs a "recording stop signal" (step S5). S
6), the video camera stops recording by the "recording stop signal".

(Embodiment 46) FIG. 71 is a block diagram showing the structure of a color video camera (Embodiment 46).
71, portions denoted by the same reference numerals as in FIG. 68 indicate the same or corresponding portions. In FIG. 701, 81 is an output terminal,
82 is a resistor, and 83 is a light emitting diode.

The flowchart in FIG. 72 shows the algorithm in the microcomputer 31 according to the present embodiment, and the steps having the same contents as those in the flowchart shown in FIG. 70 have the same step numbers. If there is no flesh-colored area in the video signal being captured before the start of recording (step 2: NO), an “erroneous recording signal” is output to the output terminal 81. (Step 7). Therefore, even if a “recording signal” is transmitted from the remote controller 49, recording is not started. Also, if no flesh-tone area is detected in the video signal after the start of recording (step 5: NO), the microcomputer 31 outputs the "wrong recording signal" to the output terminal 81 (step 8).

In this case, it is assumed that the microcomputer 31 outputs a 5 V, "High" signal to the output terminal 81. The above signal is input to the light emitting diode 83 via the resistor 82, and the light emitting diode 83 emits light.
The “erroneous recording signal” is not limited to 5 V and “High”, but may be another voltage or another data signal.

(Embodiment 47) FIG. 73 is a block diagram showing a configuration of a color video camera (Embodiment 47).
73, portions denoted by the same reference numerals as those in FIG. 68 indicate the same or corresponding portions. In FIG. 73, reference numeral 84 denotes a buzzer transmission circuit, and reference numeral 85 denotes a buzzer. Next, the operation will be described. When no flesh-tone area is detected in the video signal, an “erroneous recording signal” is output to the buzzer transmission circuit 84 according to the flowchart shown in FIG. When the "erroneous recording signal" is input, the buzzer transmission circuit 84 transmits the buzzer 85. Note that the buzzer transmission circuit 84 and the buzzer 85 may be configured to generate an electronic sound.

(Embodiment 48) FIG. 74 is a block diagram showing a configuration of a color video camera (Embodiment 48).
74, portions denoted by the same reference numerals as in FIG. 68 indicate the same or corresponding portions. In FIG. 74, reference numeral 86 denotes a remote controller 49.
Similarly to the above, the transmitting circuit transmits a signal from the microcomputer 31 by an infrared light emission pattern.

Next, the operation will be described. When no flesh-tone area is detected in the video signal, an “erroneous recording signal” is output to the transmission circuit 86 according to the flowchart shown in FIG. As shown in FIG. 75, the remote controller 49 includes a receiving circuit 87 for receiving the transmitted infrared rays, and a liquid crystal display 88 for displaying characters and the like. Remote control 49 is a transmission circuit
When receiving the “wrong recording signal” transmitted from 86, the liquid crystal display 88 indicates that there is a wrong recording. The liquid crystal display 88 may be another display device such as a cathode ray tube.

Further, instead of the display provided on the remote controller 49, a buzzer transmitting circuit 89 and a buzzer 90 are provided as shown in FIG. 76, and when the receiving circuit 87 receives the "erroneous recording signal", it receives this signal. Is output to the buzzer transmission circuit 89, and when the buzzer transmission circuit 89 receives a signal from the reception circuit 87, the same effect can be obtained even if the buzzer 90 is transmitted. Needless to say. Note that the buzzer 90 and the buzzer transmission circuit 89 may have a circuit configuration that emits an electronic sound.

(Embodiment 49) FIG. 77 is a block diagram showing a structure of a color video camera (Embodiment 49).
77, portions denoted by the same reference numerals as those in FIG. 68 indicate the same or corresponding portions. In FIG. 77, 171 is an encoder, 172 and 173 are D / A converters, 174 is a luminance signal processing circuit, 175 is an FM modulation circuit, 176 is a high-pass filter (HPF), and 177 is an automatic chroma gain control circuit (AC
C), 178 is a burst emphasis circuit, 179 is a frequency low-frequency conversion circuit, 180 is a low-pass filter (LPF), 18
1 is an adder, 182 is a recording amplifier, 183 is a rotary transformer, 184 is a recording / reproducing head, 185 is a tape, 186 is a control signal generation circuit, and 187 is a fixed head.

Next, the operation will be described. The setting of the focus area and the detection of the skin color area in the skin color detection circuit 101 are the same as those in the twenty-first embodiment, and thus the description thereof is omitted.

The luminance signal output from the signal processing circuit 25,
The R-Y color difference signal and the B-Y color difference signal are added with a synchronizing signal to the luminance signal by the encoder 171 and are balanced-modulated and then added with a burst after the color difference signal is output. The luminance signal output from the encoder 171 is converted to a D / A converter
After being converted into an analog signal at 172, signal processing such as frequency shift adjustment, clamping, and pre-emphasis is performed by a luminance signal processing circuit 174.
The signal is M-modulated and output to the adder 181 via the HPF 176. The color difference signal output from the encoder 171 is D
After being converted to analog by the / A converter 173,
7, the gain of the color difference signal is adjusted so that the burst signal size becomes constant, and the burst emphasis circuit 178 is adjusted.
Increases the burst gain. The color difference signal output from the burst emphasis circuit 178 is converted to a low frequency band by the frequency low-frequency conversion circuit 179, and is output to the adder 181 via the LPF 180. The adder 181 combines the luminance signal and the color difference signal. Adder 181
The video signal output from the recording / reproducing head 184 via the recording amplifier 182 and the rotary transformer 183
Recorded at 185.

The fixed head 187 is provided on the control track located at the lower end of the tape 185 so that the recording / reproducing head 184 for recording / reproducing a video signal can accurately trace the video track on the tape 185 as shown in FIG. The control signal generated by the control signal generation circuit 186 is recorded.

Note that the algorithm in the microcomputer 31 is the same as the flowchart in FIG. When no flesh-tone area is detected in the video signal, and an “erroneous recording signal” is output to the control signal generation circuit 186 according to the flowchart shown in FIG. 72, the control signal generation circuit 186 generates a normal control signal and a rising edge of the signal. Are the same and have different duty ratios, so-called VI
Outputs SS signal. The VISS signal is recorded on the control track on the tape 185 by the fixed head 187.

(Embodiment 50) FIG. 79 is a block diagram showing a configuration of a color video camera (Embodiment 50).
In FIG. 79, portions denoted by the same reference numerals as those in FIG. 68 indicate the same or corresponding portions. Also, in FIG. 79, 91 is a memory, 92
Is an adder.

Next, the operation will be described. The basic operation is the same as that of the forty-fifth embodiment, and a description thereof will not be repeated. The output signal of the skin color detection circuit 101 is stored in a memory 91 and an adder.
Output to 92. When the output signal of the flesh color detection circuit 101 is input, the memory 91 stores a flesh color area for one field.
When the skin color area for one field is stored, the output signal of the skin color detection circuit 101 thereafter is not stored. The memory 91 outputs the stored output signal of the skin color detection circuit 101 to the adder 92. The adder 92 stores the output signal of the skin color detection circuit 101 into a memory.
Subtract 91 output signal.

For example, as shown in FIG. 5, when a photographer 51 fixes a video camera 52 on a tripod 53 and shoots himself by using a remote controller 49, the scene shown in FIG. Is taken. FIG. 80 (b) shows that a brown image signal of a “tree” having a high level of the luminance signal satisfies the skin color region shown in FIG.
FIG. 80 (a) is a diagram showing an output signal of the skin color detection circuit 101 at the time of photographing. However, the skin color region detected in FIG. 80 (b) is not a skin color region for recognizing the photographer 51 who is the main subject to be detected in the present embodiment. The signal shown in FIG. 80 (b) is stored in the memory 91. The memory 91 outputs the signal shown in FIG. Therefore, as shown in FIG. 80 (c), the output signal of the adder 92 is included in the video signal before recording by remote control as shown in FIG.
As long as there is no change in the video signal shown in (a), the skin color area is not detected from the output signal from the adder 92 via the data latch circuit 351.

FIG. 81 is a flowchart showing an algorithm in the microcomputer 31 in the present embodiment. Hereinafter, the operation will be described with reference to this flowchart. When the "recording signal" is input to the microcomputer 31 (step S11), it is determined whether or not there is a skin color area in the output signal of the adder 92 obtained by subtracting the output signal of the memory 91 from the output signal of the skin color detection circuit 101. Determine (Step S1
2). If there is no skin color area in the output signal of the adder 92, no "recording signal" is output to the output terminal 80 (step S1).
3). Therefore, even if a “recording signal” is transmitted from the remote controller 49, recording is not started. When a flesh color area is detected in the video signal from the output signal of the adder 92, the microcomputer 31 outputs a "recording signal" to the output terminal 80. The video camera starts recording the video signal being captured by the "recording signal" output from the microcomputer 31 (step S14). Also, if the skin color area is not detected in the output signal of the adder 92 after the start of recording (step S15: N
O), the microcomputer 31 outputs a "recording stop signal" (step S16). The video camera stops recording in response to a “recording stop signal”.

(Embodiment 51) FIG. 82 is a block diagram showing a configuration of a color video camera (Embodiment 51).
In FIG. 82, portions denoted by the same reference numerals as those in FIGS. 71 and 79 indicate the same or corresponding portions.

The flowchart in FIG. 83 shows the algorithm in the microcomputer 31 according to the present embodiment, and the steps having the same contents as those in the flowchart shown in FIG. 81 are denoted by the same step numbers. If there is no skin color area in the output signal of the adder 92 before the recording starts (step 1
2: NO), an “erroneous recording signal” is output to the output terminal 81. (Step 17). Therefore, even if a “recording signal” is transmitted from the remote controller 49, recording is not started. Also, if the skin color area is not detected in the output signal of the adder 92 after the start of recording (step 15: NO), the microcomputer
An "erroneous recording signal" is output from 31 to the output terminal 81 (step 18).

Here, it is assumed that a 5V, "High" signal is output from the microcomputer 31 to the output terminal 81 for the "wrong recording signal" output. The above signal is input to the light emitting diode 83 via the resistor 82, and the light emitting diode 83 emits light.
The “erroneous recording signal” is not limited to 5 V and “High”, but may be another voltage or another data signal.

(Embodiment 52) FIG. 84 is a block diagram showing a configuration of a color video camera (Embodiment 47).
In FIG. 84, portions denoted by the same reference numerals as those in FIGS. 73 and 79 indicate the same or corresponding portions. Next, the operation will be described. When no flesh-tone area is detected in the output signal of the adder 92, the "erroneous recording signal" according to the flowchart shown in FIG.
Is output to the buzzer transmission circuit 84. When the "erroneous recording signal" is input, the buzzer transmission circuit 84 transmits the buzzer 85. Note that the buzzer transmission circuit 84 and the buzzer 85 may be configured to generate an electronic sound.

(Embodiment 53) FIG. 85 is a block diagram showing a configuration of a color video camera (Embodiment 53).
In FIG. 84, portions denoted by the same reference numerals as those in FIGS. 74 and 79 indicate the same or corresponding portions. Next, the operation will be described. When no flesh-tone area is detected in the output signal of the adder 92, the "erroneous recording signal" according to the flowchart shown in FIG.
Is output to the transmission circuit 86. The following operation is the same as that of the forty-eighth embodiment, and a description thereof will be omitted.

(Embodiment 54) FIG. 86 is a block diagram showing a configuration of a color video camera (Embodiment 54).
In FIG. 86, portions denoted by the same reference numerals as those in FIGS. 77 and 79 indicate the same or corresponding portions. Next, the operation will be described. When no flesh-tone area is detected in the output signal of the adder 92, the "erroneous recording signal" according to the flowchart shown in FIG.
Is input from the microcomputer 31 to the control signal generation circuit 186. The following operation is the same as that of the forty-ninth embodiment, and a description thereof will not be repeated.

In the above embodiments 50 to 54, the memory
The video signal stored by 91 may be selectable by an external input signal. For example, an external terminal capable of determining a video signal to be stored by a photographer is provided, and when the photographer presses the external terminal, an external input signal is given to the memory 91, and the skin color at the time when the external input signal is given The output signal of the detection circuit 101 is stored in the memory 91.

(Embodiment 55) FIG. 87 is a block diagram showing a structure of a color video camera (Embodiment 55).
In FIG. 87, portions denoted by the same reference numerals as those in FIGS. 54 and 68 indicate the same or corresponding portions. In FIG. 87, reference numeral 93 denotes a window generation circuit, and 94 denotes a data select circuit.

Next, the operation will be described. The basic operation is the same as in the above-described thirty-third and forty-fifth embodiments, and a description thereof will be omitted. The microcomputer 31
The distance L to the subject and the magnification Z of the subject are calculated. The microcomputer 31 outputs a control signal to the window generating circuit 93 based on the calculated distance L and the magnification Z. The window generation circuit 93 outputs a window pulse for setting the W _{x, y} picture frame shown in FIG. 88 to the data selection circuit 94. Note that the size of the image frame determined by the window pulse output from the window generation circuit 93 is given by Equation 6.
As shown in FIG. 5, the distance varies depending on the distance L and the magnification Z.
The data select circuit 94 selects only the video signal within the size of the image frame satisfying Expression 7.

(Equation 7) W _{x, y} = W ₀ · Z / L where W _{0 is an} initial set value

The skin color detecting circuit 101 comprises a window generating circuit 93.
Only the flesh-colored area within the image frame determined by the above is detected. Therefore, as shown in FIG. 89, if the subject is located outside the image frame of W _{x, y} , the skin color area is not detected.

FIG. 70 is a flowchart showing an algorithm in the microcomputer 31 according to the present embodiment. The flowchart of FIG. 70 is the same as that of the forty-fifth embodiment, and a description thereof will be omitted. When there is no skin color area in the image frame W _{x, y} shown in FIG. 88, the recording is stopped by the “recording stop signal” output from the microcomputer 31 to the output terminal 80.

(Embodiment 56) FIG. 90 is a block diagram showing a configuration of a color video camera (Embodiment 56).
In FIG. 90, portions denoted by the same reference numerals as those in FIGS. 71 and 87 indicate the same or corresponding portions. Next, the operation will be described. As in the fifty-fifth embodiment, the skin color detection circuit 101
Detects the presence or absence of a skin color area in _{x, y} . And figure
According to the flowchart of 72, when there is no skin color area in the video signal in the image frame W _{x, y} , an “erroneous recording signal” is output to the output terminal 81. The following operation is the same as in the forty-sixth embodiment.

(Embodiment 57) FIG. 91 is a block diagram showing a configuration of a color video camera (Embodiment 57).
In FIG. 91, portions denoted by the same reference numerals as those in FIGS. 73 and 87 indicate the same or corresponding portions. Next, the operation will be described. As in the fifty-fifth embodiment, the skin color detection circuit 101
Detects the presence or absence of a skin color area in _{x, y} . And figure
According to the flowchart of 72, when there is no skin color area in the video signal in the image frame W _{x, y} , the “erroneous recording signal” is output to the buzzer transmission circuit 84. The following operation is the same as that of the forty-seventh embodiment.

(Embodiment 58) FIG. 92 is a block diagram showing a structure of a color video camera (Embodiment 58).
In FIG. 92, portions denoted by the same reference numerals as those in FIGS. 74 and 87 indicate the same or corresponding portions. Next, the operation will be described. As in the fifty-fifth embodiment, the skin color detection circuit 101
Detects the presence or absence of a skin color area in _{x, y} . And figure
According to the flow chart of 72, when there is no skin color area in the video signal in the image frame W _{x, y} , an “erroneous recording signal” is output to the transmission circuit 86. The following operation is the same as in the forty-eighth embodiment.

(Embodiment 59) FIG. 93 is a block diagram showing a configuration of a color video camera (Embodiment 59).
93, portions denoted by the same reference numerals as those in FIGS. 77 and 87 indicate the same or corresponding portions. Next, the operation will be described. As in the fifty-fifth embodiment, the skin color detection circuit 101
Detects the presence or absence of a skin color area in _{x, y} . And figure
According to the flow chart of 72, if there is no skin color area in the video signal in the image frame W _{x, y} , the “error recording signal” is output to the control signal generation circuit 186. The following operation is the same as in the forty-ninth embodiment.

In the above embodiments 49, 54 and 59, the output signal of the encoder 171 is output from the luminance signal processing circuit 174 to the H level.
The signal processing of the luminance signal is performed via the PF 176 and the ACC 17
Although the signal processing of the color difference signal has been performed through the LPF 180 from FIG. 7, the circuit configuration of the above circuit may be another signal processing circuit configuration. In these embodiments,
Although the example using the VISS signal as the detection signal is shown,
It goes without saying that the same effect can be obtained even with an ASS signal or a start signal of the deep recording method.

In the embodiments 45 to 59, the skin color detection circuit 101 of the second embodiment is used as a means for detecting the skin color area. However, the skin color detection circuit shown in the third and fourth embodiments is used. May be used. Further, instead of such a look-up table method, a color difference signal may be detected by limiting a flesh color area by a plurality of comparators.

Next, examples in which a human face is discriminated from the detected skin color area will be described as the following embodiments 60 to 67.

(Embodiment 60) FIG. 94 is a block diagram showing a configuration of a video signal processing apparatus (Embodiment 60) of the present invention. In FIG. 94, the portions denoted by the same reference numerals as those in FIG. 54 are the same. Or indicate a substantial part. In FIG. 94, reference numeral 95 denotes a correlation value calculation circuit.

FIG. 95 shows a specific configuration example of the correlation value calculation circuit 95.
Shown in In FIG. 95, 210 is an input terminal for inputting a horizontal range X from the microcomputer 31, 211 is an input terminal for inputting an output signal of the skin color detection circuit 101, and 212 is an input terminal for inputting a predetermined value K from the microcomputer 31. , 213 is an address generation circuit, 214, 215 are memories, 216
Is an EXOR element, 217 is a counter, 218 is a comparator, 219
, A data generation circuit; and 220, an output terminal for outputting a signal output from the data generation circuit 219 to the microcomputer 31.

Next, the operation will be described. The basic operations such as the setting of the focus area and the detection of the skin color area by the skin color detection circuit 101 are the same as those of the above-described embodiments, and therefore the description thereof is omitted. Hereinafter, the face determination operation will be described. The flowchart in FIG. 96 illustrates an algorithm for the microcomputer 31 to determine a human face area from a video signal. Hereinafter, description will be made with reference to the flowchart in FIG.

First, the microcomputer 31 sets the predetermined value K
Is output to the correlation value calculation circuit 95 (step S21). Next, the microcomputer 31 outputs the zoom lens from the control signals output to the zoom lens 44 and the focus lens 21.
44 and the position of the focus lens 21 are calculated, and the distance L to the subject and the zoom position Z are calculated (step S22,
S23). Based on the calculated distance L to the subject and the zoom position Z, the microcomputer 31 determines a horizontal range X for detecting the width of a person's face as shown in FIG. 97 by Expression 8 (step S24). Here, if Z is the zoom position at the wide end and ZT is the zoom position at the telephoto end, then Z
It is assumed that W.ltoreq.Z.ltoreq.ZT is satisfied and is proportional to the magnification from the image at the position of ZW. Xk is the zoom lens 44
Is the horizontal size of a standard human face at a reference distance in which the zoom position is at the wide end and the distance L to the subject is predetermined.

(Equation 8) X = X k · (Z / L)

The horizontal range X determined by the microcomputer 31 is output from the microcomputer 31 to the correlation value calculation circuit 95 (step S24).

The horizontal range X output from the microcomputer 31 is input to the memory 214 from the input terminal 210. The memory 214 stores data as shown in FIG. 97 as a data table. Here, XW is a predetermined value, one frame represents one pixel, a hatched area is "0", and other areas are "1". The memory 214 outputs data as shown in FIG. 97 by an LUT (look-up table) according to the input horizontal range X.

The signal output from the skin color detection circuit 101 is input to the memory 215, and the memory 215 stores one field of the skin color area. As shown in FIG. 17 (a), the signal output from the skin color detection circuit 101 is "1" in the detected skin color area (hatched area) and "0" in the other areas. The address generation circuit 213 outputs an address to the memory 215 so that the output signal of the skin color detection circuit 101 at predetermined detection points X1 to Xn is output from the memory 215 as shown in FIG.

FIG. 99 shows specific detection points for calculating the correlation value.
Shown in Memory 215 is in the detection position X _{1, 1} ~X _5,5, sequentially outputs the output signal of the skin color detection circuit 101 that has been stored. The address generation circuit 213 is
The address is output from the memory 214 so that the range XW for detecting a human face is repeatedly output in accordance with the signal of the detection position sequentially output from the memory 215. Memory 214
Outputs the data in the range defined in the horizontal direction shown in FIG. 97 repeatedly for one detection range (X _{i, j} ) in accordance with the address. In the case of the detection location shown in FIG. 99, Xw = 250. The output signal of the memory 214 and the output signal of the memory 215 are output to the counter 217 via the EXOR element 216,
The counter 217 integrates by the width of Xw to calculate the correlation value S. Equation 9 shows the correlation equation. This exclusive OR is shown in FIG.
In the detection portion shown, from top to bottom successively, as shown in FIG. 100, performed from left to right _{(X 1,1 X 1,2 ... X 1,5} X 2,1
X _2,2 ... X _5,4 X _5,5 ). As the correlation between the determined horizontal range shown in FIG. 97 and the horizontal range of the flesh-colored area increases, the correlation value S expressed by Expression 9 increases. counter
217, the correlation value S of each detected point
Are sequentially output to the comparator 218.

(Equation 9) S = ΣEXOR (i, j) where EXOR: exclusive OR

The comparator 218 compares the output signal S of the counter 217 with a predetermined value K input from the microcomputer 31. When the correlation value S is larger than the predetermined value K input from the microcomputer 31, a "High" signal is output. Is output to the data generation circuit 219. The data generating circuit 219 outputs data of the center position and size of the human face to the microcomputer 31 in accordance with the output signal of the comparator 218. For example, FIG. 17 (b)
Is input to the correlation value calculation circuit 95, the output signal of the comparator 218 is “High” only at the detection points X _2,1 and X _2,2 shown in FIG. 99, and all the other detection points are “ If "Low", the data generating circuit 219 outputs R (x, y) representing the center of the human face and r representing the size of the human face as shown in FIG. The microcomputer 31 inputs the output signal of the correlation value calculation circuit 95 (step S25), and determines that the area of the video signal represented by the input data is a human face (step S26).

The signal processing loop (S22 to S26) is
Repeat every field or every few fields. In addition,
In the memory 214 used in the correlation value calculation circuit 95, the hatched area is “1” in the horizontal range determined by the distance L to the subject and the zoom position Z of the zoom lens as shown in FIG. Can be realized by a circuit configuration for outputting a signal of “0”. Needless to say, the method of calculating the correlation value can also be realized by calculating the correlation values in order from left to right and from top to bottom as shown in FIG. Further, FIG. 96 shows a specific example of the detection location for obtaining the correlation value, but the detection location is not limited to this.

(Embodiment 61) In the above-described embodiment 60, the human face is determined based on the correlation value in the horizontal direction. However, the human face is determined based on the correlation value in the vertical direction. Can be done in a similar manner. Embodiment 61 is such an example. The circuit configuration including the correlation value calculation circuit 95 of the sixteenth embodiment is the same as that of the sixty embodiment.

The operation of the sixty-first embodiment is the same as that of the sixty-first embodiment.
It is considered the same as FIG. 103 showing the operation of the embodiment 61.
In the flowchart of (1), the range Y in the vertical direction for detecting the width of the face of a person is determined according to Expression 10 (step S27). Yk
Is the vertical size of a standard human face at a reference distance where the zoom position of the zoom lens 44 is at the wide end and the distance L to the subject is predetermined.

(Equation 10) Y = YK · (Z / L)

The output from the microcomputer 31
The range Y in the direct direction is input to the memory 214 from the input terminal 210.
Is done. The memory 214 stores data as shown in FIG.
Stored as a data table. Address generation circuit 213
Are predetermined detection points Y1 to Y as shown in FIG.
output the output signal of the skin color detection circuit 101 from the memory 215
The address is output to the memory 215 so as to perform the operation. Fig. 106
At the detection point as shown in FIG.
Is calculated. In the case of the detection location shown in FIG. 106, Yw = 100
It is. This logical disjunction corresponds to the detection location shown in FIG.
107, sequentially from top to bottom, from left to right, as shown in FIG.
To (Y_1,1Y_1,2... Y_1,8Y_2,1Y _2,2... Y_5,7Y
_5,8). When the correlation value S is larger than the predetermined value K,
The face is determined to be a human face. Note that the detection locations are shown in FIG.
As shown in the figure, the correlation value is calculated from top to bottom and from left to right.
You may.

(Embodiment 62) The circuit configuration of the embodiment 62 including the correlation value calculation circuit 95 is the same as that of the embodiment 60. The flowchart in FIG. 109 shows an algorithm for the microcomputer 31 of the 62nd embodiment to determine a human face region from a video signal. Below
This will be described along the flowchart of 109.

First, the microcomputer 31 sets the predetermined value K
Is output to the correlation value calculation circuit 95 (step S31). Next, the microcomputer 31 calculates the distance L to the subject and the zoom position Z (steps S32 and S33). Based on the calculated distance L and zoom position Z, the microcomputer 9 determines a range RA for detecting the width of the human face as shown in FIG. Rk is the distance L from the subject when the zoom position of the zoom lens 44 is at the wide end.
Is a standard human face size at a predetermined reference distance.

(Equation 11) RA = Rk · (Z / L)

The range RA determined by the microcomputer 31 is output from the microcomputer 31 to the correlation value calculation circuit 95 (step S34). The range R output from the microcomputer 31 is input to the memory 214 from the input terminal 210. The memory 214 stores the area R shown in FIG.
And RA are stored as data tables. memory
The area of RA changes according to the data input from the input terminal 210 according to the data in 214. Where XW, YW
Is a predetermined value, one frame represents one pixel, a hatched area is “0”, and other areas are “1”. The memory 214 outputs data as shown in FIG. 110 by an LUT (Look Up Table) method according to the input range RA.

FIG. 11 shows specific detection points for calculating the correlation value.
1, 112. The area P is a detection position for one field. The signal output from the skin color detection circuit 101 is stored in the memory 215
The memory 215 stores a flesh color area for one field as shown in FIG. Address generation circuit 213
Is a predetermined detection point P (x +
An address is output to the memory 215 so that the output signal of the skin color detection circuit 101 at (i, y + i) is output from the memory 215.

The address generating circuit 213 has a memory 214
The address is output from the memory 214 so that the range R for detecting a human face is repeatedly output in accordance with the signal of the detection location sequentially output from the memory 215. The memory 214 stores the data in the predetermined range shown in FIG. 110 for one detection range R (R '(x, y) to R' (x + i,
y + i)) is repeatedly output every time. The output signal of the memory 214 and the output signal of the memory 215 are output to the counter 217 via the EXOR element 216, and are output for one detection range (R '
(X, y) to R '(x + i, y + i)) are integrated to obtain a correlation value S. Equation 12 shows the correlation equation. This exclusive OR is sequentially detected from the top to the bottom, from the left to the right, as shown in FIG.
As shown in Fig. 4, it is determined from left to right and top to bottom. Figure
The higher the correlation between the range defined by 110 and one detection point R, the larger the correlation value S expressed by Expression 12 becomes. The correlation value S at each detection point calculated by the counter 217 is sequentially output to the comparator 218.

(Equation 12) S = ΣEXOR (P (i, j), R (i, j)) where EXOR: exclusive OR

The comparator 218 compares the output signal S of the counter 217 with a predetermined value K input from the microcomputer 31. When the correlation value S is larger than the predetermined value K input from the microcomputer 31, the comparator 218 outputs "High". The signal is output to data generation circuit 219. The data generation circuit 219 is a comparator 218
The data of the center position and the size of the human face are output to the microcomputer 31 in accordance with the output signal of.

Microcomputer 31 is a correlation value calculating circuit
An output signal 95 is input (step S35), and the area of the video signal represented by the input data is determined to be a human face (step S36). Such a signal processing loop (S
32 to S36) are repeated every several fields.

(Embodiment 63) FIG. 115 is a block diagram showing a configuration of a video signal processing apparatus (Embodiment 63) of the present invention. In FIG. 115, the portions denoted by the same reference numerals as in FIG. 94 are the same. Or indicate a substantial part. The skin color detection signal output from the skin color detection circuit 101 is stored in the memory 351 for one field. Memory storing one field of skin color area
Reference numeral 351 is controlled by the microcomputer 31 and outputs the stored data of the skin color area to the microcomputer 31. In Embodiment 63, a figure, a range, and a pattern for detecting a human face in a flesh color region by the microcomputer 31
When the skin color area detected by the skin color detection circuit 101 satisfies the shape of the figure, or the size, horizontal and vertical lengths of the two-dimensional area of the skin color area are predetermined. When the predetermined value is satisfied, the skin color area is determined to be a human face. The size of the figure, range, and length changes according to the distance L to the subject and the zoom position Z.

In the embodiments 60, 61, and 62, a correlation value calculation circuit 95 is provided to determine whether the skin color area satisfies the predetermined figure shape, and the correlation between the skin color area and the predetermined figure is obtained. A correlation value was calculated, and when the obtained correlation value was larger than a predetermined value, the skin color area was determined to be a human face.

The method for discriminating a human face from a skin color area is not limited to the above method. For example, R1, R shown in FIG.
2. The size of the flesh color area of R3 is the microcomputer 31
If it falls within the shaded area shown in FIG. Therefore, when the skin color area shown in FIG. 17A is detected, the skin color area of R1 is determined as a human face. FIG. 116 shows a flowchart of this embodiment in which the above method is realized.

The flow chart of FIG. 116 will be described. First, the microcomputer 9 calculates the distance L to the subject and the zoom position Z (steps S41 and S4).
2). A coefficient R that satisfies Equation 13 is determined according to the obtained result (step S43). RW is a standard human face size at a reference distance where the distance L to the subject is predetermined when the zoom position of the zoom lens 44 is at the wide end ZW.

(Equation 13) R = RW · (Z / L)

Next, g and h in FIG. 117 show a small area RS and a large area RB determined by the coefficient R. R S,
RB is obtained by Expressions 14 and 15 (Step S4).
Four).

(Equation 14) RS = k1 · R where k1 <1 (Equation 15) RB = k2 · R where k2> 1

If the size of the skin color region RC detected by the skin color detection circuit 101 satisfies the expression 16, RC is a human face (step S46). If Equation 16 is not satisfied, it is determined that RC is not a human face (step S4).
7).

(Equation 16) RS <RC <RB

FIG. 118 is a flowchart showing the procedure for determining the human face based on the two-dimensional size of the skin color region or the horizontal and vertical sizes of the skin color region. In FIG. 118, the same processes as those in FIG. 116 are denoted by the same step numbers. Equation 17 is obtained according to the obtained distance L and the zoom position Z.
Is determined (step S53). KW is a constant for a standard human face size at a predetermined reference distance L to the subject when the zoom position of the zoom lens 44 is at the wide end ZW.

(Equation 17) K = KW.multidot. (Z / L) Next, KS and KB are obtained by equations 18 and 19 (step S54).

(Equation 18) KS = k1 · K where k1 <1 (Equation 19) KB = k2 · K where k2> 1

The size Kc of the two-dimensional area of the skin color area detected by the skin color detection circuit 101 is obtained from the integrated value of each of the skin color areas R1, R2 and R3 shown in FIG. If this integrated value satisfies Expression 20, KC is a human face (step S56). If Expression 20 is not satisfied, it is determined that KC is not a human face (step S57).

(Equation 20) KS <KC <KB

(Embodiment 64) Circuit Configuration of Embodiment 64
Is the same as that in Embodiment 63 (FIG. 115). Shown in Figure 119
The distance to the subject by the microcomputer 31
Value w according to_NAnd w_W(W_N<W_W) Is set. Figure
The hatched area shown in FIG.
This is the output of the skin color detection circuit 101 in the case of shadowing,
Is the same as The microcomputer 31 is shown in FIG.
Detected by the skin color detection circuit 101
Horizontal value (size) w of skin color area₁Is w_W> W ₁>
w_NIs satisfied, this skin tone area is regarded as a human face
To judge. On the other hand, the skin color detection circuit 101
W detected as a color area_TwoAnd w_ThreeMeets the above conditions
Microcomputer 31 is a human face
Is not detected.

Note that w _N and w _W are distances L to the subject.
Is smaller (closer), larger as the distance to the subject is larger (farther), and is smaller as the magnification is larger. The difference between w _W and w _N , that is, the range defined by both is larger. On the contrary, the above range is set to be smaller as the magnification becomes smaller.

(Embodiment 65) The circuit configuration of the embodiment 65 is the same as that of the embodiment 63 (FIG. 115). As shown in FIG. 121, the microcomputer 31 _sets the values of w _H1 and w _H2 (w _H1 <w _H2 ) in the horizontal direction and the values of w _V1 and w _V2 (w _V1 < w _V2 ) is set. As shown in FIG. 122, the horizontal value (size) w _{0 of} the skin color area detected by the skin color detection circuit 101 is shown.
And the value w _{1 in the} vertical direction is w _H2 > w ₀ > w _H1 and w _V2
If> w ₁ > w _V1 is satisfied, the microcomputer 31 determines that the skin color area detected by the skin color detection circuit 101 is a human face.

Note that w_H1, W_H2(W_H1<W_H2)as well as
w_V1, W_V2(W_V1<W_V2) Indicates that the distance to the subject is short.
The distance to the subject is far so that
The smaller the size, the larger the magnification
When it comes_H2And w_H1, And w _V2And w_V1The difference between
The range specified by both is large, and conversely the magnification is
Make settings so that the above range becomes smaller as the size decreases.
You.

(Embodiment 66) The circuit configuration of the embodiment 66 is the same as that of the embodiment 63 (FIG. 115). Depending on the distance to the subject calculated by the microcomputer 31, as shown with hatching in FIG. 117,
A detection range of a predetermined size is set. Also,
In accordance with the distance to the subject, an image frame having a predetermined size is set as shown by reference numeral i in FIG. The flesh-tone area detected by the flesh-tone detecting circuit 101 exists in the image frame i shown in FIG.
If the relationship with the range for detecting a human face indicated by hatching in FIG. 117 satisfies the same condition as in the sixty-third embodiment, the microcomputer 31 determines that the human face is a human face.

Note that the image frame i shown in FIG. 123 increases as the distance to the subject decreases, decreases as the distance to the subject increases, and as the enlargement magnification increases, the hatching in FIG. The range indicated by is also set to be large, and the above range is set to be small as the magnification is reduced.

(Embodiment 67) The circuit configuration of the embodiment 67 is the same as that of the embodiment 63 (FIG. 115). Depending on the distance to the subject calculated by the microcomputer 31, as shown with hatching in FIG. 117,
A detection range of a predetermined size is set. The microcomputer 31 has the same relationship with the range of detecting a human face shown by hatching in FIG. 117 from among the plurality of skin color regions detected by the skin color detection circuit 101 as in Embodiment 63. A flesh-colored area that has a high correlation between the size of the flesh-colored area and the range in which a human face is detected is determined to be a human face.

For example, the value of the flesh-tone area detected by the flesh-tone detecting circuit 101 is similarly set to 1 within the range for detecting a human face.
And 0 outside the above range. Then, the microcomputer 31 obtains the value of S in Expression 21 for each of a plurality of skin color regions as shown in FIG. 124, and determines that the skin color region having the highest S value is a human face.

(Equation 21) S = Σw _{x, y} · w _{H, V} where w _{x, y} : skin color area w _{H, V} : range for detecting human face

[0302] The above equation 21 for obtaining the correlation is not limited to this, but may be another equation. In addition, the range for detecting a human face indicated by hatching in FIG. 117 increases as the distance to the subject decreases, decreases as the distance to the subject increases, and the range increases as the magnification increases. It is set so that it becomes larger and becomes smaller as the magnification becomes smaller.

As described above, in the embodiments 60 to 67, the face of the main subject, which is the main subject, can be accurately determined from the detected skin color region with a simple circuit configuration regardless of the size of _the subject and the distance to the subject. can do.

Next, as described above, the human face is discriminated from the detected skin color area, and the luminance signal,
The following embodiments are examples of changing the color difference signal, the gain of the aperture correction signal, and the frequency characteristic of the aperture correction signal.
This will be described at 68 to 72.

(Embodiment 68) FIG. 125 is a block diagram showing a configuration of a video signal processing apparatus (Embodiment 68) of the present invention. In FIG. 125, the portions denoted by the same reference numerals as those in FIG. Show the part. In FIG. 125, reference numeral 96 denotes a delay circuit, 97 denotes a data select circuit, and 111 and 112 denote gain control circuits.

Next, the operation will be described. The setting of the focus area, the control of the zoom lens 44, and the like are the same as in the above-described embodiment. The skin color detection circuit 101 detects a skin color area from the video signal, and the correlation value calculation circuit 95 and the microcomputer 31 determine a human face from the detected skin color area. The operation up to this point is the same as that of the sixtieth embodiment.

The microcomputer 31 outputs data indicating the center position of the determined human face area and the size of the face to the data select circuit 97. Data select circuit 97
In the skin color detection signal output from the skin color detection circuit 101, only the skin color area determined to be a human face by the data input from the microcomputer 31 is output to the gain control circuit 111 and the gain control circuit 112. multiply. The luminance signal, the RY color difference signal, and the BY color difference signal output from the signal processing circuit 26 are output to the delay circuit 96. The delay circuit 96 delays the input luminance signal, RY color difference signal, and BY color difference signal by the time required for the correlation value calculation circuit 95 and the microcomputer 31 to determine a human face.

The gain control circuit 111 has a data select circuit 97
The gain control circuit 112 increases the gain of the RY color difference signal in response to the human face detection signal input from the CPU, and decreases the gain of the BY color difference signal in accordance with the human face detection signal. According to the above method, the gain of the color difference signal is changed only in the human face region, and only the color difference signal in the flesh color region of the human face can be non-linearly converted from a to b as shown in FIG. Therefore, the color correction based on the memory color can be performed without affecting the skin color of the human face on the color of other areas.

In the above embodiment, the skin color detection circuit 101 of the second embodiment is used, but the skin color detection circuit 201 of the third embodiment (shown in FIG. 18) may be used. In this case, the output signal of the comparator 106 is output to the correlation value calculation circuit 95 as a signal for determining a human face, and the output signal of the slice circuit 109 is output to the data selection circuit 97 as a skin color detection signal. This way,
The color correction at the boundary between the skin color area (human face area) and the other areas is performed smoothly.

(Embodiment 69) FIG. 126 is a block diagram showing a configuration of a video signal processing apparatus (Embodiment 69) of the present invention. In FIG. 126, the portions denoted by the same reference numerals as those in FIG. Show the part. In FIG. 126, 115
Is a gain control circuit. Next, the operation will be described.
As in the embodiment 68, the data select circuit 97 sets a gate so that only the skin color area determined as a human face in the skin color detection signal output from the skin color detection circuit 101 is output to the gain control circuit 115. Multiply. The luminance signal, the RY color difference signal, and the BY color difference signal output from the signal processing circuit 26 are output to the delay circuit 96. The gain control circuit 115 responds to a human face detection signal input from the data selection circuit 97,
The gain of the luminance signal delayed by the delay circuit 96 is increased. As a result, it is possible to increase the brightness only in the area of the human face.

(Embodiment 70) FIG. 127 is a block diagram showing a configuration of a video signal processing apparatus (Embodiment 70) of the present invention. In FIG. 127, the portions denoted by the same reference numerals as those in FIG. Show the part. In FIG. 127, 190
Is an aperture creation circuit, 118 is a gain control circuit, and 98 is an adder. FIG. 128 shows the configuration of the aperture creating circuit 190. In FIG. 128, 310 is a luminance signal input terminal, 311 and 3
12 is a one-line memory, 313 is an adder for adding the luminance signal input from the input terminal 310 and the two-line delayed luminance signal output from the one-line memory 312, and 314 is a band that determines the frequency characteristics of the aperture. Pass filter, 31
5 is a gain control circuit, 316 is an adder, and 317 is an aperture signal output terminal.

Next, the operation will be described. The luminance signal input from the luminance signal input terminal 310 of the aperture creating circuit 190 is added by the adder 313 to the luminance signal delayed by two horizontal scanning periods. The luminance signal output from the adder 313 is subtracted by the adder 316 from the luminance signal delayed by one horizontal scanning period to form an aperture correction signal in the vertical scanning direction. The output signal of the one-line memory 311 is output to the band-pass filter 314. The band pass filter 314 extracts a predetermined frequency component in the horizontal direction, controls the gain by a gain control circuit 315, and forms an aperture correction signal in the horizontal scanning direction. The aperture correction signal in the horizontal scanning direction is added to the aperture correction signal in the vertical scanning direction by the adder 316,
The signal is output to the delay circuit 96 from the aperture signal output terminal. The gain control circuit 118 controls the gain of the aperture correction signal output from the delay circuit 96. The adder 98 adds the aperture control signal after the gain control and the luminance signal. As in the embodiment 68, the data select circuit 97 has a gate so that only the skin color area determined to be a human face in the skin color detection signal output from the skin color detection circuit 101 is output to the gain control circuit 118. Multiply. The gain control circuit 118 lowers the gain of the aperture correction signal delayed by the delay circuit 96 in accordance with the human face detection signal input from the data select circuit 97. Thus, by reducing the gain of the aperture correction signal only in the area of the human face, it appears that the emphasized wrinkles and breakouts have been removed.

(Embodiment 71) FIG. 129 is a block diagram showing a configuration of a video signal processing apparatus (Embodiment 71) of the present invention. In FIG. Show the part. Also, in FIG.
Is an aperture creation circuit, 191 is an adder, 192 is a low-pass filter (LPF), and 193 is a mixing circuit. Next, the operation will be described. The aperture creation circuit 190 creates an aperture correction signal from the luminance signal and outputs it to the adder 191. The adder 191 adds the aperture correction signal and the luminance signal and outputs the result to the delay circuit 96. The LPF 192 removes the high frequency component of the luminance signal and outputs the result to the mixing circuit 193.
The mixing circuit 193 changes the mixing ratio based on the signal from the data select circuit 97 and mixes the output of the LPF and the output of the delay circuit 96. As in the embodiment 68, the data select circuit 97 gates such that only the skin color area determined to be a human face in the skin color detection signal output from the skin color detection circuit 101 is output to the mixing circuit 193. . When the skin color detection signal, which is a human face, is input to the mixing circuit 193, the gain of the output signal of the LPF 192 is increased, and the delay circuit
Reduce the gain of the output signal from 96 and mix both signals.
By doing so, it is possible to reduce the gain of the high frequency component of the luminance signal only in the human face region.

(Embodiment 72) FIG. 130 is a block diagram showing a configuration of a video signal processing apparatus (Embodiment 72) of the present invention. In FIG. 130, the portions denoted by the same reference numerals as those in FIG. Show the part. Also, in FIG.
Is an aperture correction circuit, and 194 is an adder. The internal configuration of the aperture correction circuit 120 for changing the frequency characteristic of the aperture correction signal is the same as that shown in FIG.

Next, the operation will be described. Embodiment
Similarly to 68, the data select circuit 97 is
In the skin color detection signal output from 1, a gate is applied so that only the skin color area determined to be a human face is output to the aperture correction circuit 120. Then, when the skin color detection signal, which is a human face, is input to the aperture correction circuit 120, the frequency characteristics of the aperture correction signal are changed. by this,
The frequency characteristic of the aperture correction signal can be changed only in the skin color region of the human face. Therefore, it is possible to obtain natural wrinkles instead of wrinkles unnaturally enhanced by the signal processing of the camera. Next, a human face is determined from the detected skin color area, and according to the determined human face area, setting of an auto focus area, iris control, automatic gain control,
An example in which a photometric area such as an automatic shutter is set will be described in the following embodiments 73 to 94.

(Embodiment 73) FIG. 131 is a block diagram showing a configuration of a video signal processing apparatus (Embodiment 73) of the present invention. In FIG. 131, portions denoted by the same reference numerals as in FIG. Show the part. Next, the operation will be described. Based on the size of the skin color area detected by the skin color detection circuit 101, the area of the human face is determined according to the 62nd embodiment. The microcomputer 31 outputs a control signal to the window generation circuit 27 so that the skin color area detected as a human face becomes a detection area for autofocus control. The window generation circuit 27 is a skin color detection circuit 10
The skin color detection signal input from
According to the control signal given from 31, only the human face region is output to the data selector circuit 28 as a window pulse. By such processing, the face of a person, which is a main subject, becomes a focus area for autofocusing, and thus an optimal image always focused on the face of the person is obtained.

(Embodiment 74) FIG. 132 is a block diagram showing a configuration of a video signal processing apparatus (Embodiment 74) of the present invention. In FIG. 132, the same reference numerals as in FIGS. Indicates the same or corresponding parts. Next, the operation will be described. The basic control of the iris 39 is the same as in the twenty-second embodiment, and a description thereof will be omitted. Embodiment
Similarly to 73, the microcomputer 31 discriminates the area of the human face and sets the window generation circuit so that the skin color area detected as the human face becomes the photometric area of the iris 39.
Outputs a control signal to 27. The window generating circuit 27 outputs only a human face region as a window pulse to the data selector circuit 28 based on a skin color detection signal input from the skin color detecting circuit 101 by a control signal supplied from the microcomputer 31. By such processing, the face of a person, which is a main subject, becomes a photometric area for iris control, so that an optimum image always focused on the face of the person can be obtained.

(Embodiment 75) FIG. 133 is a block diagram showing a configuration of a video signal processing apparatus (Embodiment 75) of the present invention. In FIG. 133, the portions denoted by the same reference numerals as in FIGS. Indicates the same or corresponding parts. Next, the operation will be described. For basic control of automatic gain of video signal,
Since it is the same as the twenty-third embodiment, its description is omitted. As in the seventy-third embodiment, the microcomputer 31 determines the area of the face of the person, and controls the window generation circuit 27 so that the skin color area detected as the face of the person becomes the photometric area of the AGC 24. Outputs control signal. By such processing, the face of a person, which is a main subject, becomes a photometric area for automatic gain control, so that an image in which optimal gain control is always performed on the face of a person can be obtained.

(Embodiment 76) FIG. 134 is a block diagram showing the configuration of a video signal processing apparatus (Embodiment 76) of the present invention. In FIG. 134, the portions denoted by the same reference numerals as in FIGS. Indicates the same or corresponding parts. Next, the operation will be described. The basic control of the automatic shutter speed adjustment is the same as that in the twenty-fourth embodiment, and the description is omitted. Similarly to the embodiment 73, the microcomputer 31
Determines a human face area, and outputs a control signal to the window generating circuit 27 so that the flesh color area detected as a human face becomes a photometric area used for automatic electronic shutter speed adjustment. By such processing, the face of a person, which is a main subject, becomes a photometric area for automatic electronic shutter speed adjustment, so that an image in which optimal exposure control is always performed on the face of a person is obtained.

(Embodiment 77) FIG. 135 is a block diagram showing the configuration of a video signal processing apparatus (Embodiment 77) of the present invention. In FIG. 135, the portions denoted by the same reference numerals as those in FIG. Show the part. In addition, in FIG.
Is a low-pass filter (LPF), and 352 is a slice circuit.

Next, the operation will be described. The skin color detection signal output from the skin color detection circuit 101 is used as a correlation value calculation circuit 95.
And LPF195. According to the embodiment 62, a human face is detected from the skin color detection signal output to the correlation value calculating circuit 95. FIG. 136 (a) is a waveform diagram showing a signal detected by the skin color detection circuit 101, and FIG. 136 (b) is a waveform diagram of FIG.
FIG. 9 is a waveform diagram of an output signal after the signal of (a) has passed through an LPF 195. The signal shown in FIG. 136 (b) output from the LPF 195 is input to the slice circuit 352. Slice circuit 35
2 slices the input signal by the threshold value THf input from the microcomputer 31. The LPF 195 and the slice circuit 352 perform the same operation in the vertical scanning direction.
In the signal of FIG. 136 (b), the skin color area of the signal smaller than the threshold value THf is set as the detection area of the autofocus control. The auto focus control detection area that satisfies the above conditions is shown in the figure.
137 is a range within the frame indicated by reference numeral e.
In FIG. 137, the hatched area is the skin color detection circuit.
The output result of 101 is shown.

The threshold value THf is determined according to the distance to the subject and the magnification. When the distance to the subject is long, the threshold value THf becomes large, and when the distance to the subject is short, the threshold value THf becomes small. Also, the threshold value THf increases as the magnification ratio decreases, and the threshold value THf decreases as the magnification ratio increases. The area indicated by reference numeral e in FIGS. 138 and 139 is a diagram showing the detection area of the auto focus control. The area indicated by reference numeral e in FIG. 138 is a focus area when the distance to the subject is long, and the area indicated by reference numeral e in FIG. 139 is the focus area when the distance to the subject is short. Area. Autofocus control is performed by such an area.
The following operation is the same as that of the seventy-third embodiment.

(Embodiment 78) FIG. 140 is a block diagram showing the structure of a video signal processing apparatus (Embodiment 78) of the present invention. In FIG. 140, the portions denoted by the same reference numerals as those in FIG. Show the part. In FIG. 140, 195
Is a low-pass filter (LPF), and 352 is a slice circuit.

Next, the operation will be described. In the signal of FIG. 136 (b), the flesh color area of the signal larger than the threshold value THe is set as the iris photometry area. The above area corresponds to f shown in FIG.
Area within the frame. The threshold value THe changes according to the distance to the subject and the zoom position. When the distance to the subject is long, the value THe is small, and when the distance to the subject is short, the threshold value THe is large. The threshold value THe decreases as the enlargement factor decreases, and the threshold value THe increases as the enlargement factor increases. The area indicated by the reference numeral f in FIGS. 141 and 142 is a view showing the photometric area of the iris. The area indicated by reference numeral f in FIG. 141 is a photometry area when the distance to the subject is long, and the area indicated by reference numeral f in FIG. 142 is the photometry area when the distance to the subject is short. Area. The following operation is an embodiment
Same as 74.

(Embodiment 79) FIG. 143 is a block diagram showing a configuration of a video signal processing apparatus (Embodiment 79) of the present invention. In FIG. 143, the same reference numerals as in FIG. 133 denote the same or corresponding parts. Show the part. In FIG. 143, 195
Is a low-pass filter (LPF), and 352 is a slice circuit. Next, the operation will be described. In the signal of FIG. 136 (b), the flesh-tone area of the signal larger than the threshold value THe is set as the photometric area of the automatic gain control. The above-mentioned area is an area within the frame of f shown in FIG. When the distance to the subject is long or the magnification is small, the value THe becomes small and the photometric area becomes as shown in FIG. 141.When the distance to the subject is short or the magnification is large, the threshold value THe becomes large. The photometric area is as shown in FIG. The following operation is an embodiment
Same as 75.

(Embodiment 80) FIG. 144 is a block diagram showing the structure of a video signal processing apparatus (Embodiment 80) of the present invention. In FIG. 144, the same reference numerals as in FIG. Show the part. In FIG. 144, 195
Is a low-pass filter (LPF), and 352 is a slice circuit. Next, the operation will be described. In the signal of FIG. 136 (b), a flesh-tone area of a signal larger than the threshold value THe is set as a photometric area for automatic electronic shutter speed adjustment. The above-mentioned area is an area within the frame of f shown in FIG. When the distance to the subject is long or the magnification is small, the value THe becomes small and the photometric area becomes as shown in FIG. 141.When the distance to the subject is short or the magnification is large, the threshold value THe becomes large. The photometric area is as shown in FIG. The following operation is the same as that of the embodiment 76.

(Embodiment 81) The structure of the embodiment 81 is the same as that of the embodiment 73 (FIG. 131). Next, the operation will be described. FIG. 145 (a) is a waveform diagram of a signal detected by the skin color detection circuit 101. The microcomputer 31 outputs the value of w according to the distance to the subject and the magnification to the window generation circuit 27. The window generation circuit 27 has a field memory therein in the present embodiment, and stores the skin color detection signal output from the skin color detection circuit 101 for one field. The window generation circuit 27 adds the value of w to the skin color detection signal of only the human face area determined by the microcomputer 31, and outputs the waveform of FIG. 145 (b) to the data selection circuit 28 as a window pulse.
The signal area in FIG. 145 (b) is the detection area for the autofocus control. The area represented by FIG. 145 (b) is the area within the frame indicated by reference numeral e in FIG. In FIG. 137, the hatched area indicates the output result of the skin color detection circuit 101.

It is also possible to change the width w added to the above-mentioned skin color area according to the distance to the subject and the zoom position. That is, the added width w decreases as the distance to the subject increases, and the added width w increases as the distance to the subject decreases. Further, the width w to be added is reduced as the enlargement magnification is reduced, and the width w is added as the enlargement magnification is increased.
To increase. When the width w added to the skin color area is variable, the area shown in FIG. 145 (b) is indicated by reference numeral e in FIGS. 138 and 139. The following operation is the same as that of the seventy-third embodiment.

(Embodiment 82) The structure of the embodiment 82 is the same as that of the embodiment 74 (FIG. 132). Next, the operation will be described. FIG. 146 (a) is a waveform diagram of a signal detected by the skin color detection circuit 101. The microcomputer 31 outputs the value of w according to the distance to the subject and the magnification to the window generation circuit 27. The window generation circuit 27 has a field memory therein in the present embodiment, and stores the skin color detection signal output from the skin color detection circuit 101 for one field. The window generation circuit 27 subtracts the value of w from the skin color detection signal of only the human face area determined by the microcomputer 31, and outputs the waveform of FIG. 146 (b) to the data selection circuit 37 as a window pulse. The signal area in FIG. 146 (b) is the iris photometry area. The area represented by FIG. 146 (b) is the area within the frame indicated by reference numeral f in FIG. Further, the width w subtracted from the above-described skin color area can be changed according to the distance to the subject and the zoom position. That is, the width w to be subtracted is reduced as the distance to the subject increases, and the width w to be subtracted is increased as the distance to the subject decreases. Further, the width w to be subtracted is reduced as the enlargement magnification is reduced, and the width w to be subtracted is increased as the enlargement magnification is increased. Width w subtracted from skin color area
146 (b) is indicated by the reference numeral f in FIGS. 138 and 139 when is made variable. The following operation is the same as that of the 74th embodiment.

(Embodiment 83) The structure of the embodiment 83 is the same as that of the embodiment 75 (FIG. 133). Next, the operation will be described. As in Embodiment 82, the signal area in FIG. 146 (b) is set as a photometry area for automatic gain control. When w is made variable, the setting of w is the same as that in the embodiment 82.
The following operation is the same as in the seventy-fifth embodiment.

(Embodiment 84) The structure of the embodiment 84 is the same as that of the embodiment 76 (FIG. 134). Next, the operation will be described. As in the embodiment 82, the signal area in FIG. 146 (b) is set as a photometry area for automatic electronic shutter speed adjustment. The setting of w when w is variable is described in the embodiment.
Same as 82. The following operation is the same as that of the embodiment 76.

(Embodiment 85) FIG. 147 is a block diagram showing a configuration of a color video camera (Embodiment 85) of the present invention. In FIG. 147, portions denoted by the same reference numerals as those in FIGS. 68 and 94 are the same. Or indicate a substantial part. Next, the operation will be described. Correlation value calculation circuit 95 and microcomputer
Numeral 31 identifies a human face from the skin color area detected by the skin color detection circuit 101. This determination operation is the same as that in the 62nd embodiment, and a description thereof will be omitted. When the human face is not determined, the video signal is not recorded.

[0333] The flowchart in Fig. 148 shows the algorithm of the present embodiment, and the same processes as those in the flowchart in Fig. 70 are denoted by the same step numbers.
When the "recording signal" is input (step S1), the microcomputer 31 determines whether or not the output signal of the correlation value calculation circuit 95 is "High", that is, there is a human face in the video signal being captured. It is determined whether or not this is the case (step S61). If there is no human face in the video signal, no "recording signal" is output (step S3), and recording does not start. When the recording is started (step S4), it is determined whether or not there is a human face in the video signal after the start of the recording (step S6).
2) If no human face is detected in the video signal, the microcomputer 31 outputs a "recording stop signal" (step S6), and the captured video signal is not recorded.
Other operations are similar to those in the forty-fifth embodiment, and a detailed description thereof will be omitted.

(Embodiment 86) FIG. 149 is a block diagram showing the structure of a color video camera (Embodiment 86) of the present invention. In FIG. 149, the portions denoted by the same reference numerals as in FIGS. 71 and 94 are the same. Or indicate a substantial part. Next, the operation will be described. As in Embodiment 85, when the human face is determined from the skin color area, and when the human face is not determined, an “erroneous recording signal” is output so as to inform the photographer of the fact. Has become.

The flowchart of FIG. 150 shows the algorithm of the present embodiment, and the same processes as those of the flowcharts of FIGS. 72 and 148 are denoted by the same step numbers. Before and after the start of recording, it is determined whether or not there is a human face in the video signal (steps S61 and S61).
62) If not, an "erroneous recording signal" is output (steps S7, S8). Other operations including the light emitting operation of the light emitting diode 83 conform to the forty-sixth embodiment, and a detailed description thereof will be omitted.

(Embodiment 87) FIG. 151 is a block diagram showing a configuration of a color video camera (Embodiment 87) of the present invention. In FIG. 151, the parts denoted by the same reference numerals as those in FIGS. 73 and 94 are the same. Or indicate a substantial part. Next, the operation will be described. When the "erroneous recording signal" is output to the buzzer transmission circuit 84 according to the flowchart of FIG. 150, the buzzer 85 is transmitted. Other operations including this operation are described in Embodiment 47.
Therefore, the detailed description is omitted.

(Embodiment 88) FIG. 152 is a block diagram showing the structure of a color video camera (Embodiment 88) of the present invention. In FIG. 152, the portions denoted by the same reference numerals as those in FIGS. 74 and 94 are the same. Or indicate a substantial part. Next, the operation will be described. According to the flowchart of FIG. 150, the “erroneous recording signal” is output to the transmission circuit 86. Other operations including the subsequent operations are in accordance with the forty-eighth embodiment, and detailed description thereof will be omitted. The structure of the remote control 49 is the same as that of Embodiment 48 (FIG. 75).
Or it is the same as FIG. 76).

(Embodiment 89) FIG. 153 is a block diagram showing a configuration of a color video camera (Embodiment 89) of the present invention. In FIG. 153, the portions denoted by the same reference numerals as those in FIGS. 77 and 94 are the same. Or indicate a substantial part. Next, the operation will be described. According to the flowchart of FIG. 150, similarly to the forty-ninth embodiment, when the “erroneous recording signal” is output, the VIS
A detection signal such as an S signal is recorded on a control track (see FIG. 78) on the tape 185. Other operations are in the embodiment.
Since it conforms to 49, its detailed description is omitted.

(Embodiment 90) FIG. 154 is a block diagram showing a configuration of a color video camera (Embodiment 90) of the present invention. In FIG. 154, portions denoted by the same reference numerals as in FIGS. 87 and 147 are the same. Or indicate a substantial part. Next, the operation will be described. As in the fifty-fifth embodiment, the window generating circuit 93 outputs a window pulse for setting the Wx, y picture frame (see FIG. 88) to the data select circuit 94, and at a position outside the Wx, y picture frame. If there is a subject (see FIG. 89), the person's face is not determined. The algorithm of the present embodiment is the same as that of Embodiment 84 (FIG. 148).

(Embodiment 91) FIG. 155 is a block diagram showing the structure of a color video camera (Embodiment 91) of the present invention. In FIG. 155, the portions denoted by the same reference numerals as those in FIGS. 90 and 149 are the same. Or indicate a substantial part. Next, the operation will be described. Similarly to the embodiment 90, the set image frame Wx,
If the subject is outside of y, the person's face is not identified. The following operation is the same as in the eighty-eighth embodiment.

(Embodiment 92) FIG. 156 is a block diagram showing a configuration of a color video camera (Embodiment 92) of the present invention. In FIG. 156, portions denoted by the same reference numerals as in FIGS. Or indicate a substantial part. Next, the operation will be described. Similarly to the embodiment 90, the set image frame Wx,
If the subject is outside of y, the person's face is not identified. The following operation is the same as that of the embodiment 87.

(Embodiment 93) FIG. 157 is a block diagram showing the structure of a color video camera (Embodiment 93) of the present invention. In FIG. 157, the portions denoted by the same reference numerals as those in FIGS. Or indicate a substantial part. Next, the operation will be described. Similarly to the embodiment 90, the set image frame Wx,
If the subject is outside of y, the person's face is not identified. The following operation is the same as that of the embodiment 88.

(Embodiment 94) FIG. 158 is a block diagram showing a configuration of a color video camera (Embodiment 94) of the present invention. In FIG. 158, the same reference numerals as in FIGS. 93 and 153 denote the same parts. Or indicate a substantial part. Next, the operation will be described. Similarly to the embodiment 90, the set image frame Wx,
If the subject is outside of y, the person's face is not identified. The following operation is the same as that of the embodiment 89. The method of determining a human face used in the embodiments 73 to 94 is not limited to the embodiment 60, but may be the methods of the embodiments 55 to 59 and 61 to 67.

(Embodiment 95) FIG. 159 is a block diagram showing the structure of an image synthesizing apparatus for a color video camera according to the present invention (Embodiment 95). In FIG. 159, 54 is a lens,
55 is an image sensor, 56 is a process circuit, 57 is an encoder circuit, 58 is a synchronization circuit, 59 is a NOT circuit, 60 and 61 are gate circuits, 62 is a synthesis circuit, and 225 is a lookup table (LU).
T), 226 and 227 are multipliers, and 228 is a comparison circuit.

Next, the operation will be described. When the light image of the subject is formed on the image sensor 55 through the lens 54, an electric signal having a value corresponding to the brightness is output, and the process circuit 56 converts the signal into a Y signal, an RY color difference signal, and a BY color difference signal. It is the same as the conventional example up to the point where it is converted and processed by the encoder circuit 57 into a video image signal. The RY color difference signal and the BY color difference signal are input to the LUT 225, and the address of the LUT 225 is generated according to these signals. LU
In T225, data of a table as shown in FIG. 160 is written. In this table data, numerical values are written only in the area of the specific background color, and the other areas are "0",
This value corresponds to the color density. The area and the numerical value are written corresponding to a specific hue of a preset background color, and a value corresponding to the address of the input color difference signal is output.

The output of LUT 225 is input to comparison circuit 228. On the other hand, the Y signal is input to multipliers 226 and 227, multiplied by coefficients M1 and M2, and input to comparison circuit 228. The comparison circuit 228 compares the outputs of the multipliers 226 and 227, that is, whether or not the output of the LUT 225 is within a range limited between two values obtained by multiplying the Y signal by the coefficients M1 and M2. Output as For example, the coefficient M of the multipliers 226 and 227
When 1,2 is 1/2 and 1/8, in the table of Fig. 160,
If the output of the LUT 225 is within the range of 1/2 to 1/8 of the Y signal level, it is detected as a background color and a keying signal is output. For example, when the Y signal level is 14, the limited range is 7-1, the range surrounded by the solid line in FIG. 160 is the background color area, and the keying signal is output in response to the input in this range. You.

The background image signal is output from the synchronization circuit 58 to the gate circuit 61 in synchronization with the video signal. Gate circuit 60
Then, the background portion is masked from the video signal from the encoder circuit 57 by the keying signal from the comparison circuit 228, and the range of the subject is extracted and output to the synthesis circuit 62. On the other hand, in the gate circuit 61, the subject portion is masked from the background image signal from the synchronization circuit 58 by the inverted signal of the keying signal from the NOT circuit 59, and the background range is extracted and output to the synthesis circuit 62. The outputs of the gate circuits 60 and 61 are synthesized by the synthesizing circuit 62 and output as a synthesized video output.

(Embodiment 96) FIG. 161 is a block diagram showing the structure of an image synthesizing apparatus for a color video camera (Embodiment 96) according to the present invention. In FIG. 161, portions denoted by the same reference numerals as those in FIG. 159 indicate the same portions, and thus description thereof will be omitted. In FIG. 161, 234 is an LU.
This is a table data setting terminal for setting table data in T225.
The table data of T225 can be rewritten from outside. Next, the operation will be described. In the LUT 225 in the present embodiment, the value and range written in the table data can be changed according to the background color to be set by the data input to the table data setting terminal 234, and the address of the input color difference signal can be changed. Is output. Therefore, the background color of the background of the subject can be changed. Other operations are the same as those of the ninety-fifth embodiment.

(Embodiment 97) FIG. 162 is a block diagram showing the structure of an image synthesizing apparatus for a color video camera (Embodiment 97) of the present invention. In FIG. 162, FIG.
Since the parts with the same numbers as 1 indicate the same parts,
These descriptions are omitted. In FIG. 162, reference numeral 235 denotes a background color detection switch to which a Y signal, an RY color difference signal, and a BY color difference signal are input to the input terminal from the process circuit 56, and a control signal is input to a switch control terminal 259. Only when the background color detection switch 235 is turned on, the Y signal, R
-Output the Y color difference signal and the BY color difference signal to the background color memory 236. The background color memory 236 stores the input Y signal, R-
A Y color difference signal and a BY color difference signal are stored. When a write signal is input from a write signal input terminal 237, the Y signal, the RY color difference signal, and the B-Y color stored in the LUT 225 via the table data setting terminal 234. Outputs a Y color difference signal.

Next, the operation will be described. Process circuit
The Y signal, RY color difference signal, and BY color difference signal output from 56 are input to the background color detection switch 235 and the background color memory only when the control signal is input to the switch control terminal 259.
236 is entered. That is, if this control signal is input in a range where a specific hue of the background is imaged, any specific hue can be stored as the background color. Next, when a write signal is input to the write input terminal 237, the background color Y signal, RY color difference signal, and BY color difference signal stored in the background color memory 236 are input to the table data setting terminal 234. . With these values, the value and range written in the table data in the LUT 225 can be changed according to the background color to be set, and the LUT 225 outputs a value corresponding to the address of the input color difference signal.
Therefore, the background color can be arbitrarily changed. Other operations are the same as those of the ninety-fifth embodiment.

(Embodiment 98) An embodiment (Embodiment 98) for facilitating the setting of the background color in Embodiment 97 will be described. FIG. 163 is a block diagram showing a configuration of the ninety-eighth embodiment.
97 is a background color detection switch and a background color memory.
A control signal generation circuit 238 generates a control signal based on the input horizontal synchronization signal (HD) and vertical synchronization signal (VD). The control signal generation circuit 238 outputs the generated control signal to the background color detection switch 235. And output to the viewfinder drive circuit 239. The viewfinder drive circuit 239 is
The control signal and the input video signal during shooting are combined and output to the viewfinder 240.

Next, the operation will be described. Embodiment 97
In the background color memory 23
When the data is stored in the memory 6, the detection point, which is the position where the control signal is output, is fixed at a certain position on the screen, and if the position can be confirmed at the time of photographing, the operation becomes easy. When the horizontal synchronizing signal (HD) and the vertical synchronizing signal (VD) are input, the control signal generating circuit 238 generates and outputs a control signal at the center of the screen 241 as shown in FIG. The control signal is input to the background color detection switch 235 and also to the viewfinder driving circuit 239. A video signal during shooting is also input to the viewfinder drive circuit 239, and the video signal is combined with a control signal and output to the viewfinder 240. When setting the background color in advance, the photographer first sets the detection point 242 at the center of the screen 241 in FIG. 164 so as to be within the range of the background while checking the background to be stored with the viewfinder 240, and then sets the background. If the colors are stored, any background color can be stored without error. Note that the viewfinder 240 in FIG. 163 may be a color television monitor.

(Embodiment 99) An embodiment (Embodiment 99) for facilitating the setting of the background color in Embodiment 97 will be described. FIG. 165 is a block diagram showing a configuration of the ninety-ninth embodiment.
97 is a background color detection switch and a background color memory,
239 and 240 in the figure are the same view finder drive circuit and view finder as those in the embodiment 98 (FIG. 163). Further, in FIG. 165, reference numeral 243 denotes a screen 241 as shown in FIG. 166 in accordance with a horizontal synchronization signal (HD) and a vertical synchronization signal (VD) inputted from outside and a cursor control signal inputted from the mouse 244. A cursor 245 is generated, and a control signal is applied to a background color detection switch 235 and a viewfinder driving circuit.
This is a cursor generator for outputting to 239.

Next, the operation will be described. Embodiment 97
In the background color memory 23
When the control signal is stored in the memory 6, the detection point, which is the position where the control signal is output, can be set to an arbitrary position on the screen, and if the position can be confirmed at the time of photographing, the operation becomes easy. Figure
At 165, the horizontal synchronizing signal (HD) and the vertical synchronizing signal (VD) are input to the cursor generator 243, and the mouse 24
4 outputs a cursor control signal. The cursor generator 243 responds to this cursor control signal by
Cursor 245 at any position on screen 241 as shown at 166
Is generated and a control signal is output. This control signal is input to the background color detection switch 235 and also to the viewfinder drive circuit 239. A video signal during shooting is also input to the viewfinder driving circuit 239, and this video signal is combined with a control signal to form a viewfinder 240.
Is output to When the photographer sets the background color in advance,
First, the user operates the mouse 244 while checking the background to be stored with the viewfinder 240, so that the detection point 242 in FIG. 166 is set in the range of the background other than the subject 246, and then the background color is stored without error. Any background color can be stored. Note that the viewfinder 240 in FIG. 165 may be a color television monitor, and the mouse 244 may be a switch, joystick, keyboard, or the like.

(Embodiment 100) FIG. 167 is a block diagram showing the structure of an image synthesizing apparatus for a color video camera (Embodiment 100) of the present invention. In FIG. 167, the parts denoted by the same reference numerals as those in FIG. 159, FIG. 161 or FIG. 162 indicate the same parts, and thus description thereof will be omitted. FIG.
In FIG. 7, reference numeral 247 denotes an average circuit for integrating the Y signal, RY color difference signal, and BY color difference signal input from the process circuit 56 to obtain an average value of each signal. The obtained average value of each signal is output to the background color memory 236. The background color memory 236 stores the input average value, and when a write signal is input from the write signal input terminal 237, the LU is output via the table data setting terminal 234.
The average value of the Y signal, RY color difference signal, and BY color difference signal stored in T225 is output.

Next, the operation will be described. Process circuit
The Y signal, RY color difference signal, and BY color difference signal output from 56 are input to an average value circuit 247, integrated over the entire screen, and the average value of each signal of the entire screen is output. These average values are input to the background color memory 236 and stored. Next, when a write signal is input to the write signal input terminal 237, the Y of the background color stored in the background color memory 236 is output.
The average value of the signals, the RY color difference signal, and the BY color difference signal is input to a table data setting terminal 234. With these values, the value and range written in the table data in the LUT 225 can be changed according to the background color to be set, and the LUT 225 outputs a value corresponding to the address of the input color difference signal. Therefore, the background color can be arbitrarily changed. Other operations are the same as those of the ninety-fifth embodiment.

(Embodiment 101) An embodiment 101 for facilitating the setting of the background color in the embodiment 100 will be described. FIG. 168 is a block diagram showing a configuration of the embodiment 101.
FIG. 167 shows an average value circuit and a background color memory. 248 is a screen 241 based on the input horizontal synchronizing signal (HD) and vertical synchronizing signal (VD) as shown in FIG.
Area signal generator for generating an area signal for displaying an area 249 at the center of the
8 outputs the generated area signal to the average value circuit 247 and the viewfinder drive circuit 239. The viewfinder drive circuit 239 combines the area signal and the input video signal during shooting and outputs the synthesized signal to the viewfinder 240.

Next, the operation will be described. Embodiment 10
When the background color is averaged by the average value circuit 247 at 0,
If a part of the screen is extracted and averaged, it is not necessary to photograph the background on the entire screen, and if the range can be confirmed at the time of photographing, photographing becomes easy. Horizontal sync signal (HD),
When the vertical synchronizing signal (VD) is input, the area signal generator 248 generates an area signal in the center area of the screen 241 as shown in FIG. Area signal is average circuit 247
And the viewfinder drive circuit 239
Is also entered. The averaging circuit 247 receives the Y signal, the RY color difference signal, and the BY color difference signal, integrates these signals in a range limited by the area signal, and outputs the average value. Viewfinder drive circuit 239
Is also input with a video signal during shooting, and this video signal is combined with an area signal and output to the viewfinder 240. The viewfinder 240 displays the range of the area signal together with the video signal. When setting the background color in advance, the photographer checks the background to be memorized with the viewfinder 240, and checks the area signal range (area) as shown in FIG.
249) is set so as to be within the range of the background, and then, by storing the background color, an arbitrary background color can be stored without error. The viewfinder 240 shown in FIG. 168 may be a color television monitor.

(Embodiment 102) An embodiment 102 for facilitating the setting of the background color in the embodiment 100 will be described. FIG. 170 is a block diagram showing a configuration of the embodiment 102, in which 247 and 236 are those of the embodiment 100.
An average value circuit and a background color memory in FIG. 167 are shown, and 248, 239 and 240 in the figure are the same area signal generator, view finder drive circuit and view finder as in the embodiment 101 (FIG. 168). Further, in FIG.
An area selection terminal for inputting a selection signal to the area signal generator 248. Then, when a selection signal is input from the area selection terminal, the area signal generator 248
As shown in FIG. 1, an area signal is generated so that an area is displayed on one divided screen of the screen 241.

Next, the operation will be described. Embodiment 10
When the background color is averaged by the average value circuit 247 at 0,
If a part of the screen is arbitrarily selected and extracted, the background does not need to be photographed on the entire screen, and photographing becomes easy if the range can be confirmed at the time of photographing. When the horizontal synchronizing signal (HD) and the vertical synchronizing signal (VD) are input and the selection signal is input via the area selection terminal 250, the area signal generator 248 operates according to the selection signal as shown in FIG. An area signal is generated on one of the divided screens.

That is, the area can be selected by the selection signal. The area signal is input to the average value circuit 247 and also to the viewfinder driving circuit 239. In the average circuit 247, the Y signal, the RY color difference signal, and the B-
A Y color difference signal is input, and these signals in a range limited by the area signal are individually integrated, and the respective average values are output. In the viewfinder drive circuit 239, the video signal being captured and the area signal are combined and output to the viewfinder 240. And the viewfinder 240
Displays the area signal range together with the video signal.
When setting the background color in advance, the photographer checks the background to be stored with the viewfinder 240 and determines that the area signal area (area 249) as shown in FIG. By selecting and then storing the background color, any background color can be stored without error. Note that the viewfinder 240 in FIG. 170 may be a color television monitor.

(Embodiment 103) In general, in an image synthesizing apparatus such as a chroma key apparatus, it is necessary to obtain a background image to be synthesized with a subject image by an external color camera or a VTR. Further, in order to synchronize those external inputs with the subject image, for example, the synchronization circuit 58 in the ninety-fifth embodiment (FIG. 159) was required. Embodiment 103 is an image synthesizing apparatus which does not require such an external color camera or VTR and a synchronization circuit. FIG. 172 shows the embodiment.
FIG. 103 is a block diagram showing a configuration of the third embodiment. In FIG. 172,
Since the parts with the same numbers as those in FIG. 159 indicate the same parts,
These descriptions are omitted. The gate circuit 60 receives a video signal of a subject image from a video signal input terminal 251, and the gate circuit 60 and the NOT circuit 59 receive a keying signal from a keying signal input terminal 252. A background image signal generator 253 generates a background image signal of an arbitrary specific hue. The background image signal generator 253 outputs the generated background image signal to the gate circuit 61.

Next, the operation will be described. The video signal of the subject image is input to the video signal input terminal 251 and the keying signal is input to the keying signal input terminal 252. In the gate circuit 60, the background portion is masked from the video signal from the video signal input terminal 251 by the keying signal from the keying signal input terminal 252, and the range of the subject is extracted and output to the synthesis circuit 62. On the other hand, in the gate circuit 61, the subject portion is masked from the background image signal from the background image signal generation device 253 by the inverted signal of the keying signal from the NOT circuit 59, the background range is extracted and output to the synthesis circuit 62. Is done. The gate circuit 60,
The outputs of the gate circuit 61 are combined and output as a combined video output.

(Embodiment 104) The aforementioned embodiment 103
Embodiment 104 is an embodiment 104 which does not require an external color camera or VTR and a synchronization circuit. FIG. 173 is a block diagram showing a structure of the tenth embodiment. In FIG. 173, the same reference numerals as in FIG. 159 denote the same parts, and a description thereof will be omitted. The video signal of the subject image is input from the video signal input terminal 251 to the gate circuit 60, and the gate circuit 60 and the NOT circuit 59
, A keying signal is input from a keying signal input terminal 252. An image memory 254 stores an arbitrary background image as a still image. The image memory 254 outputs the stored still image to the gate circuit 61. An image memory switch 260 is interposed between the image memory 254 and the video signal input terminal 251. The image memory switch 260 is normally open and the image memory
254 is closed only when a background image is stored.

Next, the operation will be described. The video signal of the subject image is input to the video signal input terminal 251 and the keying signal is input to the keying signal input terminal 252. In the gate circuit 60, the background portion is masked from the video signal from the video signal input terminal 251 by the keying signal from the keying signal input terminal 252, and the range of the subject is extracted and output to the synthesis circuit 62. On the other hand, in the gate circuit 61, the subject portion is masked from the still image (background image) from the image memory 254 by the inverted signal of the keying signal from the NOT circuit 59, and the background range is extracted and output to the synthesizing circuit 62. Is done. The outputs of the gate circuits 60 and 61 are synthesized by the synthesizing circuit 62 and output as a synthesized video output.

(Embodiment 105) Embodiment 105 in which special processing (soft focus processing) is performed on a subject image will be described. FIG. 174 is a block diagram showing a configuration of the tenth embodiment. In FIG. 174, FIGS. 159, 161 and 162
Those denoted by the same reference numerals indicate the same or corresponding parts.
The gate circuit 60 receives a video signal of a subject image from a video signal input terminal 251, the gate circuit 60 and the NOT circuit 59 receive a keying signal from a keying signal input terminal 252, and the synchronizing circuit 58 further outputs a background image. A background image signal is input from the signal input terminal 255. Between the gate circuit 60 and the synthesizing circuit 62, there is provided a low-pass filter (LPF) 256 that cuts off the high frequency component and passes only the low frequency component.

Next, the operation will be described. The video signal of the subject image is input to the video signal input terminal 251 and the keying signal is input to the keying signal input terminal 252. In the gate circuit 60, the background portion is masked from the video signal from the video signal input terminal 251 by the keying signal from the keying signal input terminal 252, and the range of the subject is extracted and output to the LPF 256. Only the low-frequency component is extracted by the LPF 256 and output to the synthesis circuit 62. on the other hand,
The background image signal input to the background image signal input terminal 255 is input to the synchronization circuit 58 to synchronize with the video signal. The synchronized background image signal is input to the gate circuit 61. In the gate circuit 61, the subject portion is masked from the background image signal from the synchronization circuit 58 by the inverted signal of the keying signal from the NOT circuit 59, and the range of the background is reduced. It is extracted and output to the synthesis circuit 62. LPF256,
The outputs of the gate circuit 61 are combined and output as a combined video output.

(Embodiment 106) An embodiment 106 for performing special processing (mosaic processing) on a subject image will be described. FIG. 175 is a block diagram showing a structure of the embodiment 106. 175, 161 and 162 indicate the same or corresponding parts. A gate circuit 60 receives a video signal of a subject image from a video signal input terminal 251, a gate circuit 60 and a NOT circuit 59 receive a keying signal from a keying signal input terminal 252, and a synchronizing circuit 58 further inputs a background image. A background image signal is input from the signal input terminal 255. A mosaic processing circuit 257 that performs mosaic processing on the video signal of the subject image is provided between the gate circuit 60 and the synthesis circuit 62.

Next, the operation will be described. The video signal of the subject image is input to the video signal input terminal 251 and the keying signal is input to the keying signal input terminal 252. In the gate circuit 60, the background portion is masked from the video signal from the video signal input terminal 251 by the keying signal from the keying signal input terminal 252, and the range of the subject is extracted and output to the mosaic processing circuit 257. The mosaic processing circuit 257 performs mosaic processing and outputs the result to the synthesis circuit 62. On the other hand, the background image signal input to the background image signal input terminal 255 is input to the synchronization circuit 58 to synchronize with the video signal. The synchronized background image signal is input to the gate circuit 61. In the gate circuit 61, the subject portion is masked from the background image signal from the synchronization circuit 58 by the inverted signal of the keying signal from the NOT circuit 59, and the range of the background is reduced. It is extracted and output to the synthesis circuit 62. Synthesis circuit 62
The outputs of the mosaic processing circuit 257 and the gate circuit 61 are combined and output as a combined video output.

(Embodiment 107) An embodiment 107 for performing special processing (defect processing) on a subject image will be described. FIG. 176 is a block diagram showing a configuration of the tenth embodiment. 176, 161 and 162 indicate the same or corresponding parts. The video signal of the subject image is input from the video signal input terminal 251 to the gate circuit 60, and the gate circuit 60 and the NOT circuit 59
The keying signal is inputted from the keying signal input terminal 252 to the synchronizing circuit 58 and the background image signal input terminal 25
From 5, the background image signal is input. Between the gate circuit 60 and the synthesizing circuit 62, there is provided a defect processing circuit 258 for performing so-called defect processing for reducing the number of luminance gradations by thinning out bits of a video signal of a subject image which is an input signal.

Next, the operation will be described. The video signal of the subject image is input to the video signal input terminal 251 and the keying signal is input to the keying signal input terminal 252. In the gate circuit 60, the background portion is masked from the video signal from the video signal input terminal 251 by the keying signal from the keying signal input terminal 252, and the range of the subject is extracted and output to the defect processing circuit 258. The defect processing is performed by the defect processing circuit 258.
The signal is output to the combining circuit 62. On the other hand, the background image signal input terminal
The background image signal input to 255 is input to the synchronization circuit 58 to synchronize with the video signal. The synchronized background image signal is input to the gate circuit 61, and the gate circuit 61
The subject portion is masked from the background image signal from the synchronization circuit 58 by the inverted signal of the keying signal from the OT circuit 59, and the background range is extracted and output to the synthesis circuit 62. The output of the defect processing circuit 258 and the output of the gate circuit 61 are synthesized by the synthesizing circuit 62 and output as a synthesized video output.

[0372]

As described above, in the video signal processing apparatus according to the first, fifth, ninth, and thirteenth aspects, the autofocus can always be focused on the main subject (person) with a simple circuit configuration.

Claims 2, 3, 4, 6, 7, 8, 10, 11,
In the video signal processing apparatus of the inventions of 12, 14, 15 and 16, the main subject (person) being photographed is optimally produced without overexposure or overexposure, regardless of backlighting or overdirect lighting. Photometric control can be performed so that an image can be obtained.

In the video signal processing device according to the seventeenth to twentieth aspects of the present invention, a person's face can be determined from a subject with a simple circuit configuration regardless of the size of the subject and the distance to the subject. According to the video signal processing apparatus of the inventions of claims 21, 22, and 23, regardless of the size of the subject and the distance to the subject, a simple circuit configuration can be used to accurately detect the skin color region and to be the main subject. Can be recognized as a face.

In the video signal processing apparatus according to the twenty-fourth and twenty-fifth aspects of the present invention, even when a plurality of flesh-colored areas are detected, an accurate circuit configuration can be achieved with a simple circuit configuration regardless of the size of the subject and the distance to the subject. The face of a person who is a main subject can be recognized. According to the video signal processing device of the twenty-sixth aspect, with a simple circuit configuration, it is possible to perform color correction based on a memory color without affecting the skin color of a human face on the color of other areas.

[0376] In the video signal processing apparatus according to claim 27,
By increasing the gain of the luminance signal, it is possible to make the human face look more bloody. In the video signal processing device according to the twenty-eighth aspect, by reducing the gain of the aperture signal only for the face of a person, it is possible to make it appear that enhanced wrinkles and breakouts have been removed.

[0377] In the video signal processing apparatus according to claim 29,
By changing the frequency characteristics of the aperture signal, natural wrinkles can be obtained instead of wrinkles unnaturally enhanced by the signal processing of the camera. In the video signal processing apparatus according to the invention of claim 30, with a simple circuit configuration, a skin color area is detected and recognized as a human face in order to optimally perform autofocus control, and the size of the area is automatically adjusted. A focus control detection area can be set and moved.

[0378] In the video signal processing apparatus according to the thirty-first aspect,
With a simple circuit configuration, the skin color area is detected so that the main image of the person's face can be optimally obtained without overexposure or overexposure, regardless of whether it is backlit or overlit. Then, the iris is recognized as a human face, the iris photometry area is set to the size of the area, and the iris can be moved to follow. In the video signal processing device according to the invention of claim 32, with a simple circuit configuration, the face of a person who is the main subject, regardless of backlight or over-directed light, does not overexpose or lose black. It is possible to detect a flesh-colored area and recognize it as a human face so that an optimal image can be obtained, set a photometric area for automatic gain control according to the size of the area, and follow the movement.

[0379] In the video signal processing apparatus according to claim 33,
With a simple circuit configuration, the skin color area is detected so that the main image of the person's face can be optimally obtained without overexposure or overexposure, regardless of whether it is backlit or overlit. Then, it is recognized as a human face, and a photometric area for automatic electronic shutter speed adjustment can be set according to the size of the area, and the area can be moved in a following manner. In the video signal processing apparatus according to the invention of claim 34, with a simple circuit configuration, in order to optimally perform autofocus control, a skin color area is detected and recognized as a human face, and an autofocus slightly larger than that area is detected. A control detection area can be set and the control area can be moved.

[0380] In the video signal processing apparatus according to claim 35,
With a simple circuit configuration, the skin color area is detected so that the main image of the person's face can be optimally obtained without overexposure or overexposure, regardless of whether it is backlit or overlit. Then, the iris is recognized as a human face, and the iris photometric area can be set to a size slightly smaller than that area, and the iris can be moved to follow. In the video signal processing apparatus according to claim 36, with a simple circuit configuration, the face of a person who is a main subject is not overexposed or overexposed, regardless of backlight or over-directed light, without being overexposed. It is possible to detect a flesh-colored area and recognize it as a human face so that an optimal image can be obtained, set a photometric area for automatic gain control slightly smaller than that area, and follow and move the area.

In the video signal processing apparatus according to claim 37,
With a simple circuit configuration, the skin color area is detected so that the main image of the person's face can be optimally obtained without overexposure or overexposure, regardless of whether it is backlit or overlit. Then, it is recognized that the face is a human face, and a photometric area for automatic electronic shutter speed adjustment slightly smaller than that area is set. Claim 38
In the video signal processing device of the invention of the invention, with a simple circuit configuration,
In order to optimally perform autofocus control, a skin color area is detected and recognized as a human face, and a detection area for autofocus control slightly larger than that area is set, and the area can be followed and moved.

[0382] In the video signal processing apparatus according to claim 39,
With a simple circuit configuration, the skin color area is detected so that the main image of the person's face can be optimally obtained without overexposure or overexposure, regardless of whether it is backlit or overlit. Then, the iris is recognized as a human face, and the iris photometric area can be set to a size slightly smaller than that area, and the iris can be moved to follow. In the video signal processing device according to claim 40, with a simple circuit configuration, the face of a person who is a main subject is not overexposed or overexposed, regardless of backlight or over-directed light, without being overexposed. It is possible to detect a flesh-colored area and recognize it as a human face so that an optimal image can be obtained, set a photometric area for automatic gain control slightly smaller than that area, and follow and move the area.

[0383] In the video signal processing apparatus according to claim 41,
With a simple circuit configuration, the skin color area is detected so that the main image of the person's face can be optimally obtained without overexposure or overexposure, regardless of whether it is backlit or overlit. Then, it is recognized that the face is a human face, and a photometric area for automatic electronic shutter speed adjustment slightly smaller than that area is set. Claim 4
In the color video cameras of the inventions of 2, 43, 45 and 46, when recording by remote control, erroneous recording such that the recording can be continued even though the main subject (person) is not shown with a simple circuit configuration. It is possible to obtain an image in which the position of the face of the main subject is always positioned at the optimum position on the screen.

According to the color video camera of the invention of claims 44 and 47, since the detection signal such as the VISS signal is recorded on the tape at a place where the main subject (person) is not recorded, the editing of the erroneous recording is easy. It is.

[Brief description of the drawings]

FIG. 1 is a block diagram of a conventional video signal processing device.

FIG. 2 is a block diagram of another conventional video signal processing device.

FIG. 3 is a block diagram of still another conventional video signal processing device.

FIG. 4 is a block diagram of a conventional color video camera.

FIG. 5 is a schematic diagram showing a state in which oneself is photographed by remote control.

FIG. 6 is a block diagram of a conventional image synthesizing apparatus for a color video camera.

FIG. 7 is a diagram illustrating an operation of the image synthesizing device illustrated in FIG.

FIG. 8 is a diagram illustrating an example of detecting a skin color area.

FIG. 9 is a diagram illustrating an example of a change in a flesh color area according to the level of a luminance signal.

FIG. 10 is a block diagram illustrating a configuration of a skin color detection circuit.

FIG. 11 is a diagram illustrating a flesh-tone area.

FIG. 12 is a diagram showing a skin color area.

FIG. 13 is a diagram illustrating a flesh color area.

FIG. 14 is a diagram showing a flesh color region.

FIG. 15 is a diagram illustrating a table for detecting a skin color area.

FIG. 16 is a diagram showing a main subject to be photographed.

17 is a diagram illustrating a skin color area when the subject illustrated in FIG. 16 is imaged.

FIG. 18 is a block diagram illustrating a configuration of another skin color detection circuit.

19 is an output waveform diagram in the skin color detection circuit of FIG.

20 is a block diagram showing a configuration of a slice circuit in FIG.

FIG. 21 is a block diagram showing a configuration of still another skin color detection circuit.

22 is an output waveform diagram in the skin color detection circuit of FIG. 21.

FIG. 23 is a block diagram illustrating a configuration of a video signal processing device according to the present invention.

FIG. 24 is a diagram illustrating color correction in a skin color area.

FIG. 25 is a block diagram showing a configuration of another video signal processing device of the present invention.

FIG. 26 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 27 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 28 is a diagram illustrating a configuration of an aperture correction circuit of FIG. 27;

FIG. 29 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 30 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 31 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 32 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 33 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 34 is a diagram illustrating an area representing an image frame.

FIG. 35 is a diagram showing a configuration of a data select circuit.

FIG. 36 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 37 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 38 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 39 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 40 is a diagram showing a state in which a skin color detection signal is re-formed by a low-pass filter and a slice circuit.

FIG. 41 is a diagram showing a focus area.

FIG. 42 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 43 is a diagram showing a configuration of a data select circuit.

FIG. 44 is a diagram showing a state in which a data selection circuit re-forms a skin color detection signal.

FIG. 45 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 46 is a diagram showing a state in which a skin color detection signal is re-formed by a low-pass filter and a slice circuit.

FIG. 47 is a diagram showing a photometry area.

FIG. 48 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 49 is a diagram showing a configuration of a data select circuit.

FIG. 50 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 51 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 52 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 53 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 54 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 55 is a diagram showing a focus area.

FIG. 56 is a diagram showing a focus area.

FIG. 57 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 58 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 59 is a diagram showing a photometry area.

FIG. 60 is a diagram showing a photometry area.

FIG. 61 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 62 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 63 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 64 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 65 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 66 is a diagram showing a focus area.

FIG. 67 is a diagram showing a photometry area.

FIG. 68 is a block diagram illustrating a configuration of a color video camera of the present invention.

FIG. 69 is a diagram showing a configuration of a data latch circuit.

FIG. 70 is a flowchart showing an algorithm of the microcomputer.

FIG. 71 is a block diagram showing a configuration of another color video camera of the present invention.

FIG. 72 is a flowchart showing an algorithm of the microcomputer.

FIG. 73 is a block diagram showing a configuration of still another color video camera of the present invention.

FIG. 74 is a block diagram showing a configuration of still another color video camera of the present invention.

FIG. 75 is a schematic view showing a configuration of a remote controller.

FIG. 76 is a schematic view showing another configuration of the remote controller.

FIG. 77 is a block diagram showing a configuration of still another color video camera of the present invention.

Fig. 78 is a diagram illustrating a format of a tape for recording and reproducing a video signal.

FIG. 79 is a block diagram showing a configuration of still another color video camera of the present invention.

FIG. 80 is a diagram illustrating reproduced images of a video signal of a color video camera, an output signal of a skin color detection circuit, and an output signal of an adder.

FIG. 81 is a flowchart showing an algorithm of the microcomputer.

FIG. 82 is a block diagram showing a configuration of another color video camera of the present invention.

FIG. 83 is a flowchart showing an algorithm of the microcomputer.

FIG. 84 is a block diagram showing a configuration of still another color video camera of the present invention.

FIG. 85 is a block diagram showing a configuration of still another color video camera of the present invention.

FIG. 86 is a block diagram showing a configuration of still another color video camera of the present invention.

FIG. 87 is a block diagram showing a configuration of still another color video camera of the present invention.

FIG. 88 is a diagram illustrating a relationship between a reproduced image of an output signal of a skin color detection circuit and an image frame determined by a window generation circuit when a person is imaged.

FIG. 89 is a diagram illustrating a relationship between a reproduced image of an output signal of a skin color detection circuit and an image frame determined by a window generation circuit when a person is imaged.

FIG. 90 is a block diagram showing a configuration of still another color video camera of the present invention.

FIG. 91 is a block diagram showing a configuration of still another color video camera of the present invention.

FIG. 92 is a block diagram showing a configuration of still another color video camera of the present invention.

FIG. 93 is a block diagram showing a configuration of still another color video camera of the present invention.

FIG. 94 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 95 is a block diagram illustrating a configuration of a correlation value calculation circuit.

FIG. 96 is a flowchart showing an algorithm of the microcomputer.

FIG. 97 is a diagram illustrating a range determined according to a distance to a subject and a zoom position.

FIG. 98 is a diagram showing predetermined detection points for obtaining a correlation on a video signal.

FIG. 99 is a diagram showing predetermined detection points for obtaining a correlation on a video signal.

FIG. 100 is a diagram showing the order in which correlation is obtained at a detection point.

FIG. 101 is a diagram showing the center of a human face area and its size.

FIG. 102 is a diagram showing the order in which correlation is obtained at a detection point.

FIG. 103 is a flowchart illustrating an algorithm of the microcomputer.

FIG. 104 is a diagram showing a range determined according to a distance to a subject and a zoom position.

FIG. 105 is a diagram showing predetermined detection points for obtaining a correlation on a video signal.

FIG. 106 is a diagram showing predetermined detection points for obtaining a correlation on a video signal.

FIG. 107 is a diagram showing the order in which correlation is obtained at a detection point.

FIG. 108 is a diagram showing the order in which correlation is obtained at a detection point.

FIG. 109 is a flowchart showing an algorithm of the microcomputer.

FIG. 110 is a diagram showing a range determined according to a distance to a subject and a zoom position.

FIG. 111 is a diagram showing predetermined detection points for obtaining a correlation on a video signal.

Fig. 112 is a diagram illustrating a predetermined detection portion for obtaining a correlation on a video signal.

FIG. 113 is a diagram showing the order in which correlation is obtained at a detection point.

FIG. 114 is a diagram showing the order in which correlation is obtained at a detection point.

FIG. 115 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 116 is a flowchart showing an algorithm of the microcomputer.

FIG. 117 is a diagram illustrating a range determined according to a distance to a subject and an enlargement magnification.

FIG. 118 is a flowchart showing an algorithm of the microcomputer.

FIG. 119 is a diagram illustrating a range detected as a human face.

FIG. 120 is a diagram illustrating values in the horizontal direction of the detected flesh color region.

FIG. 121 is a diagram showing a range detected as a human face.

FIG. 122 is a diagram illustrating horizontal and vertical values of a detected flesh color area.

FIG. 123 is a diagram illustrating an image frame representing an area detected as a human face.

FIG. 124 is a diagram illustrating a case where a plurality of skin color regions are detected.

FIG. 125 is a block diagram showing a configuration of still another video signal processing device of the present invention.

Fig. 126 is a block diagram illustrating a configuration of still another video signal processing device according to the present invention.

Fig. 127 is a block diagram illustrating a configuration of still another video signal processing device according to the present invention.

FIG. 128 is a block diagram illustrating an internal configuration of an aperture creation circuit.

Fig. 129 is a block diagram illustrating a configuration of still another video signal processing device according to the present invention.

FIG. 130 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 131 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 132 is a block diagram illustrating a configuration of still another video signal processing device according to the present invention.

FIG. 133 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 134 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 135 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 136 is an output waveform diagram of a low-pass filter.

FIG. 137 is a schematic diagram showing a focus area and a photometry area.

FIG. 138 is a schematic diagram showing a focus area when a distance to a subject is long.

FIG. 139 is a schematic diagram illustrating a focus area when a distance to a subject is short.

FIG. 140 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 141 is a schematic diagram showing a photometric area when a distance to a subject is long.

FIG. 142 is a schematic diagram showing a photometric area when a distance to a subject is short.

Fig. 143 is a block diagram illustrating a configuration of still another video signal processing device according to the present invention.

FIG. 144 is a block diagram showing a configuration of still another video signal processing device of the present invention.

FIG. 145 is a schematic diagram showing a focus area in which a value of width w is added to a skin color area.

FIG. 146 is a schematic diagram showing a photometric area in which the value of width w is reduced in a flesh-tone area.

Fig. 147 is a block diagram illustrating a configuration of still another color video camera of the present invention.

FIG. 148 is a flowchart illustrating an algorithm of the microcomputer.

FIG. 149 is a block diagram showing a configuration of still another color video camera of the present invention.

FIG. 150 is a flowchart showing an algorithm of the microcomputer.

FIG. 151 is a block diagram showing a configuration of still another color video camera of the present invention.

FIG. 152 is a block diagram showing a configuration of still another color video camera of the present invention.

FIG. 153 is a block diagram showing a configuration of still another color video camera of the present invention.

FIG. 154 is a block diagram showing a configuration of still another color video camera of the present invention.

FIG. 155 is a block diagram illustrating a configuration of still another color video camera of the present invention.

FIG. 156 is a block diagram illustrating a configuration of still another color video camera of the present invention.

FIG. 157 is a block diagram illustrating a configuration of still another color video camera of the present invention.

FIG. 158 is a block diagram showing a configuration of still another color video camera of the present invention.

FIG. 159 is a block diagram illustrating the configuration of an image composition device for a color video camera according to the present invention.

FIG. 160 is a diagram showing table data of a lookup table.

FIG. 161 is a block diagram illustrating a configuration of an image synthesis device of another color video camera of the present invention.

FIG. 162 is a block diagram showing a configuration of an image synthesizing device of still another color video camera according to the present invention.

FIG. 163 is a block diagram showing a configuration of still another color video camera of the present invention.

Fig. 164 is a diagram illustrating chroma key sample points.

FIG. 165 is a block diagram showing a configuration of still another color video camera of the present invention.

Fig. 166 is a diagram illustrating chroma key sample points.

FIG. 167 is a block diagram illustrating a configuration of an image synthesizing device of still another color video camera according to the present invention.

FIG. 168 is a block diagram illustrating a configuration of still another color video camera of the present invention.

Fig. 169 is a diagram illustrating an area of a chroma key.

FIG. 170 is a block diagram showing a configuration of still another color video camera of the present invention.

FIG. 171 is a diagram showing a chroma key area.

Fig. 172 is a block diagram illustrating a configuration of an image synthesizing device of still another color video camera according to the present invention.

Fig. 173 is a block diagram illustrating a configuration of an image synthesizing device of still another color video camera according to the present invention.

Fig. 174 is a block diagram illustrating a configuration of an image synthesizing device of still another color video camera according to the present invention.

FIG. 175 is a block diagram showing a configuration of an image synthesizing device of still another color video camera according to the present invention.

FIG. 176 is a block diagram illustrating a configuration of an image synthesizing device of still another color video camera according to the present invention.

[Explanation of symbols]

24 automatic gain control circuit (AGC), 27 window generation circuit, 31 microcomputer, 49 remote control, 50
Receiver circuit, 78 low-pass filter (LPF), 79 slice circuit, 95 correlation value calculation circuit, 101 skin color detection circuit,
105 memory, 106 comparator, 108 low pass filter (LPF), 109 slice circuit, 111 gain control circuit, 112 gain control circuit, 115 gain control circuit, 118
Gain control circuit, 120 aperture correction circuit, 123, 124, 12
5 bandpass filter (BPF), 135 gain control circuit, 136 gain control circuit, 186 control signal generation circuit, 187 fixed head, 225 look-up table (LUT), 256 low-pass filter (LPF), 257
Mosaic processing circuit, 258 defect processing circuit.

 ──────────────────────────────────────────────────続 き Continued on the front page (31) Priority claim number Japanese Patent Application No. 4-107451 (32) Priority date Hei 4 (1992) April 27 (33) Priority claim country Japan (JP) (31) Priority Claim number Japanese Patent Application No. 4-161057 (32) Priority Date Hei 4 (1992) June 19 (33) Priority claiming country Japan (JP) (31) Priority claim number Japanese Patent Application No. 4-161058 (32) Priority Japan, Japan (JP) (31) Priority claim number Japanese Patent Application No. 4-208929 (32) Priority Date Heisei 4 (1992) August 5, (33) ) Priority claim country Japan (JP) (31) Priority claim number Japanese Patent Application No. 4-208930 (32) Priority date Hei 4 (1992) August 5, (33) Priority claim country Japan (JP) (31) Priority claim number Japanese Patent Application No. 4-222698 (32) Priority Date Heisei 4 (1992) August 21 (33) Priority claim country Japan (JP) (31) Priority claim number Japanese Patent Application No. 4-222699 (32) ) Priority date Hei 4 (August 21, 1992) (33) Priority claiming country Japan (JP) (72) Inventor Kazuaki Kojima 1 Baba Zujo, Nagaokakyo-shi, Kyoto Mitsubishi Electric Engineering Co., Ltd. Kyoto Office

Claims (47)

[Claims] In a video signal processing apparatus for processing a video signal obtained by photographing a subject, a focus lens for focusing the subject and a focusing area setting means for setting a focusing area for focusing the subject. Control means for controlling the focus lens so that the obtained video signal is focused in the set focusing area; and flesh color detection means for detecting a flesh color area in the obtained video signal. The video signal processing device, wherein the focus area setting means is configured to set a skin color area detected by the skin color detection means as a focus area. 2. A video signal processing apparatus for processing a video signal obtained by photographing a subject, wherein a photometric area setting means for setting a photometric area for measuring the amount of incident light, and a level of the video signal in the set photometric area. An iris that adjusts the amount of incident light and a skin color detection unit that detects a skin color region in the obtained video signal so that
The video signal processing device, wherein the photometric area setting means is configured to set a skin color area detected by the skin color detecting means as a photometric area. 3. A video signal processing device for processing a video signal obtained by photographing a subject, wherein a photometric area setting means for setting a photometric area for controlling the gain of the obtained video signal to be constant. Automatic gain control means for controlling the gain of the video signal so as to keep the level of the video signal in the photometric area constant; and skin color detection means for detecting a skin color area in the obtained video signal, wherein the photometric area setting is performed. The image signal processing device is characterized in that the means is configured to set a skin color area detected by the skin color detecting means as a photometric area. 4. A video signal processing device for processing a video signal obtained by photographing a subject, wherein a photometric area setting means for setting a photometric area for measuring the amount of incident light, and a level of the video signal in the set photometric area. Automatic shutter speed adjusting means for changing the shutter speed so as to make the shutter speed constant, and a flesh color detecting means for detecting a flesh color area in the obtained video signal, wherein the photometric area setting means is provided by the flesh color detecting means A video signal processing device characterized in that the detected flesh color area is set as a photometric area. 5. A video signal processing device for processing a video signal obtained by photographing a subject, a focus lens for focusing the subject, and a focusing area setting means for setting a focusing area for focusing the subject. Control means for controlling the focus lens so that the obtained video signal is focused in the set focusing area; flesh color detecting means for detecting a flesh color area in the obtained video signal; and flesh color detecting means Variable means for changing the range of the flesh-color area detected by the focusing means, and the focusing area setting means focuses on a range in which the flesh-color area detected by the flesh-color detecting means is increased by a predetermined value by the variable means. A video signal processing device characterized by being configured to be an area. 6. A video signal processing apparatus for processing a video signal obtained by photographing a subject, wherein a photometric area setting means for setting a photometric area for measuring the amount of incident light, and a level of the video signal in the set photometric area. An iris that adjusts the amount of incident light so as to make constant, a skin color detection unit that detects a skin color region in the obtained video signal, and a variable unit that can change the range of the skin color region detected by the skin color detection unit. A video signal processing device, wherein the photometric area setting means is configured to set a range in which the skin color area detected by the skin color detecting means is reduced by a predetermined value by the variable means as a photometric area. . 7. A video signal processing device for processing a video signal obtained by photographing a subject, wherein a photometric area setting means for setting a photometric area for controlling the gain of the obtained video signal to be constant. Automatic gain control means for controlling the gain of the video signal so as to keep the level of the video signal in the photometric area constant; flesh color detecting means for detecting a flesh color area in the obtained video signal; Changing means for changing the range of the flesh color area, wherein the photometric area setting means sets a range in which the flesh color area detected by the flesh color detecting means is reduced by a predetermined value by the variable means as a photometric area. A video signal processing device characterized in that: 8. A video signal processing device for processing a video signal obtained by photographing a subject, wherein a photometric area setting means for setting a photometric area for measuring the amount of incident light, and a level of the video signal in the set photometric area. Automatic shutter speed adjusting means for changing the shutter speed so as to keep the constant, a flesh color detecting means for detecting a flesh color area in the obtained video signal, and changing a range of the flesh color area detected by the flesh color detecting means. The photometric area setting means is configured to set a range in which the skin color area detected by the skin color detecting means is reduced by a predetermined value by the variable means as a photometric area. Video signal processing device. 9. A video signal processing apparatus for processing a video signal obtained by photographing a subject, a zoom lens for changing a magnification of the subject, a focus lens for focusing the subject, and a focus lens for focusing the subject. Focusing area setting means for setting a focusing area; control means for controlling the focus lens so that the obtained video signal is focused in the set focusing area; and a skin color area in the obtained video signal. Skin color detecting means for detecting, and variable means for changing the range of the skin color area detected by the skin color detecting means, wherein the focusing area setting means sets the skin color area detected by the skin color detecting means to the variable means The focus area is defined as a range that is increased by a predetermined value, and the predetermined value is changed according to the distance to the subject and the magnification of the subject. A video signal processing device. 10. A video signal processing apparatus for processing a video signal obtained by photographing a subject, a zoom lens for changing a magnification of the subject, a focus lens for focusing the subject, and a photo lens for measuring an incident light amount. Photometric area setting means for setting a photometric area; an iris for adjusting the amount of incident light so that the level of the video signal in the set photometric area is constant; and a skin color detecting means for detecting a skin color area in the obtained video signal And a variable means for changing the range of the flesh color area detected by the flesh color detecting means, wherein the photometric area setting means reduces the flesh color area detected by the flesh color detecting means by a predetermined value by the variable means. Is defined as a photometric area, and the predetermined value is changed according to the distance to the subject and the magnification of the subject. Characteristic video signal processing device. 11. A video signal processing apparatus for processing a video signal obtained by photographing a subject, a zoom lens for changing a magnification of the subject, a focus lens for focusing the subject, and a gain of the obtained video signal. A photometric area setting means for setting a photometric area for controlling the constant, and an automatic gain control means for controlling the gain of the video signal so that the level of the video signal in the set photometric area is constant. A flesh color detecting means for detecting a flesh color area in the video signal, and a variable means for changing a range of the flesh color area detected by the flesh color detecting means, wherein the photometric area setting means is detected by the flesh color detecting means. A range in which the flesh color area is reduced by a predetermined value by the variable means is defined as a photometric area, and the range is determined according to the distance to the subject and the magnification of the subject. A video signal processing apparatus characterized by changing a predetermined value. 12. A video signal processing apparatus for processing a video signal obtained by photographing a subject, a zoom lens for changing a magnification of the subject, a focus lens for focusing the subject, and a photometer for measuring an incident light amount. Photometric area setting means for setting the photometric area, automatic electronic shutter speed adjusting means for changing the shutter speed so as to keep the level of the video signal in the set photometric area constant, and detecting a flesh color area in the obtained video signal And a variable means for changing the range of the skin color area detected by the skin color detection means, wherein the photometric area setting means determines the skin color area detected by the skin color detection means by the variable means. The area reduced by the value is defined as the photometry area, and the predetermined area is determined according to the distance to the subject and the magnification of the subject A video signal processing device characterized in that the value is changed. 13. A video signal processing apparatus for processing a video signal obtained by photographing a subject, a zoom lens for changing a magnification of the subject, a focus lens for focusing the subject, and a focus lens for focusing the subject. Focusing area setting means for setting a focusing area; control means for controlling the focus lens so that the obtained video signal is focused in the set focusing area; and a skin color area in the obtained video signal. Skin color detecting means for detecting, and variable means for changing the range of the skin color area detected by the skin color detecting means, wherein the focusing area setting means sets the skin color area detected by the skin color detecting means to the variable means The area increased by a predetermined value according to the distance to the subject and the magnification of the subject is set as the focusing area, and the reciprocal of the distance to the subject and the subject A video signal processing device configured to switch the in-focus area to an area smaller than the detected flesh color area by a predetermined value when the product of the enlargement magnification and the magnification is larger than a predetermined value. 14. A video signal processing apparatus for processing a video signal obtained by photographing a subject, a zoom lens for changing a magnification of the subject, a focus lens for focusing the subject, and a photometer for measuring the amount of incident light. Photometric area setting means for setting a photometric area; an iris for adjusting the amount of incident light so that the level of the video signal in the set photometric area is constant; and a skin color detecting means for detecting a skin color area in the obtained video signal And a variable means for changing the range of the flesh color area detected by the flesh color detecting means, the photometric area setting means, the flesh color area detected by the flesh color detecting means and the distance to the subject by the variable means. The area reduced by a predetermined value according to the magnification of the subject is defined as the photometry area, and the reciprocal of the distance to the subject and the magnification of the subject Is smaller than a predetermined value,
A video signal processing device configured to switch a photometric area to an area larger by a predetermined value than a detected flesh color area. 15. A video signal processing apparatus for processing a video signal obtained by photographing a subject, a zoom lens for changing a magnification of the subject, a focus lens for focusing the subject, and a gain of the obtained video signal. A photometric area setting means for setting a photometric area for controlling the constant, and an automatic gain control means for controlling the gain of the video signal so that the level of the video signal in the set photometric area is constant. A flesh color detecting means for detecting a flesh color area in the video signal, and a variable means for changing a range of the flesh color area detected by the flesh color detecting means, wherein the photometric area setting means is detected by the flesh color detecting means. A range in which the flesh color area is reduced by a predetermined value according to the distance to the subject and the magnification of the subject by the variable means is defined as a photometric area, A video signal processing device configured to switch the photometric area to an area larger by a predetermined value than the detected flesh color area when a product of a reciprocal of the distance to and the magnification of the subject is smaller than a predetermined value. . 16. A video signal processing device for processing a video signal obtained by photographing a subject, a zoom lens for changing a magnification of the subject, a focus lens for focusing the subject, and a photometer for measuring an incident light amount. Photometric area setting means for setting the photometric area, automatic electronic shutter speed adjusting means for changing the shutter speed so as to keep the level of the video signal in the set photometric area constant, and detecting a flesh color area in the obtained video signal And a variable means for changing the range of the flesh color area detected by the flesh color detecting means. The photometric area setting means sets the flesh color area detected by the flesh color detecting means to an object by the variable means. The area reduced by a predetermined value according to the distance to the subject and the magnification of the subject A video signal processing device configured to switch the photometric area to an area larger by a predetermined value than the detected flesh color area when the product of the reciprocal of the distance and the magnification of the subject is smaller than a predetermined value. 17. A video signal processing apparatus for processing a video signal obtained by photographing a subject, comprising: a zoom lens for changing an enlargement magnification of the subject; a focus lens for focusing the subject; Skin color detecting means for detecting a skin color area; selecting means for selecting a predetermined range in a horizontal direction on a video signal according to a magnification of the zoom lens and a focus position of the focus lens; Comparing means for sequentially comparing the range selected by the means and the horizontal range of the flesh-color area detected by the flesh-color detecting means at a predetermined detection point on the video signal; and a comparison between the comparing means. Based on the result,
A correlation value calculation unit that calculates a correlation value between the range selected by the selection unit and the horizontal range of the skin color region detected by the skin color detection unit; and a correlation value equal to or greater than a predetermined value calculated by the correlation value calculation unit. Means for detecting the calculated skin color region as a human face. 18. A video signal processing apparatus for processing a video signal obtained by photographing a subject, comprising: a zoom lens for changing a magnification of the subject; a focus lens for focusing the subject; Skin color detecting means for detecting a skin color area; selecting means for selecting a predetermined range in a vertical direction on a video signal according to a magnification of the zoom lens and a focus position of the focus lens; Comparing means for sequentially comparing the range selected by the means with the vertical range of the skin color area detected by the skin color detecting means at a predetermined detection point on the video signal; Based on the result,
Correlation value calculation means for calculating a correlation value between the range selected by the selection means and the range in the vertical direction of the skin color area detected by the skin color detection means; and a correlation value equal to or greater than a predetermined value by the correlation value calculation means. Means for detecting the calculated skin color region as a human face. 19. A video signal processing apparatus for processing a video signal obtained by photographing a subject, comprising: a zoom lens for changing a magnification of the subject; a focus lens for focusing the subject; A flesh-color detecting means for detecting a flesh-color area, a selecting means for selecting a predetermined range in a two-dimensional area on a video signal according to a magnification of the zoom lens and a focus position of the focus lens, A comparison unit that sequentially compares the range selected by the selection unit and the range of the skin color region detected by the skin color detection unit at a predetermined detection point on the video signal, and a comparison result of the comparison unit. Correlation value calculation means for calculating a correlation value between the range selected by the selection means and the range of the skin color region detected by the skin color detection means based on the correlation value; Means for detecting, as a human face, a skin color area for which a correlation value equal to or greater than a predetermined value has been calculated by the calculation means. 20. A video signal processing apparatus for processing a video signal obtained by photographing a subject, comprising: a zoom lens for changing a magnification of the subject; a focus lens for focusing the subject; A skin color detecting means for detecting a skin color region, a coefficient determined according to an enlargement magnification of the zoom lens and a focus position of the focus lens, and a length for detecting a human face in a video signal by the coefficient. , A range, and a figure, and means for detecting a human face based on a skin color area detected in the skin color area and an output signal of the variable means. Processing equipment. 21. A video signal processing apparatus for processing a video signal obtained by photographing a subject, comprising: a zoom lens for changing a magnification of the subject; a focus lens for focusing the subject; A flesh-color detecting means for detecting a flesh-color area; a selecting means for selecting a range of a predetermined size on a video signal according to a magnification of the zoom lens and a focus position of the focus lens; A comparison unit that compares the size of the range selected by the selection unit with the size of the skin color region detected by the skin color detection unit; and the comparison unit determines that the size of the skin color region detected by the skin color detection unit is small. Means for detecting the skin color area as a human face when a comparison result that the result is within the range selected by the selection means is obtained. Video signal processing device. 22. A video signal processing apparatus for processing a video signal obtained by photographing a subject, comprising: a zoom lens for changing a magnification of the subject; a focus lens for focusing the subject; Skin color detection means for detecting a skin color area, and selection means for selecting a range of a predetermined size in a horizontal direction on a video signal according to the magnification of the zoom lens and the in-focus position of the focus lens. Comparing means for comparing the size of the range selected by the selecting means with the horizontal size of the flesh color area detected by the flesh color detecting means; and the comparing means detects the flesh color area by the flesh color detecting means. If a comparison result indicating that the horizontal size of the skin color area is within the range selected by the selection means is obtained, this skin color area is detected as a human face. A video signal processing device. 23. A video signal processing apparatus for processing a video signal obtained by photographing a subject, comprising: a zoom lens for changing a magnification of the subject; a focus lens for focusing the subject; A predetermined range in a horizontal direction and a vertical direction on a video signal is selected according to a skin color detection unit that detects a skin color region, and a magnification ratio of the zoom lens and a focus position of the focus lens. Selecting means, comparing means for comparing the size of the range selected by the selecting means with the horizontal and vertical sizes of the flesh color area detected by the flesh color detecting means, When a comparison result is obtained that the horizontal and vertical sizes of the skin color area detected by the detecting means are within the range selected by the selecting means. Means for detecting the skin color area as a human face. 24. A video signal processing apparatus for processing a video signal obtained by photographing a subject, comprising: a zoom lens for changing a magnification of the subject; a focus lens for focusing the subject; Skin color detection means for detecting a skin color area, area setting means for setting an area whose size is predetermined according to the magnification of the zoom lens and the in-focus position of the focus lens,
Selecting means for selecting a range of a predetermined size within an area set by the area setting means according to an enlargement magnification of the zoom lens and an in-focus position of the focus lens; Comparison means for comparing the size of the selected range and the size of the skin color area detected by the skin color detection means, by the comparison means,
Means for detecting that the skin color area is a human face when a comparison result that the size of the skin color area detected by the skin color detection means is within the range selected by the selection means is obtained; A video signal processing device comprising: 25. A video signal processing apparatus for processing a video signal obtained by photographing a subject, comprising: a zoom lens for changing a magnification of the subject; a focus lens for focusing the subject; A flesh-color detecting means for detecting a flesh-color area; a selecting means for selecting a range of a predetermined size on a video signal according to a magnification of the zoom lens and a focus position of the focus lens; Correlation value calculation means for calculating a correlation value between the size of the range selected by the selection means and the size of the skin color area detected by the skin color detection means; and a correlation value equal to or greater than a predetermined value calculated by the correlation value calculation means Means for detecting the detected skin color area as a human face. 26. A video signal processing apparatus for processing a video signal obtained by photographing a subject, comprising: a zoom lens for changing a magnification of the subject; a focus lens for focusing the subject; Skin color detecting means for detecting a skin color area; determining means for determining a human face in a video signal based on the skin color area obtained from the skin color detecting means; Means for changing the gain of the color difference signal only in the face area of the video signal. 27. A video signal processing apparatus for processing a video signal obtained by photographing a subject, comprising: a zoom lens for changing a magnification of the subject; a focus lens for focusing the subject; Skin color detecting means for detecting a skin color area; determining means for determining a human face in a video signal based on the skin color area obtained from the skin color detecting means; Means for increasing the gain of the luminance signal only in the face region of the video signal. 28. A video signal processing apparatus for processing a video signal obtained by photographing a subject, comprising: a zoom lens for changing a magnification of the subject; a focus lens for focusing the subject; Skin color detecting means for detecting a skin color area; determining means for determining a human face in a video signal based on the skin color area obtained from the skin color detecting means; Means for changing the gain of the aperture correction signal only in the face region of the video signal. 29. A video signal processing apparatus for processing a video signal obtained by photographing a subject, comprising: a zoom lens for changing an enlargement magnification of the subject; a focus lens for focusing the subject; Skin color detecting means for detecting a skin color area; determining means for determining a human face in a video signal based on the skin color area obtained from the skin color detecting means; Means for changing the frequency characteristic of the aperture correction signal only in the face area of the video signal. 30. A video signal processing apparatus for processing a video signal obtained by photographing a subject, comprising: a zoom lens for changing a magnification of the subject, a focus lens for focusing the subject, and a focus lens for focusing the subject. Focusing area setting means for setting a focusing area; control means for controlling the focus lens so that the obtained video signal is focused in the set focusing area; and a skin color area in the obtained video signal. Skin color detecting means for detecting, and discriminating means for discriminating a person's face from the skin color area detected by the skin color detecting means, wherein the in-focus area setting means, A video signal processing apparatus characterized in that a skin color area determined to be a face is set as a focus area. 31. A video signal processing apparatus for processing a video signal obtained by photographing a subject, a zoom lens for changing a magnification of the subject, a focus lens for focusing the subject, and a light source for measuring the amount of incident light. Photometric area setting means for setting a photometric area, iris for adjusting the amount of incident light so as to keep the level of the video signal in the set photometric area constant, and iris control means for controlling the opening of the iris. Skin color detection means for detecting a skin color area in the video signal, and a determination means for determining a human face from the skin color area detected by the skin color detection means,
The video signal processing device, wherein the photometric area setting means is configured to set a skin color area determined to be a human face as a photometric area according to a result of the determination by the determining means. 32. A video signal processing apparatus for processing a video signal obtained by photographing a subject, a zoom lens for changing a magnification of the subject, a focus lens for focusing the subject, and a gain of the obtained video signal. A photometric area setting means for setting a photometric area for controlling the constant, and an automatic gain control means for controlling the gain of the video signal so that the level of the video signal in the set photometric area is constant. A skin color detecting means for detecting a flesh color area in the video signal; and a judging means for judging a human face from the flesh color area detected by the flesh color detecting means, wherein the photometric area setting means comprises a judgment result of the judging means. A video signal processing device configured to set a skin color area determined to be a human face as a photometric area in accordance with the following. 33. A video signal processing apparatus for processing a video signal obtained by photographing a subject, comprising: a zoom lens for changing a magnification of the subject; a focus lens for focusing the subject; Photometric area setting means for setting the photometric area, automatic electronic shutter speed adjusting means for changing the shutter speed so as to keep the level of the video signal in the set photometric area constant, and detecting a flesh color area in the obtained video signal Skin color detecting means, and discriminating means for discriminating a human face from the skin color area detected by the skin color detecting means, wherein the photometric area setting means detects a human face in accordance with the discrimination result of the discriminating means. A video signal processing apparatus characterized in that a flesh color area determined to be present is set as a photometric area. 34. A video signal processing apparatus for processing a video signal obtained by photographing a subject, comprising: a zoom lens for changing a magnification of the subject, a focus lens for focusing the subject, and a focus lens for focusing the subject. Focusing area setting means for setting a focusing area; control means for controlling the focus lens so that the obtained video signal is focused in the set focusing area; and a skin color area in the obtained video signal. A skin color detecting means for detecting, a discriminating means for discriminating a human face from the flesh color area detected by the flesh color detecting means, and a low-pass filter to which a signal of a discrimination result of the discriminating means is input; The setting means is configured to set an area of a range smaller than a predetermined threshold value in the output signal of the low-pass filter as a focusing area. Video signal processing device. 35. A video signal processing apparatus for processing a video signal obtained by photographing a subject, a zoom lens for changing a magnification of the subject, a focus lens for focusing the subject, and a photo lens for measuring an incident light amount. Photometric area setting means for setting a photometric area, iris for adjusting the amount of incident light so as to keep the level of the video signal in the set photometric area constant, and iris control means for controlling the opening of the iris. Skin color detecting means for detecting a flesh color area in a video signal, a discriminating means for discriminating a human face from the flesh color area detected by the flesh color detecting means, and a low-pass filter to which a signal of a discrimination result of the discriminating means is inputted The photometric area setting means sets an area of the output signal of the low-pass filter that is larger than a predetermined threshold as a photometric area. A video signal processing device characterized in that the video signal processing device is configured to determine 36. A video signal processing apparatus for processing a video signal obtained by photographing a subject, a zoom lens for changing a magnification of the subject, a focus lens for focusing the subject, and a gain of the obtained video signal. A photometric area setting means for setting a photometric area for controlling the constant, and an automatic gain control means for controlling the gain of the video signal so that the level of the video signal in the set photometric area is constant. A skin color detecting means for detecting a flesh color area in the video signal, a judging means for judging a human face from the flesh color area detected by the flesh color detecting means, and a low-pass filter to which a signal of the judgment result of the judging means is inputted. Wherein the photometric area setting means sets an area of a range larger than a predetermined threshold in the output signal of the low-pass filter as a photometric area. A video signal processing device comprising: 37. A video signal processing apparatus for processing a video signal obtained by photographing a subject, a zoom lens for changing a magnification of the subject, a focus lens for focusing the subject, and a photometer for measuring an incident light amount. Photometric area setting means for setting the photometric area, automatic electronic shutter speed adjusting means for changing the shutter speed so as to keep the level of the video signal in the set photometric area constant, and detecting a flesh color area in the obtained video signal And a low-pass filter to which a signal of a result of the discrimination by the discrimination means is inputted, wherein the photometric area setting means is provided. Is configured to set, as a photometric area, an area of a range larger than a predetermined threshold value in the output signal of the low-pass filter. A video signal processing device characterized in that: 38. A video signal processing apparatus for processing a video signal obtained by photographing a subject, comprising: a zoom lens for changing a magnification of the subject, a focus lens for focusing the subject, and a focus lens for focusing the subject. Focusing area setting means for setting a focusing area; control means for controlling the focus lens so that the obtained video signal is focused in the set focusing area; and a skin color area in the obtained video signal. A skin color detecting means for detecting, a determining means for determining a human face from the skin color area detected by the skin color detecting means, and a calculating means for adding a predetermined value to the determination result of the determining means; The video signal processing device, wherein the setting means is configured to set an area of an output range of the calculating means as a focus area. 39. A video signal processing apparatus for processing a video signal obtained by photographing a subject, a zoom lens for changing a magnification of the subject, a focus lens for focusing the subject, and a light source for measuring an incident light amount. Photometric area setting means for setting a photometric area, iris for adjusting the amount of incident light so as to keep the level of the video signal in the set photometric area constant, and iris control means for controlling the opening of the iris. Means for detecting a flesh-color area in the video signal, a discriminating means for discriminating a human face from the flesh-color area detected by the flesh-color detecting means, and a calculating means for subtracting a predetermined value from the discrimination result of the discriminating means Wherein the photometric area setting means is configured to set an area of the output range of the calculating means as a photometric area. No. processing unit. 40. A video signal processing apparatus for processing a video signal obtained by photographing a subject, a zoom lens for changing a magnification of the subject, a focus lens for focusing the subject, and a gain of the obtained video signal. A photometric area setting means for setting a photometric area for controlling the constant, and an automatic gain control means for controlling the gain of the video signal so that the level of the video signal in the set photometric area is constant. Skin color detecting means for detecting a skin color area in a video signal, determining means for determining a human face from the skin color area detected by the skin color detecting means, and calculating means for subtracting a predetermined value from the determination result of the determining means; A video signal processing device, wherein the photometric area setting means is configured to set an area of an output range of the arithmetic means as a photometric area. 41. A video signal processing apparatus for processing a video signal obtained by photographing a subject, comprising: a zoom lens for changing a magnification of the subject; a focus lens for focusing the subject; Photometric area setting means for setting the photometric area, automatic electronic shutter speed adjusting means for changing the shutter speed so as to keep the level of the video signal in the set photometric area constant, and detecting a flesh color area in the obtained video signal And a calculating means for subtracting a predetermined value from a result of the determination by the determining means, wherein the photometric area setting means comprises: a skin color detecting means for determining a human face from the skin color area detected by the skin color detecting means; Is a video signal processing device, wherein an area of an output range of the calculating means is set as a photometric area. 42. A color video camera for recording a video signal by photographing a subject by remote control, a zoom lens for changing the magnification of the subject, a focus lens for focusing the subject, a remote controller, and the remote controller. A receiver that receives a signal emitted from the operation device, a skin color detection unit that detects a skin color region in the obtained video signal, and a determination unit that determines a human face based on the skin color region detected by the skin color detection unit. In the case of starting or recording a video signal obtained by shooting, if a human face is not identified in the obtained video signal, the recording of the video signal is not started or the recording is stopped. A color video camera. 43. In a color video camera for photographing a subject by remote control and recording a video signal, a zoom lens for changing the magnification of the subject, a focus lens for focusing the subject, a remote controller, and the remote controller A receiving circuit that receives a signal emitted from the operation device, a skin color detecting unit that detects a skin color region in the obtained video signal, and a determining unit that determines a human face based on the skin color region detected by the skin color detecting unit. Means for notifying a photographer of an erroneous recording if a human face is not determined in the obtained video signal when starting or recording a video signal obtained by shooting. A color video camera characterized in that: 44. A color video camera for photographing a subject by remote control and recording a video signal on a tape,
A zoom lens that changes the magnification of the subject, a focus lens that focuses the subject, a remote controller, a receiver that receives a signal emitted from the remote controller, and signal generation means that generates a predetermined detection signal. A skin color detecting means for detecting a flesh color area in the obtained video signal, a determining means for determining a human face based on the flesh color area detected by the flesh color detecting means, and recording of a video signal obtained by shooting. Means for recording a detection signal generated by the signal generation means on a tape if a human face is not identified in the obtained video signal when starting or when recording is being performed. Characteristic color video camera. 45. A color video camera for recording a video signal by photographing a subject by remote control, a zoom lens for changing the magnification of the subject, a focus lens for focusing the subject, a remote controller, A receiver for receiving a signal emitted from the operating device, a window generating means for generating a window pulse that varies depending on the distance to the subject and the magnification of the subject, and a flesh color detecting means for detecting a flesh color area in the obtained video signal Determining means for determining a human face based on the skin color region detected by the skin color detecting means; and a window generating means for starting or recording a video signal obtained by shooting. If the human face is not identified in the video signal within the image frame defined by, the recording of the video signal is not started or the recording is stopped. A color video camera. 46. A color video camera for photographing a subject by remote control and recording a video signal, wherein a zoom lens for changing the magnification of the subject, a focus lens for focusing the subject, a remote controller, and the remote controller A receiver for receiving a signal emitted from the operating device, a window generating means for generating a window pulse that varies depending on the distance to the subject and the magnification of the subject, and a flesh color detecting means for detecting a flesh color area in the obtained video signal Determining means for determining a human face based on the skin color region detected by the skin color detecting means; and a window generating means for starting or recording a video signal obtained by shooting. Means for notifying the photographer of an erroneous recording if a human face is not identified in the video signal within the image frame defined by Characteristic color video camera. 47. A color video camera for photographing a subject by remote control and recording a video signal on a tape,
A zoom lens that changes the magnification of the subject, a focus lens that focuses the subject, a remote controller, a receiver that receives a signal emitted from the remote controller, a distance to the subject, and a magnification of the subject. A window generating means for generating a changing window pulse, a signal generating means for generating a predetermined detection signal, a flesh color detecting means for detecting a flesh color region in the obtained video signal, and a flesh color detecting means. Discriminating means for discriminating a person's face by a skin color region; and when recording or starting recording of a video signal obtained by shooting, a video signal in an image frame defined by the window generating means is included. Means for recording, on a tape, a detection signal generated by the signal generation means if a human face is not identified. Okamera.