JP2000101960A - Automatic still image capture device and method for automatically capturing still images - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic still image capture device which automatically performs appropriate discrimination of still image/animation and an automatically fetching method for a still image. SOLUTION: A one-frame delaying part delays a prescribed digital video signal by one frame and operates it, and a pixel data operating part 10 operates and outputs the absolute value of the difference between pixel data existing at the same positions of respective images about the prescribed digital video signal 1 and the video signal delayed by one frame portion. The outputted value is compared with a predefined set value A, and a pixel data operation value comparing part 11 outputs a compared signal. A nonstatic pixel counter 13 outputs integrated value obtained by integrating the outputted signal in every frame, and a still image storing part 6 selectively stores a digital video signal of one frame based on the integrated value. In this configuration, a mass storage device that captures whole including animation becomes unnecessary, and the configuration of a storage device whose extent is relatively small but is large enough to capture a still image becomes possible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to an automatic still image capturing apparatus having a still image storing function and an automatic still image capturing method.

[0002]

2. Description of the Related Art Conventionally, an automatic still image capturing apparatus and an automatic still image capturing method generally include a still image storing function for automatically capturing still image data for storage in a storage device. For example, when there is no signal for identifying a still image in a still image transmitted through a video signal line for handling a moving image, all of the transmitted video signals are used as a moving image as a moving image recording apparatus. Or the receiver himself identifies the portion of the still image and manually imports it into the still image recording device.

[0003]

However, in the case of the above-mentioned conventional example, the information to be taken is extremely redundant and a large amount of waste occurs on the recording medium. In the latter case, the receiver is receiving a signal to manually capture the still image to the recording device,
The problem is that you will be tied up and will spend a lot of time, effort and labor.

On the other hand, in order to automatically determine a still image, a change in pixel data is recognized as a still image including noise and a moving image, or partial animation such as a blinking icon. It is necessary to appropriately determine the determination range such as whether or not to perform the determination.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an automatic still image capturing apparatus and an automatic still image capturing method for automatically determining a proper still image / moving image.

[0006]

According to an aspect of the present invention, there is provided a one-frame delay unit for delaying a predetermined digital video signal by one frame and outputting the delayed digital video signal.
Pixel data calculation for calculating and outputting an absolute value of a difference between pixel data at the same position on the screen between a predetermined digital video signal and a digital video signal output by delaying one frame by a one-frame delay unit Part (10),
A pixel counter (13, 23) that compares an output value from the pixel data calculation unit (10) with a predetermined set value A and integrates the compared signal, and a count value of the pixel counter and a predetermined value. A comparison unit (14, 24) for comparing the set value B with one another to determine whether the digital video signal is still or not during one frame, and a still state of an image during one frame is continuous based on the output of the comparison unit; A stationary state determining unit that integrates the stationary state time and determines whether the stationary state or the non-static state based on the integrated value (16, 17, 18, 19)
A still image storage unit for selectively storing the one-frame digital video signal based on the determination by the still state determination unit.
And the following.

According to a second aspect of the present invention, in the first aspect of the present invention, the automatic still image capturing apparatus includes a frame memory (5) for storing a predetermined digital video signal output with a delay of one frame. , Is further provided.

[0008] The invention described in claim 3 is claim 1 or 2.
In the invention described in (1), the automatic still image capturing apparatus further includes an A / D converter (3) that receives a predetermined analog video signal and outputs a predetermined digital video signal.

The invention according to claim 4 is the invention according to claim 2 or 3.
In the invention described in the above, the still state determination unit that determines whether the image is in the still state or the non-still state is a time period when it is determined that the image of one frame is in the still state based on the output value of the pixel counter (13, 23). And the video is determined to be a still image when the output value of the one-frame image still state time counter (17) for accumulating the sum is equal to a predetermined set value C. And outputs a read signal to the frame memory (5).
And an inter-frame image still state continuous time comparison unit (18).

According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the automatic still image capturing apparatus comprises:
A pixel data operation value comparison unit (11) that compares an output value from the pixel data operation unit (10) with a predetermined set value A and outputs the compared signal; .

According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the pixel data operation value comparing section (11) is configured to determine whether the output value of the pixel data operation section (10) and the set value A are static. A pixel or a non-still pixel is determined, and a signal for incrementing a counter value of a pixel counter by 1 is output.

According to a seventh aspect of the present invention, in accordance with the second aspect of the present invention, the stationary state determination section (16,
17, 18 and 19) are connected to the output from the comparing section (14 and 24), and when the output signal is not input in a certain frame, the image is in a still state between that frame and the immediately preceding frame. And a comparison unit (14, 2) that outputs a signal for resetting the counter value to “0” and outputs a signal to reset the counter value to “0”.
4) and is connected to the inter-frame image still state continuous detection section (16), outputs a counter value obtained by integrating output signals from the comparison sections (14, 24) for each frame, and outputs Interim image still state continuous detection unit (1
The counter value is reset to "0" by the output signal from 6), and the one-frame image still state time counter (17) counts the time of the one-frame image still state (17).
When the output of the one-frame image still state time counter (17) is connected to the predetermined set value C and the output value of the one-frame image still state time counter (17) becomes equal to the set value C, A one-frame image still state continuous time comparison unit (18) that determines that the video is a still image and outputs a read signal to the frame memory (5)
And characterized in that:

According to an eighth aspect of the present invention, in the invention according to any one of the first to seventh aspects, the automatic still image capturing apparatus comprises:
A noise level detection unit (20) for detecting a noise component included in a predetermined digital video signal, quantifying the magnitude of the noise component and outputting the numerical value, and an output of a set value A and a noise level detection unit (20) And an adder (21) for adding the output values and outputting the result to the pixel data operation value comparator (11).

According to a ninth aspect of the present invention, there is provided a one-frame delay step of delaying a predetermined digital video signal by one frame and outputting the delayed digital video signal, and delaying and outputting the predetermined digital video signal and the one-frame delay unit by one frame. A pixel data calculating step of calculating and outputting an absolute value of a difference between pixel data at the same position on the screen between the obtained digital video signals, and an output value from the pixel data calculating step and a predetermined set value A. And a pixel count step of integrating the compared signals, and comparing the count value of the pixel count step with a predetermined set value B to determine whether the digital video signal is stationary or non-stationary during one frame. And a stationary state time in which the still state of the image for one frame is continuous based on the output of the comparing step. A stationary state determination step of determining whether the stationary state, and having a static image storage step of selectively storing the digital video signal of one frame based on the determination of the stationary state determination process.

According to a tenth aspect of the present invention, in the ninth aspect of the present invention, the automatic still image capturing method includes a frame memory storing step of storing a predetermined digital video signal output with a delay of one frame. It is further characterized by having.

According to an eleventh aspect of the present invention, in the ninth or tenth aspect of the present invention, the automatic still image capturing method comprises an A / D conversion step of receiving a predetermined analog video signal and outputting a predetermined digital video signal. Is further provided.

According to a twelfth aspect of the present invention, in the tenth or eleventh aspect of the present invention, the stationary state determining step of determining whether the image is in a stationary state or a non-stationary state includes an image for one frame based on an output value of the pixel counting step. When the output value of the one-frame image still-state time counting step for integrating the time when it is determined that the image is in the stationary state and the output value of the one-frame image still-state time counting step become equal to a predetermined set value C, A one-frame image still state continuous time comparing step of determining that the video is a still image and outputting a read signal to the frame memory storing step.

The invention according to claim 13 is the invention according to claims 9 to 1
In the invention according to any one of the first to third aspects, the automatic still image capturing method may include a step of comparing an output value from the pixel data calculation step with a predetermined set value A and outputting a compared signal. The method further comprises a step.

According to a fourteenth aspect of the present invention, in the invention according to the thirteenth aspect, the pixel data operation value comparison step includes the step of comparing the output value of the pixel data operation step with the set value A with a still pixel or a non-still pixel. It is characterized by outputting a signal for determining and incrementing the counter value in the pixel counting step by one.

According to a fifteenth aspect of the present invention, in the invention according to any one of the tenth to fourteenth aspects, the stationary state determining step is connected to an output from the comparing step, and the output signal is not input in a certain frame. In this case, it is determined that the image still state has been interrupted between the frame and the immediately preceding frame, and a signal for resetting the count value to “0” is output. And a count value obtained by integrating the output signal from the comparison step is output for each frame, and an output signal from the one-frame image still state continuous detection step Resets the count value to “0” and counts the time of the still state of the image for one frame. Is connected to a predetermined set value C and the output of the 1-frame between images quiescent time count step,
When the output value of the one-frame image still state time counting step becomes equal to the set value C, the image is determined to be a still image, and the one-frame image for outputting a read signal to the frame memory storage step. And a stationary state continuous time comparison step.

The invention according to claim 16 is the invention according to claims 9 to 1
5. The method according to claim 5, wherein the automatic still image capturing method includes a noise level detecting step of detecting a noise component included in the predetermined digital video signal, digitizing the magnitude of the noise component, and outputting the numerical value. , A set value A and an output of the noise level detecting step, and an adding step of adding these output values and outputting the result to the pixel data operation value comparing step.

[0022]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of an automatic still picture taking apparatus and a still picture taking method according to the present invention. FIGS. 1 to 3 show an embodiment of an automatic still image capturing apparatus and automatic still image capturing method according to the present invention.

(First Embodiment) FIG. 1 shows a first embodiment of the present invention.
1 is a block diagram illustrating a configuration of an automatic still image capturing device according to an embodiment. Referring to FIG. 1, the main part of the configuration of the automatic still image capturing apparatus 1 according to the embodiment of the present invention is divided into two parts, a video signal transmission system and a still image determination system that controls the video signal transmission system. The video signal transmission system includes an A / D converter 3, a one-frame delay unit 4, a frame memory 5, and a still image storage unit 6.
It is composed of The still image determination system includes a pixel data calculation unit 10, a pixel data calculation value comparison unit 11, a set value A storage unit 12, a non-still pixel counter 13, a non-still pixel count comparison unit 14 for one frame, , Set value B storage unit 15
A one-frame image still state continuous detection unit 16, a one-frame image still state time counter 17, a one-frame image still state continuous time comparison unit 18, and a set value C storage unit 19.

In the video signal transmission system configured as described above, the A / D converter 3 converts an analog video signal input from the video signal output circuit 2 into a digital signal and outputs the digital signal. The one-frame delay unit 4 is connected to the output of the A / D converter 3 and delays the input digital video signal by one frame and outputs it. The frame memory 5 has 1
It is connected to the output of the frame delay unit 4 and outputs a digital video signal of one frame to the still image storage unit 6 based on a read signal from the one-frame image still state continuous time comparison unit 18.

In the other still image discriminating system, the pixel data calculation unit 10 is connected to the output of the A / D converter 3 and the output of the one-frame delay unit 4, and for the digital video signal input from each, The absolute value of the difference between the pixel data at the same position on those screens is sequentially output. The pixel data operation value comparison unit 11 is connected to the output of the pixel data operation unit 10 and the output of the set value A storage unit 12, and when the output value of the pixel data operation unit 10 is equal to or more than the set value A, the pixel is turned off. It determines that the pixel is a still pixel and outputs a signal for incrementing the counter value of the non-still pixel counter 13 by one.

The non-stationary pixel counter 13 is connected to the output of the pixel data operation value comparison unit 11 and outputs a counter value obtained by integrating the output signals for each frame, and simultaneously resets the counter value to "0". The one-frame non-still pixel count comparing unit 14 is connected to the output of the non-still pixel counter 13 and the output of the set value B storage unit 15, and when the output value of the non-still pixel counter 13 is less than the set value B, It determines that the image is in the still state for one frame, and outputs a signal for incrementing the counter value of the one-frame image still state time counter 17 by one.

The inter-frame image still state continuous detecting section 16
Is connected to the output of the inter-frame non-still pixel count comparison unit 14, and if the output signal is not input in a certain frame, it is determined that the image still state has been interrupted between that frame and the immediately preceding frame Then, a signal for resetting the counter value of the inter-frame image still state time counter 17 to “0” is output. The one-frame image still state time counter 17 includes a one-frame non-still pixel number comparison unit 1
4 and outputs a counter value obtained by integrating the output signals for each frame, and resets the counter value to “0” by an output signal from the one-frame image still state continuous detection unit 16.

The one-frame image still state continuous time comparison unit 18 is connected to the output of the one-frame image still state time counter 17 and the output of the set value C storage unit 19 and is connected to the one-frame image still state time counter 17. Is equal to the set value C, the video is determined to be a still image, and a read signal is output to the frame memory 5.

(Explanation of Operation) The operation of the automatic still image capturing apparatus according to the first embodiment of the present invention shown in FIG. 1 will be described. The analog video signal from the video signal output circuit 2 is input to the A / D converter 3, and the output digital signal is input to the frame memory 5 via the one-frame delay unit 4. On the other hand, pixel data included in the output signal of the A / D converter 3 and the output signal of the one-frame delay unit 4 are input to the pixel data calculation unit 10, respectively. Since these two types of data are temporally shifted by one frame by the one-frame delay unit 4, the pixel data calculation unit 1
To 0, the pixel data at the same position on the frame is continuously input at the same time.

Here, the absolute value of the difference between these two data is calculated and output each time pixel data is input. The calculated value is compared with the set value A stored in the set value A storage unit 12 by the pixel data calculated value comparison unit 11. Each time the result of this comparison is greater than or equal to A, it is assumed that the data of the pixel that is the source of the computed value has changed during this one frame under the influence of the moving image, and is determined as a non-still pixel. A signal for incrementing the counter value of the still pixel counter 13 by 1 is output from the pixel data operation value comparison unit 11. The number of non-still pixels is obtained by counting this output by the non-still pixel counter 13. The counter value is output to the non-still pixel count comparing unit 14 for one frame, and at the same time, the counter value of the non-still pixel counter 13 is reset to "0" for each frame.

The counter value of the non-still pixel counter 13 is
For each frame, a non-still pixel count comparing unit 14 for one frame
The set value B stored in the set value B storage unit 15
Is compared to When the result of this comparison is less than B, it is determined that the entire screen is in an image stationary state during this one frame. Further, a signal for incrementing the counter value of the one-frame image still state time counter 17 by one is output from the one-frame non-still pixel count comparing unit 14. This output is checked for the presence or absence of the signal every frame by the inter-frame still image state detection unit 16. If there is no signal, it is determined that the image still state has been interrupted between that frame and the immediately preceding frame, and the one-frame image still state continuous detection unit 16 outputs a reset signal.

A non-still pixel count comparing section 1 for one frame
The output signal of No. 4 is counted by the one-frame image still state time counter 17, and the counter value is output to the one-frame image still state continuous time comparison unit 18 every one frame. The counter value of the one-frame image still state time counter 17 represents the time during which the image still state is continuous by the number of frames. When the reset signal of the one-frame image still state continuous detection unit 16 is input, the counter value becomes one. The counter value of the inter-frame image still state time counter 17 is reset to “0”.

The counter value input to the one-frame image still state continuous time comparison unit 18 is compared with the set value C stored in the set value C storage unit 19. In this comparison, only when the value becomes equal to the set value C, it is determined that the continuous time of the image still state is sufficient to regard the video as a still image. A readout signal is output from the state continuous time comparison unit 18. In response to the read signal, the digital video signal of one frame is stored in the still image storage unit 6 from the frame memory 5.
Is output to the still image storage unit 6 as a still image.

How the operation is changed by changing each set value will be described in detail below.

The set value A is set in order to eliminate the influence of noise from the operation value output from the pixel data operation unit 10 and to make it more reliable to determine whether a pixel is stationary or non-stationary. Changes in pixel data between one frame include not only the effects of moving images, such as movement and color and brightness of the object displayed on the screen, but also noise mixed in the transmission system before the A / D converter 3. The impact of the is also relevant.

However, in the case of noise at a level that can withstand normal viewing, the amount of change in pixel data between one frame, that is, the calculated value, is generally smaller than that in the case of a moving image.
Therefore, a calculation value due to noise and a calculation value due to a moving image are checked in the output of the pixel data calculation unit 10, and the set value A is selected and set between them. With this proper selection setting, if there is only noise, the calculated value is less than A, and it is determined that the pixel is a still pixel. When a moving image is also included, the calculated value is equal to or larger than A and is determined to be a non-still pixel.

The set value B is calculated by the pixel data operation value comparison unit 11
, The non-still pixel counter 1
With respect to those counted in 3, the influence of local pulse noise is eliminated, and the determination of the presence or absence of the image stationary state during one frame is made more reliable. In addition, one intentionally includes a partial animation display such as a blinking icon.
This is set to determine the inter-frame image still state.

The pulse noise and the blinking icon are as follows.
The pixel data operation value comparison unit 11 may cause a change in pixel data enough to be determined as a moving image. However, the number of affected pixels is generally smaller than that of moving images. Therefore, in the output of the non-stationary pixel counter 13, the counter value by the pulse noise or the blinking icon and the counter value by the moving image are examined, and the set value B is determined between them. Set value B properly
By selecting and setting, in the case of only pulse noise or blinking icons, the calculated value is less than B, and it is determined that the entire screen is in an image stationary state during this one frame. In the case of a moving image, the calculated value is B or more, and it is determined that the image is not in a still state.

The set value C indicates how long the inter-frame image still state continuous time extracted by the inter-frame image still state continuous detection unit 16 and the inter-frame image still state time counter 17 lasts. When
This is set to adjust whether the video is considered to be a still image. By checking the time of each still image included in the video data from which a still image is to be captured and setting the set value C in advance, it is possible to capture the still image more reliably.

(Modification Example of First Embodiment) FIG. 2 is a block diagram showing a modification example in which the internal configuration of the automatic still image capturing apparatus according to the first embodiment of the present invention is partially changed. In this variation, the same effects as those of the above embodiment can be obtained even if the configuration and operation of each unit are changed as follows.

Referring to FIG. 2, the pixel data operation value comparison unit 11 is connected to the output of the pixel data operation unit 10 and the output of the set value A storage unit 12, and the output value of the pixel data operation unit 10 is set to the set value A If the value is smaller than the threshold value, the pixel is determined as a still pixel, and a signal for incrementing the counter value of the still pixel counter 23 by 1 is output. The still pixel counter 23 is connected to the output of the pixel data operation value comparison unit 11, outputs a counter value obtained by integrating the output signals for each frame, and simultaneously resets the counter value to “0”. The one-frame still pixel count comparing unit 24 is connected to the output of the still pixel counter 23 and the output of the set value B storage unit 15, and when the output value of the still pixel counter 23 is equal to or more than the set value B, 1
It is determined that the image is in a still state between frames, and the counter value of the one-frame image still state time counter 17 is set to 1
Outputs the signal to increment.

According to the first embodiment of the present invention or a variation of the first embodiment, only a still image is fetched after determining a still image from moving image / still image mixed data. This eliminates the need for a large-capacity recording device that captures whole moving images and moving images, and requires a recording device with a relatively small capacity that can capture still images.

Further, since the still image is automatically taken in, there is no need for the receiver himself to identify the still image from the moving image and manually take in the still image. No external identification signal is required for this capture. For this reason, it is possible to determine and capture a still image from a general video signal such as a video received by a television or a video of a video device. Furthermore, since software can be applied to the configuration, the degree of freedom in design when the apparatus is mounted on a device that handles digital information such as a personal computer is increased.

It is possible to adjust a determination range such as where to set a boundary between a moving image and noise, or whether to recognize a still image including a partial animation such as a blinking icon. For this reason, it is possible to improve the accuracy of still image determination and to select a determination level according to the situation.

(Second Embodiment) Next, an automatic still image capturing apparatus according to a second embodiment of the present invention will be described in detail with reference to the drawings. FIG. 3 is a block diagram showing a second embodiment of the present invention. Compared to FIG. 1, a noise level detection unit 20 and an addition unit 21 are newly provided and configured.

The configuration of the automatic still image capturing apparatus according to the second embodiment of the present invention will be described. The noise level detecting section 20 is connected to the output of the A / D converter 3 and includes the noise included in the digital video signal. The components are detected, and the magnitudes are digitized and output. The addition unit 21 is connected to the output of the set value A storage unit 12 and the output of the noise level detection unit 20, adds these output values, and outputs the result to the pixel data operation value comparison unit 11.

The operation according to the second embodiment of the present invention will be described. The set value A of the set value A storage unit 12 is a value which is a boundary for discrimination and a noise level detected by the noise level detection unit 20. , Ie, the value of the clearance. Therefore, in the pixel data operation value comparison unit 11, the input value from the addition unit 21 which is a reference for comparison with the operation value of the pixel data operation unit 10 is obtained by adding the constant value A to the noise level. Increase or decrease according to. The smaller the value, the smaller the change in pixel data is determined to be non-stationary.
The still pixel determination is performed with higher accuracy for an image with less noise and with a certain degree of accuracy for an image with much noise.

The noise component detected by the noise detector 20 includes a peak value, a quasi-peak value, an effective value, an average value, and the like. Further, as an example of a method of detecting a noise component, there is a method of measuring the magnitude of the noise component where there is no video signal such as a synchronization signal.

Therefore, according to the second embodiment of the present invention, since the set value serving as the reference for determination can be automatically changed with respect to noise, a new effect of no adjustment to the set value A in FIG. Having.

The above embodiment is an example of a preferred embodiment of the present invention. However, it is not limited to this.
Various modifications can be made without departing from the spirit of the present invention.

[0051]

As is apparent from the above description, according to the automatic still image capturing apparatus and still image automatic capturing method of the present invention, a predetermined digital video signal is output after being delayed by one frame, and Then, the absolute value of the difference between the pixel data at the same position on the screen for the digital video signal and the digital video signal delayed by one frame is calculated. The calculated value is compared with a predetermined set value A, and an integrated value obtained by integrating the output signals is output for each frame.
The digital video signal of the frame is selectively stored.

Accordingly, a large-capacity recording device for capturing the whole image including a moving image is not required, and a relatively small-capacity recording device capable of capturing a still image can be configured.
In addition, since a still image can be automatically captured, a manual capturing operation is not required, and an external identification signal for capturing is unnecessary. Therefore, a still image can be captured from a general video signal such as a video received by a television or a video of a video device.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of an automatic still image capturing apparatus and still image automatic capturing method according to the present invention.

FIG. 2 is a block diagram showing a modified example of the first embodiment of the present invention.

FIG. 3 is a block diagram showing a second embodiment of the automatic still image capturing device and the automatic still image capturing method according to the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 automatic still image capture device 2 video signal output circuit 3 A / D converter 4 1 frame delay unit 5 frame memory 6 still image storage unit 10 pixel data operation unit 11 pixel data operation value comparison unit 12 setting value A storage unit 13 non Still pixel counter 14 One-frame non-still pixel count comparison unit 15 Set value B storage unit 16 One-frame image still state continuous detection unit 17 One-frame image still state time counter 18 One-frame image still state continuous time comparison unit 19 Set value C storage unit 20 Noise level detection unit 21 Addition unit 23 Still pixel counter 24 Still pixel count comparison unit for one frame

Claims (16)

[Claims] 1. A one-frame delay unit for delaying a predetermined digital video signal by one frame and outputting the digital video signal, and a digital video signal output by delaying one frame by the predetermined digital video signal and the one-frame delay unit A pixel data calculation unit that calculates and outputs an absolute value of a difference between pixel data at the same position on the screen with respect to the pixel data, and compares an output value from the pixel data calculation unit with a predetermined set value A; A pixel counter for integrating the compared signals; a count value of the pixel counter and a predetermined set value B
And a comparison unit that determines whether the digital video signal is stationary or non-stationary during one frame. Based on the output of the comparison unit, accumulates the stationary state time during which the stationary state of the image between one frame continues, A still-state determining unit that determines whether the image is in a stationary state or a non-static state based on the integrated value; and a still-image storing unit that selectively stores the digital video signal of one frame based on the determination of the stationary state determining unit. And a still image automatic capture device. 2. The still picture automatic capturing apparatus according to claim 1, wherein said still picture automatic capture device further comprises a frame memory for storing a predetermined digital video signal output after being delayed by one frame. Automatic capture device. 3. The automatic still image capturing apparatus according to claim 1, further comprising: an A / D converter to which a predetermined analog video signal is input and outputs the predetermined digital video signal. The still image automatic capture device according to the above. 4. A still-state determining unit for determining whether the image is in a still state or a non-static state, based on an output value of the pixel counter, accumulates a time when the image of one frame is determined to be in a stationary state. A one-frame image still state time counter; and when the output value of the one-frame image still state time counter becomes equal to a predetermined set value C, the video is determined to be a still image, and the frame memory is determined. The still image automatic capturing apparatus according to claim 2, further comprising: a one-frame image still state continuous time comparing unit that outputs a read signal to the apparatus. 5. The automatic still image capturing apparatus according to claim 1, further comprising: a pixel data calculation value comparison unit that compares an output value from the pixel data calculation unit with a predetermined set value A and outputs the compared signal. 5. The method according to claim 1, further comprising:
The still image automatic capture device according to any one of the above. 6. The pixel data calculation value comparison unit determines a still pixel or a non-still pixel in a comparison between the output value of the pixel data calculation unit and the set value A, and sets the counter value of the pixel counter to 1 The still image automatic capture device according to claim 5, wherein a signal for incrementing is output. 7. The still state determination unit is connected to an output from the comparison unit, and when an output signal is not input in a certain frame, an image still state is determined between the frame and the immediately preceding frame. Is connected to the inter-frame still image state continuous detection unit that outputs a signal for resetting the counter value to “0” when it is determined that the image has been interrupted, and the output from the comparison unit and the inter-frame image still state continuous detection unit The counter value obtained by integrating the output signal from the comparison unit is output for each frame, and the counter value is reset to “0” by the output signal from the inter-frame image still state continuous detection unit. A one-frame image still state time counter that counts the time of the still state of the image between, and an output of the one-frame image still state time counter and a predetermined value. When the output value of the one-frame image still state time counter is equal to the set value C, the video is determined to be a still image, and a read signal is sent to the frame memory. 7. The automatic still image capturing apparatus according to claim 2, further comprising: an inter-frame image still state continuous time comparing section for outputting. 8. The automatic still image capturing apparatus detects a noise component included in the predetermined digital video signal, and converts a value of the noise component into a numerical value and outputs the result. 8. The image processing apparatus according to claim 1, further comprising an adder connected to the output of the value A and the noise level detector, for adding these output values and outputting the result to a pixel data operation value comparator. The still image automatic capture device according to any one of the above. 9. A one-frame delay step of delaying a predetermined digital video signal by one frame and outputting the digital video signal, and a digital video signal output by delaying the predetermined digital video signal and one frame by the one-frame delay unit A pixel data calculation step of calculating and outputting the absolute value of the difference between the pixel data at the same position on the screen with respect to the pixel data; and comparing the output value from the pixel data calculation step with a predetermined set value A; A pixel counting step of integrating the compared signals; and a comparing step of comparing the count value of the pixel counting step with a predetermined set value B to determine whether the digital video signal is stationary or non-stationary during one frame. Based on the output of the comparing step, the stationary state time in which the stationary state of the image for one frame is continuous is integrated, and the stationary state or the non-static state is calculated based on the integrated value. A still-state determination step of determining whether the still image is recorded, and a still-image storing step of selectively storing the one-frame digital video signal based on the determination of the still-state determination step. . 10. The automatic still image capturing method according to claim 9, further comprising a frame memory storing step of storing the predetermined digital video signal output after being delayed by one frame. Automatic still image capture method. 11. The automatic still image capturing method according to claim 9, further comprising an A / D conversion step of receiving a predetermined analog video signal and outputting the predetermined digital video signal. 2. The still image automatic capturing method according to 1. 12. The stationary state determining step of determining whether the image is in the stationary state or the non-static state is based on an output value of the pixel counting step, and accumulates a time when it is determined that the image for one frame is in the stationary state. When the output value of the one-frame image still state time counting step and the output value of the one-frame image still state time counting step become equal to a predetermined set value C, it is determined that the video is a still image, 12. The still image according to claim 10, further comprising: a one-frame image still state continuous time comparing step of outputting a read signal to the frame memory storing step. Automatic capture method. 13. The automatic still image capturing method according to claim 1, wherein the output value from the pixel data calculation step is set to a predetermined set value A
10. A pixel data operation value comparison step of comparing the pixel data and outputting the compared signal.
13. The automatic still image capturing method according to any one of items 1 to 12. 14. The pixel data calculation value comparing step includes determining a still pixel or a non-still pixel in comparing the output value of the pixel data calculation step with the set value A, and determining a counter value of the pixel counting step. 14. The still image automatic capturing method according to claim 13, wherein a signal for incrementing by one is output. 15. The stationary state determining step is connected to an output from the comparing step, and when the output signal is not input in a certain frame, the image stationary state is determined between the frame and the immediately preceding frame. Is connected to an inter-frame still image continuous state detecting step of outputting a signal for resetting the count value to “0” upon judging that the image has been interrupted, and an output from the comparing step and the inter-image still image continuous state detecting step. The count value obtained by integrating the output signals from the comparison step is output for each frame, and the count value is reset to “0” by the output signal from the one-frame image still state continuous detection step.
A one-frame image still-state time counting step for counting a still-state time of an image between frames; and an output of the one-frame image still-state time counting step and a predetermined set value C, wherein the one-frame When the output value of the inter-image still state time counting step becomes equal to the set value C, the video is determined to be a still image, and a read signal is output to the frame memory storage step. 15. A state continuous time comparing step.
7. The automatic still image capturing method according to any one of the above. 16. The automatic still image capturing method includes detecting a noise component included in the predetermined digital video signal,
A noise level detecting step of converting the magnitude of the noise component into a numerical value and outputting the result; a setting value A and an output of the noise level detecting step; The still image automatic capturing method according to any one of claims 9 to 15, further comprising an adding step of outputting the still image to a still image.