JP2001061095A - Image pickup device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect motion of a target object with high accuracy at low cost by providing a motion discriminating part to compare changed quantity of a distance signal outputted from a focusing signal processing part with a preset reference of the changed amount of distance and to judge the motion of the image from the comparison result. SOLUTION: Light outputted from a light emitting element 11 is made incident to an object through a lens 10 for focusing, reflected light passes through the lens 10, an image is formed on a light receiving element 11 having converted into an electric signal. Next, the distance to the object is detected from the signal outputted from the light receiving element 11 in the focusing signal processing part 12, the distance is compared with the preset value (reference) and the changed amount of the distance is calculated in a distance detecting part 13. A focus evaluation value and the changed amount of the distance calculated by a motion detecting part 8 and the distance detecting part 13 are inputted to the motion discriminating part 9 and the target object is judged whether it is moved or not. Thus, the motion of the target object is detected with high accuracy and at low cost.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image pickup apparatus having a black-and-white or color light receiving section, and more particularly to an image pickup apparatus having a function of determining a change in a subject.

[0002]

2. Description of the Related Art FIG.
FIG. 1 is a block diagram illustrating a configuration of a conventional imaging device disclosed in Japanese Patent Application Publication No. 0-0. In FIG. 18, 1 is an imaging lens, 2 is an imaging device that converts an optical image formed by the imaging lens into an electric signal, 3 is an imaging device driving circuit that drives the imaging device 2, and 4 is an imaging device from the imaging lens 1 to the imaging device 2. A light amount control unit that adjusts the amount of light incident on the device, a signal processing unit that converts an output signal of the image sensor 2 into a video signal, and 6 controls an output signal of the signal processing unit 5 to a video signal of an appropriate level. Gain control section,
Reference numeral 7 denotes a focus signal detection unit that extracts a luminance signal from a video signal output from the signal processing unit 5 and generates a focus signal. 8 denotes motion detection that detects a change amount of the video signal from an output signal of the focus signal detection unit 7. Unit 9 is a motion detecting unit 8
Is a motion identification unit that detects the motion of the subject from the output signal.

Next, the operation of the conventional device will be described. An optical image incident through the imaging lens 1 is converted into an electric signal by the imaging device 2. At this time, the light amount control unit 4
Is an auto light control circuit (hereinafter referred to as an ALC circuit) that detects an output signal of the image sensor 2 and adjusts the amount of incident light to an appropriate level for a subject to be imaged.
Works as Next, the signal output from the image sensor 2 is amplified by the signal processing unit 5 and output as a video signal of an appropriate level. Gain control unit 6
Operates as an automatic gain control circuit (hereinafter, referred to as an AGC circuit) that controls the degree of amplification of the signal processing unit 5 so that the output signal of the signal processing unit 5 always has an appropriate level. Further, the focus signal detection unit 7 extracts a focus signal for calculating a degree of focusing on a subject as a luminance signal component from the signal output from the signal processing unit 5. The motion detector 8 calculates an evaluation value for the motion of the subject from the focus signal output from the focus signal detector 7. The motion identification unit 9 determines whether or not the target subject has moved based on the focus evaluation value calculated by the motion detection unit 8.

As described above, by changing the criterion of the focus evaluation value in the image area being picked up, it is possible to detect the motion of the target object.

[0005]

Since the conventional imaging apparatus is configured as described above, when securing a video signal of a specific event for security use or the like, all movements within the imaging range or the detection range are detected. Thus, even a video signal of an unnecessary event is secured. For example, if you want to secure only the events that move in the room, and if there is a window in the imaging range, it also detects the movement of the tree outside the window, so secure many images other than the events that are actually needed. As a result, there is a problem that the detection accuracy for a truly necessary event is reduced.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an inexpensive imaging apparatus capable of detecting a distance to a subject in an imaging apparatus main body and accurately detecting a movement of a target subject. The purpose is to obtain. Another object of the present invention is to set a detection range in three dimensions, thereby extracting only a target movement of a subject and outputting a trigger signal to the outside. An object of the present invention is to provide an inexpensive imaging device which does not require an additional circuit such as a memory unit for detecting a change in a subject in three dimensions.

[0007]

An image pickup apparatus according to the present invention has an image pickup lens, an image pickup element having a light receiving section for converting an optical image formed by the image pickup lens into an electric signal, and a drive of the image pickup element. An image sensor driving unit, and a signal processing unit that converts an output signal of the image sensor into a video signal,
A gain control unit that attenuates or amplifies an output signal of the signal processing unit to an appropriate level; and a focus signal indicating a degree of focusing on a subject from a video signal adjusted to an appropriate signal level by the gain control unit. A focus signal detecting section, a motion detecting section for detecting a change amount of the focus signal, a light emitting element and a light receiving element for distance measurement, and a light measuring element for diffusing light of the light emitting element and condensing light reflected by a subject. A distance lens, a distance measurement signal processing unit that calculates a distance to a subject from a signal obtained from the light receiving element, and a change amount of a focus signal output from the motion detection unit is compared with a preset focus reference value. In both cases, the amount of change in the distance signal output from the ranging signal processing unit is compared with a previously set distance change amount reference value, and a motion recognition for judging the movement of the image based on the comparison result. In which and a part.

According to another aspect of the present invention, there is provided an image pickup apparatus including an image pickup lens, a light receiving section for converting an optical image formed by the image pickup lens into an electric signal, and an infrared irradiation device for emitting infrared light. An image pickup device driving unit that drives the infrared image pickup device and the infrared irradiation device, a signal processing unit that converts an output signal of the infrared image pickup device into a video signal, and attenuates an output signal of the signal processing unit to an appropriate level. Or a gain control unit for amplifying, a focus signal detection unit for detecting a focus signal representing a degree of focusing on a subject from a video signal adjusted to an appropriate signal level by the gain control unit, and a change amount of the focus signal. A motion detection unit that detects the distance, a light emitting element and a light receiving element for distance measurement, and a distance measuring lens that diffuses the light of the light emitting element and collects light reflected by the subject, A distance measurement signal processing unit for calculating a distance to a subject from a signal obtained from the light receiving element; comparing a change amount of a focus signal output by the motion detection unit with a preset focus reference value; A motion identification unit that compares the change amount of the distance signal output from the signal processing unit with a preset distance change amount reference value and determines the motion of the video based on the comparison result.

[0009] In one embodiment, the motion discrimination section is configured to determine whether the change amount of the focus signal is larger than the focus reference value or the value of the distance signal is larger than the distance change amount reference value. , It is determined that there is movement of the video.

[0010] In another embodiment, the motion discrimination unit is configured to determine whether the change amount of the focus signal is larger than the focus reference value and the value of the distance signal is larger than the distance change amount reference value. , It is determined that there is movement of the video.

Further, an image pickup apparatus according to the present invention has an image pickup lens provided with an image pickup lens, a light receiving section for converting an optical image formed by the image pickup lens into an electric signal, and an image pickup element drive for driving the image pickup element. Unit, a signal processing unit that converts an output signal of the image sensor into a video signal, a gain control unit that attenuates or amplifies the output signal of the signal processing unit to an appropriate level, and an appropriate signal level by the gain control unit. A color signal detector for detecting a color component from a video signal adjusted to a distance, a light emitting element and a light receiving element for distance measurement, and a distance measuring lens for diffusing light of the light emitting element and condensing light reflected by a subject And a ranging signal processing unit that calculates the distance to the subject from the signal obtained from the light receiving element, and compares the detected amount of change in the color signal with a previously set color reference value. Out Compared with the distance change amount reference value preset amount of change in the distance signal, in which and a motion identification unit for determining the motion of a video image from their comparison results.

[0012] In still another embodiment, the motion discrimination unit is configured to determine whether the change amount of the color signal is larger than the color reference value or the value of the distance signal is larger than the distance change amount reference value. Is determined to have video motion.

[0013] In still another embodiment, the motion discrimination unit is configured to determine whether the change amount of the color signal is larger than the color reference value and the value of the distance signal is larger than the distance change amount reference value. Is determined to have video motion.

Still further, an image pickup apparatus according to the present invention comprises:
An imaging lens, an imaging device including a light receiving unit that converts an optical image formed by the imaging lens into an electric signal, an imaging device driving unit that drives the imaging device, and an output signal of the imaging device to a video signal. A signal processing unit for converting, a gain control unit for attenuating or amplifying an output signal of the signal processing unit to an appropriate level, a light emitting element and a light receiving element for distance measurement, and light of the light emitting element is diffused and reflected by a subject A distance measuring lens that collects the reflected light, a distance measuring signal processing unit that calculates the distance to the subject from a signal obtained from the light receiving element, and a change amount of the distance signal output from the distance measuring signal processing unit. A motion identification unit for comparing with a previously set distance change amount reference value, and determining that there is a movement in the optical axis direction of the video if the change amount of the distance signal is larger than the distance change amount reference value. Things.

According to another aspect of the present invention, there is provided an image pickup device including an image pickup lens, a light receiving portion for converting an optical image formed by the image pickup lens into an electric signal, and an image pickup device driving the image pickup device. Unit, a signal processing unit that converts an output signal of the image sensor into a video signal, a gain control unit that attenuates or amplifies the output signal of the signal processing unit to an appropriate level, a light emitting element and a light receiving element for distance measurement A distance measuring lens for diffusing the light of the light emitting element and condensing the light reflected by the object; a distance measuring signal processing unit for calculating a distance to the object from a signal obtained from the light receiving element; The value of the distance signal output from the signal processing unit is compared with a preset distance reference value.If the distance signal is larger than the distance reference value, it is determined that there is video motion in a direction orthogonal to the optical axis direction. Movement to judge It is intended and a separate unit.

Further, the image pickup apparatus includes a field-of-view detection range setting unit that can change a detection range of the motion detection unit with respect to the field of view in advance from an image captured by the image pickup device, and a distance of the motion detection operation of the object in advance. A distance detection range setting unit capable of setting a range, wherein the motion detection unit generates an output signal only from a predetermined range set by the visual field detection range setting unit and the distance detection range setting unit. Then, the motion discriminating unit determines from this signal whether or not the image of the target subject has moved within the predetermined range.

Further, the motion discriminating section has a motion parameter setting section and a distance parameter setting section capable of changing a reference value for judging the presence or absence of motion of a target subject.

The light-emitting element and the light-receiving element for distance measurement are respectively constituted by an infrared light-emitting element and an infrared light-receiving element. Detecting an imaging environment such as lighting conditions, comparing a luminance signal with a luminance reference value previously set in a level setting unit, and when the luminance signal is lower than the luminance reference value, only an output signal from the distance detection unit. Is used to determine the presence or absence of video motion.

Further, according to the image pickup apparatus of the present invention, instead of the distance measuring lens for diffusing the light of the light emitting element for distance measurement and the light emitting element of the light receiving element and condensing the light reflected by the subject, An imaging lens for signal imaging is commonly used.

Further, the image pickup apparatus according to the present invention comprises:
The apparatus further includes a motion identification unit that outputs a trigger signal that is a determination signal of the presence or absence of the movement of the target subject, and a trigger signal synthesis unit that synthesizes a video signal and the trigger signal, wherein the trigger signal synthesis unit includes The trigger signal is superimposed on the signal and output.

The trigger signal synthesizing section superimposes the trigger signal on the video signal and outputs the signal, and determines whether the intended movement of the subject is in the distance direction, the horizontal or vertical direction of the video, or The information on whether they are both is also output at the same time.

[0022]

Embodiments of the present invention will be described below with reference to the accompanying drawings. Embodiment 1 FIG. FIG. 1 is a block diagram showing an imaging apparatus according to Embodiment 1 of the present invention. In this figure, 1
Is an imaging lens, 2 is an imaging device that converts an optical image formed by the imaging lens into an electric signal, 3 is an imaging device driving circuit that drives the imaging device 2, and 4 is light of light incident on the imaging device 2 from the imaging lens 1. A light amount control unit for adjusting the amount; a signal processing unit for converting an output signal of the image sensor 2 into a video signal;
Is a gain control unit that controls the output signal of the signal processing unit 5 to a video signal of an appropriate level, and 7 is a focus signal detection unit that extracts a luminance signal from the video signal output from the signal processing unit 5 and generates a focus signal. Reference numeral 8 denotes a motion detection unit for detecting a change amount of a video signal from an output signal of the focus signal detection unit 7, reference numeral 11 denotes a light-emitting and light-receiving element for distance measurement, and reference numeral 10 denotes light reflected by a subject by diffusing light from the light-emitting element 11a. A focusing lens, 12 a ranging signal processing unit for calculating the distance to the subject from a signal output from the light receiving element 11b, and 13 a video signal in the optical axis direction of the image from the output signal of the ranging signal processing unit 12. A distance detecting section 9 for detecting the amount of change is a motion identifying section for comparing the values of the signals output from the motion detecting section 8 and the distance detecting section 13 with a preset reference value to determine the presence or absence of a video motion. is there.

Next, the operation of the first embodiment will be described. An optical image incident through the imaging lens 1 is converted into an electric signal by the imaging device 2. At this time, the light amount control unit 4
A detects the output signal of the image sensor 2 and adjusts the amount of incident light to an appropriate level for the subject to be imaged.
It operates as an LC circuit. Next, the signal output from the image sensor 2 is amplified by the signal processing unit 5 and output as a video signal of an appropriate level. Then, the output signal of the signal processing unit 5 is controlled by the gain control unit 6 so as to always have an appropriate level. At this time, the gain control unit 6 operates as an AGC circuit that controls the degree of amplification of the signal processing unit 5. The signal output from the signal processing unit 5 is processed by the focus signal detection unit 7, and a focus signal for calculating the degree of focusing on the subject is extracted as a luminance signal component. Then, from the focus signal output from the focus signal detection unit 7, the motion detection unit 8 calculates an evaluation value for the motion of the subject. The details will be described later.

The light output from the light emitting element 11a enters the subject through the distance measuring lens 10a, and the reflected light forms an image on the light receiving element 11b through the distance measuring lens 10b and is converted into an electric signal. Next, the distance of the subject is detected by the distance measurement signal processing unit 12 from the signal output from the light receiving element 11b, and the distance detection unit 13 compares the distance with a preset value (reference value) to determine the amount of change in the distance. calculate. The focus evaluation value and the change amount of the distance calculated by the motion detecting unit 8 and the distance detecting unit 13 are input to the motion identifying unit 9, where it is determined whether or not the target subject has moved.

Here, the operation of the focus signal detecting section 7 and the motion detecting section 8 will be described in detail with reference to FIGS. FIG. 2 is a diagram illustrating details of the focus signal detection unit 7. In this figure, 14 is a low-pass filter for removing a color signal component from the output signal of the signal processing unit 5, 15 is a horizontal aperture signal generation unit for extracting a frequency component of a specific band from the output signal of the low-pass filter 14, 16 Is a vertical aperture signal generator for extracting a vertical frequency component from the output signal of the low-pass filter 14;
Reference numerals 7 and 18 denote a horizontal aperture signal control unit and a vertical aperture signal control unit for adjusting output signals of the horizontal aperture signal generation unit 15 and the vertical aperture signal generation unit 16 to appropriate levels, respectively, and 19 denotes a horizontal aperture signal control unit 17.
And a focus signal generation unit that outputs a focus signal indicating a degree of focusing on a target subject from an output signal of the vertical aperture signal control unit 18.

FIG. 3 is a diagram showing the details of the motion detecting section 8. In this figure, reference numeral 20 denotes a focus signal generation unit 19
A / D that converts the analog output signal of
A converter, 21 is an integrating circuit for integrating the output signal of the A / D converter 20, 22 is a time counting unit for setting a time constant of the integrating circuit 21, and 23 is a temporal signal of the focus signal based on the output signal of the integrating circuit 21. The focus evaluation value calculation unit calculates a focus evaluation value indicating a change (specifically, a difference value between a previous output signal of the integration circuit 21 and a current output signal).

Next, the operation of the light emitting and receiving element 11, the distance measuring signal processing unit 12, and the distance detecting unit 13 will be described with reference to FIGS.
This will be described in detail with reference to FIGS. FIG. 4 is a diagram showing the periphery of the light emitting and light receiving element 11. In this figure, light emitted from a light emitting element 11a is
The object I passes through 0a. Then, the light applied to the subject I is condensed on the light receiving element 11 by the distance measuring lens 10b to form an image. Next, in FIG. 5, the light receiving element 11b
A position R serving as a reference for distance measurement is set above, and the light receiving element 1 is set.
Distance d between the position r where the light is focused and imaged at 1 and the reference position R
Is detected by the distance measurement signal processing unit 12, so that the subject I
Can be detected. That is, through experiments and the like,
A light receiving point (reference position R) on the light receiving element 11b with respect to the subject separated by a predetermined distance from the light emitting element 11a is obtained, and the distance from the light emitting element 11a to the subject is calculated in advance based on the distance d from the reference position R.

Next, the operation of the distance detecting unit 13 will be described with reference to FIG.
This will be described with reference to FIG. The distance value to the subject output from the ranging signal processing unit 12 is output after being delayed by the time memory circuit 24 set in advance by the time counting unit 25. Next, the distance value output from the distance measurement signal processing unit 12 and the distance value output from the memory circuit 24 are compared with the distance change amount calculation unit 2.
6, and outputs the amount of change as a distance evaluation value.

FIG. 7 is a diagram showing details of the motion discriminating section 9. In this figure, reference numeral 27 denotes a motion parameter setting unit for setting the detection sensitivity to the motion of the subject; 28, a motion comparator for comparing the output signal of the motion parameter setting unit 27 with the output of the motion detection unit 8; A distance parameter setting unit for setting detection sensitivity to a change, 30 is a distance comparator for comparing an output signal of the distance parameter setting unit 29 with an output of the distance detection unit 13, and 32 is an output signal of the motion comparator 28 and a distance comparator. A determination unit 30 identifies the movement of the target subject. Reference numeral 31 denotes a microcomputer that controls the movement parameter setting unit 27, the distance parameter setting unit 29, and the determination unit 32.

The motion parameter setting section 27 stores a reference pattern for detecting a motion in response to a change in the output signal of the motion detecting section 8. The reference pattern is a specific gravity at the time of motion detection with respect to the image area being imaged. For example, the peripheral portion of the imaged area has a lighter specific gravity at the time of detection, and the central portion has a higher specific gravity. Is stored. The motion comparator 28 compares the output signal of the motion detection unit 8 with the pattern stored in the motion parameter setting unit 27, and outputs the difference value as a signal indicating the degree of motion.

The distance parameter setting section 29 stores a reference pattern for detecting a distance in response to a change in the output signal of the distance detecting section 13. This reference pattern is a specific gravity at the time of distance detection with respect to the image area being imaged,
For example, a process is performed such that a specific gravity at the time of detection is light in a long-distance portion of an imaging range, and a specific gravity is increased in a short-distance portion. The distance comparator 30 compares the output signal of the distance detection unit 13 with the pattern stored in the distance parameter setting unit 29, and outputs the difference value as a signal indicating the degree of distance variation.

The judging section 32 judges from the output signal of the motion comparator 28, the output signal of the distance comparator 30, and the output signal of the microcomputer 31, such as condition setting, whether or not the target object has actually moved. . That is, the determination unit 32 determines the threshold value of the motion signal (the focus reference value in the present embodiment) and the predetermined threshold value of the distance change amount (the reference value of the distance change amount in the present embodiment) set by the microcomputer 31. The output signal of the distance comparator 30 is compared with the output signal of the distance comparator 30 when the output signal of the motion comparator 28 and the output signal of the distance comparator 30 exceed the threshold value of the motion signal and the threshold value of the distance change amount, respectively. It is determined that the subject has moved. Note that, if necessary, if the output signal of the motion comparator 28 exceeds the threshold value of the motion signal or if the output signal of the distance comparator 30 exceeds the threshold value of the distance change amount, the determination unit 32 You may comprise so that it may judge that there was a movement.

Next, referring to FIG.
The operation of will be described. In the signal output from the signal processing unit 5, a chrominance signal component is multiplexed in addition to the luminance signal component. The low-pass filter 14 removes a modulated and multiplexed color signal component and extracts only a luminance signal component that is a low-frequency component. For the output signal of the low-pass filter 14, the horizontal aperture signal generator 15 and the vertical aperture signal generator 16 detect the horizontal frequency component and the vertical frequency component of the video signal of the target subject, and detect the target subject. Is extracted. The horizontal aperture signal control unit 17 and the vertical aperture signal control unit 18 adjust the output signals of the horizontal aperture signal generation unit 15 and the vertical aperture signal generation unit 16 to appropriate levels. Further, the focus signal generation unit 19 includes the horizontal aperture signal control unit 1.
7 and the output signals of the vertical aperture signal control unit 18 are synthesized, and a focus signal is output as a pattern signal of a target subject.

Next, the operation of the motion detector 8 will be described with reference to FIG. The A / D converter 20 converts the focus signal output from the focus signal generator 19 of the focus signal detector 7 into a digital (binary) signal. The integration circuit 21 integrates the time-varying focus signal output from the A / D converter 20 for a certain period of time under the control of the time counter 22, and calculates the amount of integration per unit time. Further, the focus evaluation value calculation unit 23 converts a focus evaluation value signal (a difference value between the previous output signal of the integration circuit 21 and the current output signal) indicating the focus state of the focus signal from the output signal of the integration circuit 21. calculate. When capturing an image of a subject, the focus is first set on the target subject, so that a change in the focus evaluation value indicates the movement of the target subject. By calculating the evaluation value as described above, it is possible to detect the presence or absence of the movement of the subject.

Next, the operation of the light emitting and receiving element 11 will be described with reference to FIGS. In FIG. 4, light such as infrared light is emitted from the light emitting element 11a, and the diffused light is converted into parallel rays by the distance-measuring lens 10a to irradiate the subject I with spot-shaped light. Next, the light applied to the subject I is passed through the distance-measuring lens 10b,
Focus on top. As shown in FIG. 4, when the distance to the subject I changes, the position where light is condensed on the light receiving element 11b also changes accordingly. Next, as shown in FIG. 5, the position r of the light condensed on the light receiving element 11b by the above operation is converted into an electric signal by photoelectric conversion, and the position r is set on the light receiving element 11b as a reference for distance measurement. Distance, ie the amount of change d
Is detected. From the amount of change d, the distance from the light emitting element 11a to the subject I can be detected.

Next, the operation of the distance detector 13 will be described with reference to FIG. The distance value to the subject output from the ranging signal processing unit 12 is delayed by the memory circuit 24 by a predetermined time set by the time counting unit 25, and the delayed distance value (ie, the distance value before the predetermined time) ) And the distance value without delay are calculated by the distance change amount calculation unit 26 to detect the change amount of the subject in the distance direction.

Next, the operation of the motion identification section 9 will be described with reference to FIG. The output signal of the motion detector 8 is the motion comparator 2
8 is compared with the reference pattern stored in the motion parameter setting unit 27, and the difference value is output as a signal indicating the degree of motion. The output signal of the distance detection unit 13 is input to the distance comparator 30, where it is compared with the pattern stored in the distance parameter setting unit 29, and the difference value is output as a signal indicating the degree of distance variation. Is done. The output signal of the motion comparator 28 and the output signal of the distance comparator 30 are input to the determination unit 32,
Then, the output signal (focus signal) of the motion comparator 28 is compared with a predetermined threshold (focus reference value) and a predetermined distance threshold (distance change amount reference value) of the motion signal set by the microcomputer 31. If the threshold value (focus reference value) is exceeded and the output signal (distance signal) of the distance comparator 30 exceeds a predetermined distance threshold value (distance change amount reference value), it is determined that the subject has moved. Is determined.

As described above, by changing the criterion for determining the focus evaluation value and the criterion for determining the change in distance in the image area being imaged, it is possible to perform the motion detection with emphasis on the target subject. is there.

Embodiment 2 FIG. 8 is a block diagram showing an imaging apparatus according to Embodiment 2 of the present invention. In the second embodiment, an infrared imaging device 57 is used instead of the imaging device 2 in the first embodiment, and the imaging device driving circuit 3
And an infrared irradiating device 56 driven by the above is newly provided. The other configuration is the same as that of the first embodiment.

Next, the operation of the second embodiment will be described. The infrared irradiation device 56 driven by the imaging element driving circuit 3 irradiates infrared rays toward an imaging range. This infrared light is reflected by the subject, enters the imaging lens 1, is photoelectrically converted by the infrared imaging element 57, and is converted into an electric signal. The signal converted into the electric signal is subjected to the same processing as in the first embodiment, and the focus detection value is output from the motion detection unit 8.

The light output from the light emitting element 11 enters the subject through the lens 10 for distance measurement, and the light reflected by the object passes through the lens 10 for distance measurement and the light receiving element 11
The light is then photoelectrically converted and converted into an electric signal. The signal converted into the electric signal is subjected to the same processing as in the first embodiment, and the distance detector 13 outputs a distance change amount.

The motion discriminating unit 9 performs the same processing as in the first embodiment based on the focus evaluation value calculated by the motion detecting unit 8 and the distance detecting unit 13 and the amount of change in the distance to determine whether the target subject has moved. Is determined.

As described above, the provision of the infrared irradiating device and the infrared-sensitive imaging device allows the best image to be obtained even when the environment in which the image is being taken is dark, and the brightness and the like of the target object. It is possible to perform motion detection independent of the imaging environment.

Embodiment 3 FIG. FIG. 9 is a block diagram showing an imaging apparatus according to Embodiment 3 of the present invention. In the third embodiment, a color signal detector 33 is provided instead of the focus signal detector 7 of the first embodiment.
Is a configuration diagram showing details of the color signal detection unit 33, and FIG. 11 is a configuration diagram showing details of the motion detection unit 8 in the third embodiment. Other configurations of the third embodiment are the same as those of the first embodiment. In FIG. 10, reference numeral 34 denotes a color signal detection circuit for detecting a color signal component from the output signal of the signal processing unit 5;
A color separation circuit for detecting the B color signal;
5, a white balance adjustment circuit for adjusting the white balance from the output signal of the output signal 5;
A color signal calculator for detecting the ratio of each of the R, G, and B color signals from the image signal of the subject after the adjustment in 6; 38, a ratio signal output unit for outputting a ratio signal of each color signal calculated by the color signal calculator 37; It is.

In FIG. 11, reference numeral 39 denotes a color signal detecting unit 3;
An A / D converter for converting the output signal from the ratio signal output unit 38 into a digital signal, an integration circuit 40 for integrating the output signal of the A / D converter 39, and a time constant 41 of the integration circuit 40 A time counting unit 42 calculates a color signal evaluation value for calculating a temporal change of a ratio signal of a color signal (a difference value between a current output signal of the integration circuit 40 and a previous output signal) from the output signal of the integration circuit 40. It is an operation unit.

Next, the color signal detection section 33 of the third embodiment
Will be described with reference to FIG. In FIG. 10, a color signal detection circuit 34 detects a modulated color signal multiplexed on an output signal of the signal processing unit 5 and detects a color signal. Next, a color signal detection circuit 34 is provided by a color separation circuit 35.
Is separated into R, G, and B color signal components. Then, the white balance adjustment circuit 36 performs white balance adjustment according to the illumination condition of the subject from the R, G, and B color signal components color-separated by the color separation circuit 35. The R, G, B ratio of the output signal of the color separation circuit 35 after the white balance adjustment is calculated by the color signal calculation unit 37. The calculated result is output from the ratio signal output unit 38 and becomes the color information of the subject. Therefore, the result changes when the target subject moves, and the motion detection unit 8
The movement of the subject is calculated from the ratio of the changed ratio.

Next, the operation of the motion detector 8 will be described with reference to FIG. The A / D converter 39 includes the color signal detector 3
The ratio signal of the color signal output from the ratio signal output unit 38 is converted into a digital signal. The integration circuit 40 integrates the ratio signal of the time-varying color signal under the control of the time measurement unit 41 to calculate the amount of integration per unit time. Also, the color signal evaluation value calculation unit 42 calculates a color signal evaluation value (a difference value between the current output signal and the previous output signal of the integration circuit 40) indicating a change in the ratio of the color signal from the output signal of the integration circuit 40. Is calculated. When capturing an image of a subject, the white balance is adjusted, and the color information of the subject is represented by the ratio of the R, G, and B color signals. A change in the evaluation value of the color information within a unit time indicates the movement of the subject.

The color information evaluation value detected by the color signal evaluation value calculation section 42 is input to the motion identification section shown in FIG. The motion parameter setting unit 27 according to the third embodiment includes:
A reference pattern for determining a change in the output signal of the color signal evaluation value calculation unit 42 is stored. The reference pattern is, for example, a specific gravity at the time of detection with respect to the image area being imaged. The peripheral portion of the imaged area has a lighter specific gravity at the time of detection, and the central portion has a process of increasing the specific gravity. ing. The output signal of the color signal evaluation value calculator 42 is supplied to the motion comparator 28 by the motion parameter setting unit 27.
And outputs the difference value as a signal indicating the degree of movement. The microcomputer 31
A setting signal (color reference value or distance change reference value) such as an imaging condition for determining whether the level of the signal output from the motion comparator 28 is actually a motion of the subject is output.
The output signal of the motion comparator 28 and the output signal of the distance comparator 30 based on the above-described detection of the distance variation are input to the determination unit 32, where the setting output signal of the microcomputer 31 (color reference value or distance change amount reference value). Then, it is determined whether the subject is moving or not, and the subject moving is determined. That is, the output signal (color signal) of the motion comparator 28 exceeds the predetermined color reference value, and the output signal (distance change amount signal) of the distance comparator 30 exceeds the predetermined distance change amount reference value. Then, it is determined that the subject has moved.

As described above, by changing the criterion of the color signal evaluation value in the image area and the determination criterion of the distance variation, it is possible to focus on the target object to perform the motion detection.

Embodiment 4 Hereinafter, an operation of the motion identification unit 9 of the imaging device according to the fourth embodiment of the present invention will be described. In FIG. 7 illustrating the motion discriminating unit 9 according to the first embodiment, the distance parameter setting unit 29 stores a reference pattern for detecting a distance with respect to a change in the output signal of the distance detecting unit 13. . This reference pattern is
For example, it is the specific gravity at the time of detecting the distance to the image area being imaged. For example, the amount of change in the distance of the subject in the optical axis direction is set as a value in advance, and a control signal corresponding to the value is output. The distance comparator 30 includes the distance detector 13
Is compared with the pattern stored in the distance parameter setting unit 29 to output a signal (amount of change) indicating the degree of distance variation. The microcomputer 31 outputs a setting signal such as an imaging condition (distance change amount reference value) for determining whether or not the signal output from the distance comparator 30 is a target object distance fluctuation.

Next, the determination section 32 ignores the output signal of the motion comparator 28 and determines whether or not the target object has actually moved based on the output signal of the distance comparator 30 and the output signal of the microcomputer 31. I do. That is, if the output signal of the distance comparator 30 exceeds a predetermined distance change amount reference value, it is determined that the subject has actually moved.

At this time, by changing the criterion of the distance variation in the image area being picked up, which is output from the microcomputer 31, the movement detection is performed with emphasis on the movement of the target object in the optical axis direction. It is possible to do.

Embodiment 5 Hereinafter, the operation of the motion identification unit 9 of the imaging device according to the fifth embodiment of the present invention will be described. In FIG. 7 illustrating the motion discriminating unit 9 according to the first embodiment, the distance parameter setting unit 29 stores a reference pattern for detecting a distance with respect to a change in the output signal of the distance detecting unit 13. This reference pattern is a specific gravity at the time of distance detection with respect to the image area being imaged,
For example, the distance in the optical axis direction of an object that is constantly imaged as a subject is stored as a reference pattern, and a control signal corresponding to the pattern is output. The distance comparator 30 compares the output signal of the distance detection unit 13 with the pattern stored in the distance parameter setting unit 29, and extracts only when the distance has changed from the distance value of the reference pattern. Output the signal shown. The microcomputer 31 outputs a setting signal (distance change amount reference value) such as an imaging condition for determining whether the signal output from the distance comparator 30 is a target object distance fluctuation.

Next, the judgment unit 32 ignores the output signal of the motion comparator 28 and, based on the output signal of the distance comparator 30 and the output signal of the microcomputer 31 (distance reference value), places a new object in the image area. Determines whether it has entered. That is, if the output signal of the distance comparator 30 exceeds the predetermined distance reference value, it is assumed that the subject originally in the image area is almost stationary or moves only slightly, and a new object is placed in the image area. Judge that it has entered.

As described above, only the case where a moving object enters the image area where the moving object has been set in advance and is picked up is extracted from the change in the distance variation in the image area being picked up. It is possible to focus on motion detection.

Embodiment 6 FIG. 12 is a block diagram showing an imaging apparatus according to Embodiment 6 of the present invention. The sixth embodiment is different from the first embodiment.
, A field detection range setting unit 43 for setting an image range to be processed by the motion detection unit 8 and a distance detection range setting unit 44 for setting an image range to be processed by the distance detection unit 13 are further added. Other configurations are the same as those of the first embodiment.
Is the same as In FIG. 12, a visual field detection range setting unit 4
3 designates the range of the visual field other than the distance direction of the image range being imaged, and the distance detection range setting unit 44 designates the range in the distance direction of the image range being imaged, and Disable image information. When the place where the image is taken is fixed, the area detected by the motion detection unit 8 and the distance detection unit 13 is limited, and malfunction due to an external factor such as a window or sky can be prevented. Environmental changes other than the target distance range, such as the vibration of a grove due to the wind, are ignored and are not detected as the target movement of the subject.

Seventh Embodiment FIG. 13 is a block diagram showing an imaging apparatus according to a seventh embodiment of the present invention. The seventh embodiment is different from the first embodiment.
, A field-of-view detection level setting unit 45 for setting an image level to be processed by the motion detection unit 8 and a distance detection level setting unit 46 for setting an image level to be processed by the distance detection unit 13 are further added. The configuration is the same as in the first embodiment. In FIG. 13, a visual field detection level setting unit 45 specifies a direction of motion or a level of motion magnitude other than the distance direction (direction perpendicular to the distance direction) of the image range being imaged, and a distance detection level setting unit 45. Reference numeral 46 designates a level such as the magnitude of the movement in the distance direction of the image range being captured, and limits the detection level of the movement of the target subject. When the place where the image is taken is fixed, the movement detected by the movement detecting unit 8 and the distance detecting unit 13 is limited,
Malfunction due to external factors such as windows and sky can be prevented. Small movements within a target distance range, such as vibrations of a grove caused by wind and flicker of a monitor in a room, are ignored, and are not detected as movements of a target subject.

Eighth Embodiment FIG. 14 is a block diagram showing an imaging apparatus according to an eighth embodiment of the present invention. The eighth embodiment is different from the first embodiment.
, A luminance signal detecting unit 47 for extracting a luminance signal from a video signal output from the signal processing unit 5 and an imaging condition detecting unit 48 for extracting an imaging condition from a luminance component of the video signal output from the luminance signal detecting unit 47 The motion identification unit 9 detects the motion of the subject from the output signal of the motion detection unit 8, the output signal of the distance detection unit 13, and the output signal of the imaging condition detection unit 48. Other configurations of the eighth embodiment are the same as those of the first embodiment.

FIG. 15 is a diagram showing the structure of the luminance signal detecting section 47. In this figure, 49 is a low-pass filter that removes a color signal component from the output signal of the signal processing unit 5, 50 is a high-luminance detection unit that detects the area of the high-luminance portion of the image signal output from the low-pass filter 49, Reference numeral 52 denotes a low-luminance detection unit that detects the area of a low-luminance portion of the image signal output from the low-pass filter 49. Reference numeral 48 denotes an imaging condition of a subject being imaged based on the outputs of the high-luminance detection unit 50 and the low-luminance detection unit 51. Is an imaging condition detection unit that detects the condition.

Next, the operation of the eighth embodiment will be described. In the signal output from the signal processing unit 5, a chrominance signal component is multiplexed in addition to the luminance signal component. As shown in FIG. 15, the low-pass filter 49 removes the modulated and multiplexed color signal components and extracts only the luminance signal components that are low-frequency components. With respect to the output signal of the low-pass filter 49, the high-luminance detection unit 50 and the low-luminance detection unit 51 detect a high-luminance component and a low-luminance component from the luminance signal from the low-pass filter 49, respectively. Is detected as a whole, whether the image is bright or dark, whether the image is captured at night or during the day. From these pieces of information, the illumination condition evaluation unit 48 determines the imaging environment of the subject in detail, and outputs an evaluation signal that matches the imaging conditions.

Next, the signal output from the imaging condition detecting section 48 is input to the determining section 32 (see FIG. 7) of the motion identifying section 9 shown in FIG. Therefore, for example, the imaging detection unit 4
8, when the imaging condition is determined to be very dark when the high-luminance component is small and the low-luminance component is almost the same, the accuracy is low in the motion detection based on the focus evaluation value and the color signal evaluation value. The distance detector 13 (see FIG. 7)
It works so that only detection from In particular, when an element having sensitivity outside the visible light region such as infrared light is used as the light emitting element for distance measurement, it is effective for motion detection in the dark. In this way, it is possible to detect the imaging conditions, select the detection that meets the conditions, and perform the motion detection with emphasis on the intended motion of the subject.

Embodiment 9 Hereinafter, a ninth embodiment of the present invention will be described with reference to FIGS. In FIG. 1 showing the imaging apparatus according to the first embodiment, an imaging lens 1 for forming an image on an imaging element 2, a light emitting element and a light receiving element 1
As shown in FIG. 16, the distance measuring lens 10 for one is shared by a lens 56. With this configuration, a light beam for distance measurement is radiated at the same focal length as the focal length of imaging, and it is possible to focus on motion detection of a target subject.

Tenth Embodiment FIG. 17 is a block diagram showing an imaging apparatus according to a tenth embodiment of the present invention. 17, reference numeral 52 denotes a trigger signal generator for outputting a signal for determining that the subject has moved based on the output signal of the motion discriminator 9, and 53, a video signal generator for generating a television signal from the output signal of the signal processor 5. ,
Reference numeral 54 denotes a trigger signal synthesizing unit that adds the output signal of the trigger signal generating unit 52 and the output signal of the video signal generating unit 53,
Reference numeral 5 denotes a video signal output terminal.

Next, the operation of the tenth embodiment will be described in detail with reference to FIG. When the motion identification unit 9 determines that the subject has moved, the trigger signal generation unit 52 outputs a determination signal to the outside under the control of the motion identification unit 9. The signal obtained by imaging the subject is converted into a television signal by the video signal generator 53. This signal
When recording with a VTR (video tape recorder) or the like, there are cases where recording is desired only when the subject changes. In this case, the trigger signal determined to have moved the subject is combined with the video signal by the trigger signal combining unit 54, and the recording side of the VTR or the like detects this trigger signal, thereby enabling recording in accordance with the movement of the subject. . In this case, information indicating whether the trigger signal is output in the distance direction, in the horizontal and vertical directions of the video, or in both directions may be output at the same time.

[0065]

As described above, according to the present invention, the frequency component of the luminance signal is extracted from the output signal of the image sensor for imaging the subject, the aperture control signal of the lens, and the signal processing circuit. From the change in the gain control signal, the focus evaluation value for the subject is accurately calculated, and
Since the distance to the subject can be detected and its change can be determined, by detecting only the movement of the intended subject, a signal for detecting the movement of the image can be obtained from the imaging device without installing an external image sensor. It has the effect of being able to output.

In addition, since infrared light is irradiated using an element sensitive to infrared light, a stable image can be obtained even when the environment in which the subject is imaged is extremely dark or the influence of visible light is extremely large. This has the effect that the movement of the target subject can be accurately detected.

Further, a color signal component is extracted from an output signal of the image pickup device, decomposed into R, G, and B color signal components after white balance adjustment, and a ratio of a color component to a subject is extracted. Since the color signal evaluation value for the subject can be accurately calculated from the change in the aperture control signal and the gain control signal of the signal processing circuit, the distance to the subject can be detected, and the change can be determined. By detecting only the movement of the image, there is an effect that a signal for detecting the movement of the video can be output from the imaging device without installing an external video sensor.

Further, by detecting the movement of the object in the optical axis direction using the distance measuring element, it is possible to detect the movement of the image in the optical axis direction within the target distance range, for example, the detection of an object moving away. This has the effect.

Also, when photographing indoors or the like,
Although a subject such as a wall is always at the same distance, the distance to a normal wall can be detected in advance using a distance measuring element, so the movement in the direction of the optical axis is detected. Has the effect of enabling high detection.

Further, a field-of-view detection range setting unit is provided for setting a range in which motion is detected based on a focus evaluation value extracted from a luminance signal of the image sensor and a color signal evaluation value extracted from a color signal. Since the distance detection range setting unit for setting the range of motion detection from the distance evaluation value obtained is provided, it is possible to set the area of the target subject in the area to be imaged, and to set the area other than the motion of the target subject. There is an effect that it is possible to prevent a malfunction in motion detection due to the influence of the background change.

Further, a field-of-view detection level setting unit for setting a detection sensitivity for detecting a motion based on a focus evaluation value extracted from a luminance signal of the image sensor and a color signal evaluation value extracted from a color signal is provided. Since the distance detection level setting unit for setting the level for detecting motion from the distance evaluation value extracted from the element is provided, there is an effect that the optimum detection sensitivity for the amount of motion of the subject in the area to be imaged can be set.

Further, by detecting the imaging conditions for imaging the subject and changing the specific gravity of the motion detection and the distance detection by the motion discriminating unit according to the imaging conditions, the optimum motion detection can be performed even in a completely dark or bright state. There is an effect that it becomes possible.

Further, by using the lens for imaging and the lens for distance measurement in common, the structure is simplified and the zoom function of the lens can be effectively used.

Further, since a trigger signal synthesizing section for multiplexing a motion identification signal, which has detected the motion of a subject, with a picked-up video signal and outputting the multiplexed signal is provided, the motion signal of the subject can be recorded only by outputting the video signal. This can be transmitted to devices and the like, and has the effect of eliminating the need for connection with other video sensors.

In addition to the motion identification signal that has detected the motion of the subject, information indicating whether the intended motion of the subject is in the distance direction, the horizontal and vertical directions of the video, or both is also included in the signal. The output trigger signal synthesizing unit is provided, so that it is possible to transmit the cause of the movement of the target subject to other recording devices or the like only by outputting the video signal. There is an effect that recording can be performed and extra wiring is not required.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of an imaging apparatus according to Embodiment 1 of the present invention.

FIG. 2 is a block diagram illustrating details of a focus signal detection unit in FIG. 1;

FIG. 3 is a block diagram illustrating details of a motion detection unit in FIG. 1;

FIG. 4 is a block diagram showing details of a light emitting element and a light receiving element in FIG. 1;

FIG. 5 is a block diagram illustrating details of a light receiving element unit in FIG. 1;

FIG. 6 is a block diagram illustrating details of a ranging signal processing unit in FIG. 1;

FIG. 7 is a block diagram illustrating details of a motion identification unit in FIG. 1;

FIG. 8 is a block diagram showing a configuration of an imaging device according to Embodiment 2 of the present invention.

FIG. 9 is a block diagram showing a configuration of an imaging device according to Embodiment 3 of the present invention.

FIG. 10 is a block diagram illustrating details of a color signal detection unit in FIG. 9;

FIG. 11 is a block diagram illustrating details of a motion detection unit in FIG. 9;

FIG. 12 is a block diagram showing a configuration of an imaging device according to Embodiment 6 of the present invention.

FIG. 13 is a block diagram showing a configuration of an imaging device according to Embodiment 7 of the present invention.

FIG. 14 is a block diagram showing a configuration of an imaging device according to Embodiment 8 of the present invention.

FIG. 15 is a block diagram illustrating details of a luminance signal detection unit in FIG. 14;

FIG. 16 is a block diagram showing a configuration of an imaging device according to Embodiment 9 of the present invention.

FIG. 17 is a block diagram showing a configuration of an imaging device according to Embodiment 10 of the present invention.

FIG. 18 is a block diagram illustrating a configuration of a conventional imaging device.

[Explanation of symbols]

1 imaging lens, 2 imaging element, 3 imaging element driving circuit, 4 light quantity control section, 5 signal processing section, 6 gain control section,
7 focus signal detector, 8 motion detector, 9 motion discriminator, 10, 10a, 10b distance measuring lens, 11
Light emitting and receiving element, 11a Light emitting element, 11b Light receiving element, 12 Distance measuring signal processing section, 13 Distance detecting section, 14
Low-pass filter, 15 horizontal aperture signal generator, 16 vertical aperture signal generator, 17 horizontal aperture signal controller, 18 vertical aperture signal controller, 1
9 Focus signal generator, 20 A / D converter, 21
Integrator, 22 hour counter, 23 focus evaluation value calculator, 24 memory circuit, 25 hour counter, 26
Distance change amount calculation unit, 27 Motion parameter setting unit, 28
Motion comparator, 29 distance parameter setting unit, 30 distance comparator, 31 microcomputer, 32 determination unit, 33 color signal detection unit, 34 color signal detection circuit, 35 color separation circuit, 36
White balance adjustment circuit, 37 color signal calculation unit, 3
8 ratio signal output unit, 39 A / D converter, 40 integration circuit, 41 time counting unit, 42 color signal evaluation value calculation unit, 4
3 field of view detection range setting unit, 44 distance detection range setting unit,
45 field-of-view detection level setting unit, 46 distance detection level setting unit, 47 luminance signal detection unit, 48 imaging condition detection unit,
49 low-pass filter, 50 high-intensity detector, 51
A low-brightness detector, 52 trigger signal generator, 53 video signal generator, 54 trigger signal synthesizer, 55 video output terminal, 56 infrared irradiation device, 57 infrared imaging device.

Claims (15)

[Claims] An imaging device including an imaging lens, a light receiving unit that converts an optical image formed by the imaging lens into an electric signal, an imaging device driving unit that drives the imaging device, and an output of the imaging device. A signal processing unit for converting a signal into a video signal; a gain control unit for attenuating or amplifying an output signal of the signal processing unit to an appropriate level; and a subject from the video signal adjusted to an appropriate signal level by the gain control unit. A focus signal detecting unit that detects a focus signal indicating a degree of focusing on the subject; a motion detecting unit that detects a change amount of the focus signal; a light emitting element and a light receiving element for distance measurement; A distance measuring lens for collecting light diffused and reflected by the object; a distance measuring signal processing unit for calculating a distance to the object from a signal obtained from the light receiving element; and a signal output from the motion detecting unit. The change amount of the focus signal is compared with a preset focus reference value.
A motion identification unit that compares a change amount of the distance signal output from the distance measurement signal processing unit with a previously set distance change amount reference value and determines a motion of a video from a result of the comparison. Imaging device. 2. An image pickup lens, an infrared image pickup device including a light receiving section that converts an optical image formed by the image pickup lens into an electric signal, an infrared light emitting device that emits infrared light, the infrared image pickup device and the infrared light An imaging device driving unit that drives the irradiation device; a signal processing unit that converts an output signal of the infrared imaging device into a video signal; and a gain control unit that attenuates or amplifies an output signal of the signal processing unit to an appropriate level. A focus signal detection unit that detects a focus signal indicating a degree of focusing on a subject from the video signal adjusted to an appropriate signal level by the gain control unit, and a motion detection unit that detects a change amount of the focus signal. A light-emitting element and a light-receiving element for distance measurement; a distance-measuring lens for diffusing light from the light-emitting element and condensing light reflected by a subject; With compares the ranging signal processing unit for calculating a distance to the subject, a focus reference value preset amount of change in the focus signals outputted by the motion detector from the items,
A motion identification unit that compares a change amount of the distance signal output from the distance measurement signal processing unit with a previously set distance change amount reference value and determines a motion of a video from a result of the comparison. Imaging device. 3. The image processing apparatus according to claim 2, wherein the change amount of the focus signal is larger than the focus reference value or the value of the distance signal is larger than the distance change amount reference value. The imaging apparatus according to claim 1, wherein it is determined that there is movement. 4. The motion discrimination unit, wherein a change amount of the focus signal is larger than the focus reference value, and
3. The imaging apparatus according to claim 1, wherein when the value of the distance signal is larger than the distance change amount reference value, it is determined that there is video motion. 5. An image pickup device comprising: an image pickup lens; a light receiving unit for converting an optical image formed by the image pickup lens into an electric signal; an image pickup device driving unit for driving the image pickup device; A signal processing unit that converts a signal into a video signal; a gain control unit that attenuates or amplifies an output signal of the signal processing unit to an appropriate level; and a video signal adjusted to an appropriate signal level by the gain control unit. A color signal detector for detecting a component; a light emitting element and a light receiving element for distance measurement; a distance measuring lens for diffusing light of the light emitting element and condensing light reflected by a subject; A distance measuring signal processing unit for calculating the distance to the object from the detected signal, comparing the amount of change in the detected color signal with a previously set color reference value, and the amount of change in the distance signal output from the distance measuring signal processing unit. Before An imaging apparatus comprising: a motion identification unit that compares the distance change amount reference value set in advance with the reference value and determines the motion of the image based on the comparison result. 6. The motion discriminating unit, when the change amount of the color signal is larger than the color reference value, or when the value of the distance signal is larger than the distance change amount reference value, The imaging device according to claim 5, wherein it is determined that there is movement. 7. The method according to claim 1, wherein the motion discriminating unit is configured to, when the change amount of the color signal is larger than the color reference value and the value of the distance signal is larger than the distance change amount reference value, The imaging apparatus according to claim 5, wherein it is determined that there is an image. 8. An image pickup device, comprising: an image pickup lens; a light receiving unit for converting an optical image formed by the image pickup lens into an electric signal; an image pickup device driving unit for driving the image pickup device; A signal processing unit that converts a signal into a video signal; a gain control unit that attenuates or amplifies an output signal of the signal processing unit to an appropriate level; a light emitting element and a light receiving element for distance measurement; A distance measuring lens that collects light that is diffused and reflected by the object; a distance measuring signal processing unit that calculates a distance to the object from a signal obtained from the light receiving element; and a distance that is output from the distance measuring signal processing unit. Comparing the change amount of the signal with a preset distance change amount reference value, and determining that there is movement in the optical axis direction of the image if the change amount of the distance signal is larger than the distance change amount reference value. An identification unit and An imaging device, comprising: 9. An image pickup device comprising: an image pickup lens; a light receiving unit for converting an optical image formed by the image pickup lens into an electric signal; an image pickup device driving unit for driving the image pickup device; A signal processing unit that converts a signal into a video signal; a gain control unit that attenuates or amplifies an output signal of the signal processing unit to an appropriate level; a light emitting element and a light receiving element for distance measurement; A distance measuring lens that collects light that is diffused and reflected by the object; a distance measuring signal processing unit that calculates a distance to the object from a signal obtained from the light receiving element; and a distance that is output from the distance measuring signal processing unit. Comparing the signal value with a previously set distance reference value, and when the distance signal is larger than the distance reference value, a motion identification unit that determines that there is a motion of the image in a direction orthogonal to the optical axis direction. Specially to prepare An image pickup device. 10. A field-of-view detection range setting unit capable of changing a detection range of a motion detection unit with respect to a field of view in advance from an image captured by an image sensor, and setting a distance range of a motion detection operation of an object in advance. Further comprising: a distance detection range setting unit capable of: wherein the motion detection unit generates an output signal only from a predetermined range set by the visual field detection range setting unit and the distance detection range setting unit, The imaging device according to claim 1, wherein the identification unit determines whether or not the video of the target subject moves within the predetermined range from the signal. 11. A motion parameter setting unit and a distance parameter setting unit capable of changing a reference value for judging the presence or absence of motion of a target subject by the motion identification unit. 11. The imaging device according to any one of claims 10 to 10. 12. The light-emitting element and the light-receiving element for distance measurement are respectively constituted by an infrared light-emitting element and an infrared light-receiving element, and the motion discriminating unit illuminates an object to be imaged based on a control amount of the gain control unit. Detecting an imaging environment such as a condition, comparing a luminance signal with a luminance reference value set in advance in a level setting unit, and when the luminance signal is lower than the luminance reference value, only an output signal from the distance detection unit. The imaging device according to claim 1, wherein it is determined whether or not there is motion of the video. 13. An imaging lens for imaging a video signal is used in place of the distance measurement lens for diffusing light from a light emitting element for a distance measurement and a light emitting element for a light receiving element and condensing light reflected by a subject. The imaging device according to claim 1, wherein: 14. The trigger according to claim 1, further comprising: a motion discrimination unit that outputs a trigger signal that is a determination signal as to whether or not the target subject has moved, and a trigger signal combination unit that combines a video signal and the trigger signal. 14. The imaging apparatus according to claim 1, wherein the signal combining unit outputs a trigger signal superimposed on the video signal. 15. The trigger signal synthesizing section outputs a trigger signal superimposed on a video signal and outputs the video signal.
15. The imaging apparatus according to claim 14, wherein information indicating whether the direction is the vertical direction or both directions is simultaneously output.