JP3667065B2 - Imaging recording apparatus and control method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an imaging recording apparatus and a control method thereof, and more particularly to an imaging apparatus that performs recording and reproduction processing of an imaging signal imaged using an imaging element.
[0002]
[Prior art]
2. Description of the Related Art In recent years, with the advancement of digital signal processing technology, many imaging recording apparatuses have been proposed that process an imaging signal digitally and record it as a digital video signal on a tape or disk device.
[0003]
In these, the output signal of an image sensor such as a CCD is converted from analog to digital by an AD converter, this is signal processed by a digital signal processing circuit to obtain a digital video signal, and this is converted to recording data by a digital recording processing circuit. And recorded on a tape or disk device. In the case of having a playback unit, a digital video signal is formed from the output of the tape or disk device by a digital playback processing circuit and output to the external device as a playback digital video signal.
[0004]
[Problems to be solved by the invention]
A digital video signal which is a reproduction output signal is connected to various external devices. For example, after D / A conversion, it is connected to a normal TV monitor, connected to another VTR, a still image input device such as a personal computer (hereinafter referred to as a PC), a video input device of a PC, and Connected to a color printer.
[0005]
Among these connection destinations, when connecting to a TV monitor or another VTR, there is a problem that it takes much time and time to find a desired scene from the recorded tape. This is especially true when there are multiple tapes, since it is not known whether the desired content is included until the entire content of each tape is actually played.
[0006]
Of these connection destinations, a still image input device of a personal computer, a color printer, and the like need to extract a predetermined portion of a still image from recorded image data. However, it takes a very long time to extract the target image. For example, it takes a maximum of one hour to search for one image from a tape on which a one-hour moving image is recorded when viewed at a standard speed. It is possible to make it even shorter if you search with a high-speed search, but in the case of a tape, even if you press the stop after the desired image appears on the screen, it will advance considerably further. Operations such as moving to an image and making it stand still are necessary. Of course, if the speed of the high-speed search is too fast, you may miss it.
[0007]
In addition, after selecting a single still image from these images, when outputting to a personal computer or color printer as described above, depending on the shooting conditions, the exposure may be inappropriate or in focus. Or an inappropriate image may be output as a still image. Furthermore, even if a desired subject is captured, it is not captured at an appropriate position on the screen, so that an inappropriate image may be output as a still image.
[0008]
[Means for Solving the Problems]
  The present invention has been made in view of such problems, and in an apparatus for taking a moving image, the image recording apparatus further includes recording means as a still image,Make it possible to record only still images with high correlation with image data representing the characteristics of the subject in advance on a separate recording medium.An imaging recording apparatus is to be provided.
[0009]
  In order to solve this problem, for example, an imaging recording apparatus of the present invention has the following configuration. That is,
  An image pickup apparatus that has an image pickup device and sequentially records videos taken by the image pickup device as a moving image on a predetermined first recording medium,
  Means capable of mounting or connecting a second recording medium different from the first recording medium;
  Storage holding means for holding a plurality of types of image data representing the characteristics of the subject;
  The correlation between the video data captured by the image sensor input during the recording of the moving image and the one image data selected from the plurality of types of image data held in the storage holding unit is performed by performing a matching operation. When it is determined thatStill image recording control means for recording video data captured by the image sensor on the second recording medium as still image data.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings.
[0011]
FIG. 1 is a block diagram of a main part of a recording unit of a digital video camera in the embodiment.
[0012]
In the figure, 1 is a lens including focus adjustment, exposure adjustment, and an imaging optical system, 2 is a CCD as an imaging device, 3 is an AD converter, 4 is camera signal processing, 5 is an AE / AF circuit, 6 is VTR signal processing, 7 is a magnetic head, 8 is a tape, 9 is still image signal processing, 10 is still image recording detection, 11 is a flash memory, or a memory such as a backed up SRAM or hard disk device, and 12 is used to start / stop recording. A trigger switch, 13 is a still image recording switch for instructing recording of a still image, and 14 is a condition setting switch for setting conditions for a still image to be recorded.
[0013]
A subject image (not shown) is focused and exposed by the lens 1 and then formed on the imaging surface of the CCD 2. The CCD 2 photoelectrically converts the received subject image and outputs it as an imaging signal. The imaging signal is converted from analog to digital by the AD converter 3 to become a digital imaging signal, which is input to the camera signal processing 4 and the AE / AF circuit 5. In the camera signal processing 4, signal processing such as clamping, color separation, white balance, gamma correction, black clip, and white clip is performed on the input digital imaging signal to generate a digital video signal.
[0014]
On the other hand, in the AE / AF circuit 5, first, the signal in the predetermined detection area of the input digital video signal is integrated, and the integrated value is compared with a predetermined reference value. For exposure adjustment, a signal is generated so as to reduce the amount of light, and when the above integrated value is smaller than the reference value, the above integrated value matches the reference value by feedback control of generating a signal so as to increase the amount of light. To control.
[0015]
The AE / AF circuit 5 also detects the high frequency component of the input digital imaging signal, and uses the value in the predetermined area of the high frequency component to adjust the focus of the lens 1 so that the value becomes maximum. To control. This is done by, for example, a method called hill-climbing, which compares the current high-frequency component value with the previous high-frequency component value, and if the current is larger, the focus adjustment is further advanced in the same direction. If it is small, the focus adjustment is performed in the opposite direction, and if there is no change, the focus adjustment is stopped at that position.
[0016]
The AE / AF circuit 5 also outputs an AE / AF state signal representing the current AE and AF states to the still image recording detection 9. This AE / AF state signal indicates a good exposure state for AE when the above-mentioned integral value matches the above-mentioned reference value or the absolute value of the difference is smaller than a predetermined value. Otherwise, the exposure state is not good. As for AF, in the above-described hill-climbing control, good focus adjustment is performed when the current high-frequency component value matches the previous high-frequency component value, or the absolute value of the difference is not more than a predetermined value. It shows that it is in a state, otherwise it indicates that it is not in a good focus state.
[0017]
The digital video signal output from the camera signal processing 4 is supplied to the VTR signal processing unit 6, the still image signal processing unit 9, and the still image recording detection unit 10. First, the VTR signal processing unit 6 temporarily stores the input digital video signal in an internal frame memory, reads the signals stored in the frame memory for each block in a predetermined order, and converts each block by DCT. After post-quantization, further Huffman coding, and recording processing, recording is performed on the tape 8 through the head 7.
[0018]
In the still image signal processing unit 9, an image corresponding to a still image recording control signal generated by the still image recording detection unit 10 by a method described later is input to the still image signal such as JPEG compression. The compressed still image is generated by compression by image compression and stored in the memory 11. The memory 11 may be built-in, or may be a memory card (for example, a PCMCIA card) that can be attached to and detached from the main body, or a hard disk card.
[0019]
The compressed still image stored in the memory 11 is read by data suitable for a personal computer (for example, an NTSC video signal if the personal computer has a video capture function) If decompression processing is performed on the personal computer side, the recorded compressed encoded data is output as digital data as it is to the communication interface, and is output via a predetermined communication interface. On the personal computer side, the image data received via the interface is stored or displayed on, for example, a hard disk included in the personal computer. In the case of direct output to a printer, a control command that is decompressed and interpretable by the printer is output.
[0020]
When the memory 11 is detachable as described above, the memory 11 is removed from the housing of the present embodiment, inserted into a memory slot of a personal computer, and the compressed image data is directly read. In this case, although a processing program or hardware for decompressing the image data is required on the personal computer side, the time required for transfer can be greatly saved.
[0021]
The still image recording detection unit 10 receives the input digital video signal, the AE / AF state signal, and the output states of the switches 12, 13, and 14 when the digital video signal satisfies a predetermined condition as a still image. A still image recording control signal is generated so as to record an image.
[0022]
When the operator presses the trigger switch 12 at the start of photographing, first, the VTR signal processing unit 6 is controlled to start recording, and when pressed again, the recording is stopped. When the trigger switch 12 is pressed and the predetermined conditions are met, a still image recording control signal is generated by the still image recording detection 10 and a compressed still image is recorded in the memory 11.
[0023]
As the predetermined condition, for example, after the time from when the VTR signal processing unit 6 is in the recording start state until data is actually recorded on the tape 8, a still image recording control signal is generated, For example, a still image recording control signal is generated at a predetermined interval during the recording to 8.
[0024]
The still image recording switch 13 is a switch that is pressed when the operator wants to record a still image. When this is pressed, the still image recording switch 13 may generate a still image recording control signal unconditionally. In combination, for example, if the AE / AF state becomes good after the switch 13 is pressed (if the two signals indicating the good state described above are aligned), a still image recording control signal is generated. I did it. Actually, the AE / AF state may be slightly delayed after the still image recording switch 13 is operated, but there is no problem for the operator because the time is instantaneous.
[0025]
The condition setting switch 14 has several setting positions. For example, a person shooting mode that records a still image when a person enters a predetermined position with a predetermined size on the screen, and a still image when a landscape enters the predetermined position with a predetermined size on the screen There are three setting positions, that is, a landscape photographing mode to be turned off and an off state. When the input digital video signal of the still image recording detection unit 10 satisfies the set condition, a still image recording control signal is generated. When it is off, a still image recording control signal is not generated depending on the state of the image.
[0026]
In the still image recording detection unit 10, the condition for generating the still image recording control signal is not limited to the above-described conditions, but may be generated by a combination thereof.
[0027]
For example, when the person shooting mode is set by the condition setting switch 14, a person is detected from the image, and recording is being performed by the trigger switch 12, and a predetermined interval is always opened (to avoid imaging the same scene). For example, the still image recording control signal is generated only when the condition that the AF is good is satisfied.
[0028]
FIG. 2 is a detailed block diagram of the still image recording detection unit 10 in FIG.
[0029]
In the figure, 20, 21, 22, 23 and 24 are input terminals for a digital video signal, an AE / AF state signal (2 bits), an output of the switch 12, an output of the switch 13, and an output signal of the switch 14, respectively. . Reference numeral 25 denotes a memory that can sequentially write input images in the order of scanning and can read them randomly according to a given read address; 26 and 27, a ROM that holds a plurality of types of images representing the characteristics of the subject; and 28, a read from the memory 25 Address, address for reading the contents of the ROM 26 and ROM 27, an address generator for generating an address signal indicating selection of which part of the image representing the characteristics of the subject in the ROM, 29 is the output of the ROM 26 and ROM 27 Is a switch circuit for selecting. 30 uses the contents of the memory 25 and the output of the switch circuit 29 to perform a matching operation such as, for example, the square of the difference of the values of each pixel in the region or the accumulation of absolute values, thereby matching two image signals. A matching calculation unit 31 that outputs a value according to the degree, 31 is an image represented by the digital video signal by using the input matching degree, the output of the switch 14, and a signal representing the selection of the subject portion of the address generation unit 28. , A scene determination unit for determining whether or not a predetermined scene is satisfied, 32 is a timer that generates an output after a predetermined time when a signal is input, 33 is an OR gate, and 34 is an AND gate It is.
[0030]
In the above configuration, the digital video data input from the input terminal 20 is first written in the memory 25 in the scanning order.
[0031]
The written data is read according to the address generated by the address generation 28. The data written in the ROM 26 and the ROM 27 are respectively read according to the address generated by the address generator 28. Among these data, the switch circuit 14 selects one of them according to the signal input from the input terminal 24 and outputs it to the matching operation 30.
[0032]
In the matching operation 30, the matching degree of the image represented by the two input signals is obtained.
[0033]
For example, it is assumed that an image of a part of a human face, for example, an image of an eye, an image of a mouth, an image of a nose, or the like is recorded in the ROM 26 and the switch circuit 29 selects the ROM 26 side. When the human face is included in the image in the memory 26, the position of the human eye image output from the memory 26 read by the read address generated by the address generator 28 is read from the ROM 26. A large matching degree is output from the matching calculation 30 when it matches the position of the image of the eye that has been set. In addition, a great degree of matching can be obtained with the nose and nose and the mouth and mouth.
[0034]
For example, images of sky, buildings, trees, and the like are recorded in the ROM 27 as subjects other than human subjects. When the switch 29 selects the ROM 27 side, these images are stored in the image in the memory 26. When an image corresponding to the image is included, a large matching degree is obtained from the matching calculation 30.
[0035]
In the scene determination unit 31, an image represented by the digital video signal is obtained by using a signal representing the selection of the object portion generated by the output of the matching calculation 30, the output of the switch 14, and the address generation 28. Determine if it is a scene. This determination is roughly divided into three steps.
[0036]
First, in the first step, using the output of the matching calculation unit 30, the value and coordinates of the center of the portion with a high degree of matching are obtained for each portion.
[0037]
For example, as described above, when the switch circuit 29 selects the ROM 26 side on which the image of the human face portion is recorded, the position of the center or the center of gravity with a high degree of matching with the eye image The value is obtained, and the same is performed for the nose image and the mouth image.
[0038]
In the next step, candidates used for determination are extracted from the values at the center positions of the respective parts. For example, it is determined whether or not the standard deviation obtained by normalizing each value by the total variance exceeds a predetermined threshold value.
[0039]
In the final step, the final scene determination is performed using the relative positional relationship of the candidates obtained in the previous step. For example, if there are two eye candidates side by side in a predetermined range, there is a nose candidate below the center, and there is a mouth candidate below that, it is determined that there is a human face, If the face is within a predetermined range on the screen, a determination signal for taking a still image is output.
[0040]
Similarly, even when a landscape is detected, a determination signal for taking a still image is output when each image candidate meets a predetermined condition.
[0041]
This determination signal is input to the OR gate 33, and the output of the OR gate 33 is input to the AND gate 34 together with the AE / AF detection signal input from the input terminal 21. Other signals input to the OR gate 33 will be described later.
[0042]
In the AND gate 34, when the scene determination signal is generated as described above and the AE / AF signal indicating that both the AE and AF states are good is input, the detection signal is output to the output terminal 35. To output and control the above-described still image signal processing unit 9. That is, when the image represented by the digital video signal is determined to be a predetermined scene set by the switch 14 and the AF / AE state is good, the still image is recorded in the memory 11 described above.
[0043]
The output signal of the switch 12 input to the input terminal 22 is a predetermined time by the timer 32, for example, as described above, after a time from when the switch 12 is pressed until the shooting is started, An output is generated, and the output is input to the OR gate 33 together with the output of the scene determination 31 described above. When a predetermined time elapses after the switch 12 is pressed through this path, if the AE / AF state is good at that time, the still image at that time is recorded in the memory 11 described above.
[0044]
The output of the switch 13 is input to the OR 33 via the input terminal 23. Thereby, when the switch 13 is pressed, if the AE / AF state is good at that time, the still image at that time is recorded in the memory 11 described above.
[0045]
FIG. 3 is a detailed block diagram of the scene determination unit 31 in FIG. 2 in the embodiment.
[0046]
In the figure, 40 is an input terminal for the degree of matching of the output of the matching calculation unit 30, 41 is an input terminal for a signal for selecting a portion of the subject generated from the address generation unit 28, and 42 is an input for inputting the output of the switch 14. Terminal. 43 is a center detection unit that obtains the center of a portion with a high matching degree, 44 is a candidate extraction unit that extracts candidates for determination from the value of the matching degree at the obtained center, and 45 is a candidate obtained by the candidate extraction unit 44, It is a neural network for generating a determination signal.
[0047]
Reference numerals 47 to 59 are components of the center detection unit 43, 47 is a memory that sequentially writes the input matching degrees and reads in accordance with a read address generated from the control signal generation 48, and 48 is a read of the memory 47 described above. The control signal generators 49 to 53 for generating addresses and write signals for the registers 49 to 53 respectively read the read values of the memory 47 at the respective positions above, right, center, below and left of the target point. A register to be written in accordance with a write signal from the generator 48, 54 to 57 are subtractors, 58 is a code determination unit for determining the sign of the input signal, and 59 is a gate for the value of the register 51 in accordance with the result of the code determination It is a gate to do.
[0048]
The matching degree from the input terminal 40 is sequentially written in the memory 47. The data written in the memory 47 is read out by the control signal generator 48 and written in the registers 49-53. At this time, the control signal generator 48 stores the data at a certain point of interest in the register 51, the data at the position above the point of interest in the register 49, the right data in the register 50, and the lower data in the register 52. In addition, the read address of the memory 47 and the write signal of each register are generated so that the left data is written in the register 53, and at the same time, the coordinate value of the attention point is output to the candidate extraction unit 44. By this operation, the data written in the registers 49, 50, 52 and 53 is supplied to the subtracters 54 to 57, where the register 51 storing the matching degree of the center position is subtracted. Each of the subtracters 54 to 57 supplies the sign of the subtraction result to the sign determination unit 58. Based on the sign of each input subtraction result, the sign determination unit 58 generates a gate signal when the center value is the largest (when the signs from all the subtracters 54 to 57 are negative). . As a result, a gate signal is generated when the current point of interest is a two-dimensional maximum value. The gate 59 outputs the value of the central register 51 when the gate signal output from the sign determination 58 is generated.
[0049]
60 and 61 are components of the candidate extraction unit 44, 60 is a threshold comparison unit that compares the input with a predetermined reference value Sref and generates a comparison output, and 61 is a comparison generated by the threshold comparison unit 60 This is a memory for recording a signal representing the position of the inputted point of interest and the selection of the subject portion inputted from the input terminal 41 in accordance with the output.
[0050]
The output of the gate 59 is input to the threshold value comparison unit 60 and compared with a predetermined reference value Sref. When the output is larger than Sref, a comparison output is generated. When the comparison output is generated, the memory 61 records the coordinate value of the target point generated from the control signal generation 48 at that time and a signal indicating selection of the subject portion input from the input terminal 41.
[0051]
In the neural network 45, information recorded in the memory 61 is sequentially read out to the neural network in which the coefficients of each node determined by learning are set in advance, and those values and the output of the switch 14 input from the input terminal 42 are obtained. It is determined whether or not it is suitable as a still image scene, and the result is output as a determination signal.
[0052]
The neural network 45 is suitable as a still image scene composed of only data suitable for a still image scene, in which a predetermined image is captured within a predetermined range on the screen, and other images. Prepare the necessary data for learning and use the back annotation method. At that time, scene selection data is also input to learn the difference in judgment due to the difference in scene settings. Alternatively, the value of each node in the neural network 45 may be switched by the output of the switch 14.
[0053]
FIG. 4 is another detailed block diagram of the still image recording detection unit 10 in FIG. Reference numeral 70 denotes a subject recording switch, and 71 denotes a RAM.
[0054]
A feature of this configuration is that, when determining whether or not the subject is in the field of view, the operator can freely store the image of the subject to be compared.
[0055]
When the subject recording switch 70 is pressed, a part of the video digital signal being shot is written in the RAM 71. The image data to be written is, for example, image data in a region of a predetermined size (the size may be variable) centered on the center position of the visual field.
[0056]
When the output of the RAM 71 is selected by the switch circuit 29 by the switch 14 after the subject recording switch 70 is released, the matching calculation 30 and the scene determination unit 31 satisfy the predetermined condition as in the above example. The still image record detection result is output.
[0057]
By this operation, when the set subject is photographed by the operator, the image at that time can be written in the memory 11 as a still image.
[0058]
FIG. 5 is a diagram showing a viewfinder (or a display example of a display unit (not shown)) when the subject recording switch 70 in FIG. 4 is operated. In the figure, reference numeral 80 denotes a shooting range, 81 denotes a subject, and 82 denotes an area written in the RAM 71 within the shooting range. When the subject recording switch 70 is pressed, the image in this area is written into the RAM 71. Thereafter, when the subject recording switch 70 is released and the switch 14 is set as described above, when the subject image indicated by the range 82 is within a predetermined range on the screen, the image is recorded in the memory 11 as a still image. Is done.
[0059]
At this time, the address generated by the address generator 28 is not linear, and the N pixels of the memory 25 are subtracted by the M pixels of the RAM 71 or vice versa so that the detection can be performed even if the size of the subject changes slightly. If an address is generated so as to perform the above, it is possible to detect even subjects having different sizes depending on the ratio of N and M.
[0060]
With the above configuration, when searching for an image for which an operator has instructed to shoot a still image, it is only necessary to search for a still image stored in the memory 11 instead of the tape 8, and the operability related to the search is greatly improved. Will do. Moreover, since the still image is taken in a good state at least for both AE and AF, there is no problem that the searched image is out of focus as expected.
[0061]
If the memory 11 is detachable from the apparatus, it may be set in a portion where a memory such as a personal computer is mounted, and the data may be directly decrypted and decompressed by an application or the like.
[0062]
In the following, the procedure for searching on the apparatus side will be described with reference to FIG.
[0063]
The operator selects whether to search from a video captured as a still image or a video recorded as a search target by using an operation unit (not shown). If it is determined that the recording is a moving image recording, that is, a search from within the tape 8, the process proceeds to step S2 to perform a normal search process.
[0064]
On the other hand, when the still image search is selected, the process proceeds to step S3, where the still image signal processing unit 9 is controlled to decompress the still image data compressed and stored from the memory 11, and this is displayed on a display unit (not shown). indicate. When the process proceeds to step S3 for the first time, the first still image is reproduced and displayed. Further, since the display unit only needs to be able to confirm the video, it is not always necessary to display the expanded image as it is, and for example, it may be displayed after performing a thinning process.
[0065]
Next, the process proceeds to step S4, where an instruction as to whether or not the displayed image is the target is received and a determination is made. If there is an instruction that the image is not the target image, the process returns to step S3 to display the next still image. When the target still image can be found in this way and there is an instruction to that effect, the process proceeds to step S5, and still image data (still image data that has not been thinned out) corresponding to the image displayed at that time is not stored. Output via the interface shown.
[0066]
The above-described still image search processing procedure is an example, and the present invention is not limited thereby. For example, instead of sending the still images to be searched one frame at a time, it may be instructed how many frames are to be searched, or the last recorded frame may be searched. Further, unless the output instruction is given within a predetermined time, the video of the next frame may be automatically displayed.
[0067]
The output interface is, for example, an interface for outputting to a video capture card mounted on a television apparatus, VTR apparatus, personal computer, or the like, and outputs in the NTSC system. When outputting as digital data, for example, when a dedicated card is attached to a personal computer, still image data obtained by decompression is output as it is. However, if a device driver or application for performing decompression processing is running on the personal computer side, the compression-encoded data read from the memory 11 may be sent as it is. In this case, since the amount of information required for transfer is small, it can be transferred in a short time. In the case of direct output to a printer, a control command that can be interpreted by the printer is added and transferred via a dedicated interface. Which of these output interfaces is to be used may be selected in advance by the operation unit. In some cases, it is confirmed whether or not the interfaces other than the NTSC signal can communicate with each other, and if the communication is possible, the above data may be output to all the communicable interfaces. Will be good.
[0068]
In addition, the memory 11 in the embodiment is not limited to a memory IC card, literally, but may be a floppy disk, an MO, or a magnetic tape, and the present invention is not limited thereby.
[0069]
As described above, according to the present embodiment, it is possible to easily determine what scene is recorded as a moving image by viewing a still image recorded simultaneously with the moving image.
[0070]
In addition, the still image obtained at that time has appropriate focus adjustment and exposure, and an appropriate image can be obtained as a still image.
[0071]
Furthermore, since the image necessary for the operator as a still image is further recorded as a still image, the above-described convenience is further increased, and the recorded still image has a proper focus adjustment and exposure, and is recorded as a still image. A suitable image is obtained.
[0072]
Then, when the operator captures an image of the subject intended for shooting, and the image is automatically recorded as a still image when the image is suitable as a still image, the still image is recorded during movie shooting. This eliminates the need for an operation to perform the operation, eliminates the shake of the device that occurs when a switch for recording a still image is pressed, and obtains an appropriate moving image and still image.
[0073]
【The invention's effect】
  As described above, according to the present invention, the apparatus for taking a moving image further includes a recording unit as a still image,Record only still images with high correlation with image data representing the characteristics of the subject in advance on a separate recording medium.It becomes possible.
[0074]
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a configuration related to recording of an imaging apparatus according to an embodiment.
FIG. 2 is a detailed block configuration diagram of a still image record detection unit 10 in FIG.
3 is a detailed block configuration diagram of a scene determination unit 31 in FIG. 2;
4 is another detailed block configuration diagram of the still image recording detection unit 10 in FIG. 1. FIG.
5 is a view showing an image in the viewfinder when the subject recording switch 70 in FIG. 4 is operated. FIG.
FIG. 6 is a diagram illustrating an example of a still image search processing procedure in the embodiment.

Claims (7)

An image pickup apparatus that has an image pickup device and sequentially records videos taken by the image pickup device as a moving image on a predetermined first recording medium,
Means capable of mounting or connecting a second recording medium different from the first recording medium;
Storage holding means for holding a plurality of types of image data representing the characteristics of the subject;
The correlation between the video data captured by the image sensor input during the recording of the moving image and the one image data selected from the plurality of types of image data held in the storage holding unit is performed by performing a matching operation. An image recording apparatus comprising: a still image recording control unit that records video data captured by the image sensor on the second recording medium as still image data when it is determined that .   The imaging recording apparatus according to claim 1, wherein the second recording medium is detachable. An instruction means for instructing reproduction of the still image recorded on the second recording medium;
An output means for reproducing a still image stored in the second recording medium and outputting still image data to a predetermined interface when instructed by the instruction means. The imaging recording apparatus according to item 1.   The pre-memory holding means is a writable memory, and further comprises means for writing video data of a predetermined area photographed by the image sensor into the memory holding means. Imaging recording device. The imaging recording apparatus according to claim 1, further comprising a selection unit that selects a type of image data to be subjected to the matching calculation stored in the storage holding unit. And AF means for performing autofocus for imaging by the image sensor, and AE means for performing automatic exposure,
The still image recording control means outputs the still image as the second image when both a signal indicating that the AF means is in focus and a signal indicating that the AE means is in proper exposure are output. The imaging recording apparatus according to claim 1, wherein recording is performed on a recording medium. An image pickup device and means for sequentially recording a video taken by the image pickup device as a moving image on a predetermined first recording medium and capable of mounting or connecting a second recording medium different from the first recording medium And a control method for an imaging and recording apparatus having storage holding means for holding a plurality of types of image data representing characteristics of a subject ,
The plurality of types of images in which the second recording medium is mounted or connected, and video data captured by the image sensor during the recording of moving images on the first recording medium is held in the storage holding unit. When it is determined that there is a correlation by performing a matching operation with one image data selected from the data, the video data captured by the image sensor is recorded as still image data on the second recording medium. A method for controlling an imaging and recording apparatus, comprising:

Images