JP2020068395A - Imaging recording device and program - Google Patents

Abstract

To easily obtain a still image imaged and recorded at a desired shutter speed from a moving image imaged and recorded at a desired shutter opening ratio.SOLUTION: An imaging recording device includes imaging means that images a subject, a moving image recording means that records image data as a moving image, shutter speed setting means that sets an exposure time when the image is taken by the imaging means, shutter opening ratio setting means that sets a ratio between the exposure time and a time interval when continuous acquisition is performed, and frame rate setting means that sets a frame rate which is the number of acquisitions per unit time when continuous acquisition is performed according to the exposure time and the ratio.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an imaging recording device and a program, and more particularly, to an imaging recording device that individually sets a shutter speed suitable for a still image and a shutter opening ratio suitable for a moving image, and determines a frame rate according to those settings. Regarding the program.

  2. Description of the Related Art In recent years, the performance of image pickup recording apparatuses, so-called digital cameras, has been steadily improving with the development of electronic technology and computer technology. In particular, the amount of information that can be processed per unit time is increasing, and imaging and recording of moving images with higher resolution and higher frame rate are realized. In addition, it has become possible to capture and record moving images with higher image quality. The higher resolution is, for example, 4096 pixels in the horizontal direction and 2160 pixels in the vertical direction. The higher frame rates are, for example, 60 fps (frame per second), 120 fps, and 240 fps.

  As a result, in recent years, an increasing number of cameras have the concept of recording a moving image with high resolution and also using an arbitrary frame image in the moving image as a still image. For example, the acquired moving image is used as an Internet distribution moving image, and the acquired still image is used as a photograph in a book which is a paper medium.

  Furthermore, various applications relating to frame rate setting have been made as applications of the imaging and recording functions with the high frame rates that have become feasible. Conventionally, moving images have only been captured and recorded and reproduced at a specific frame rate in accordance with the constraints of television broadcasting facilities and the like. The specific frame rate is, for example, 29.97 fps or 25.00 fps. In recent years, without limiting to those specific frame rates, it is possible to freely set the frame rate at the time of image capture and recording and the frame rate at the time of playback, and the applications for performing video expression such as slow motion, fast motion, ramping, etc. are also increasing. ing.

  In particular, restrictions on Internet-distributed videos and the like, which have become remarkably widespread in recent years, are relatively few, unlike TV broadcasting. While various moving image file format standards have been proposed, there is also a proposal to operate at a variable frame rate.

  When capturing an image at such a higher frame rate, there is a demand for easily confirming the content of the image on the monitor provided in the digital camera. In that case, there is a proposal to change the frame rate of the moving image displayed on the monitor according to the shutter speed. It is disclosed in Patent Document 1.

  Further, there is a demand to appropriately secure the light blocking time of the image pickup device while maintaining the flexibility of the frame rate and the shutter speed. In that case, a proposal has been made to control the two shutter members based on the settings of the frame rate and the shutter speed. It is disclosed in Patent Document 2.

Patent No. 5389576 Japanese Patent No. 4645692

  However, the above conventional example has the following problems. When an image is recorded as a moving image and an arbitrary frame image in the moving image is also used as a still image, it is difficult to set the shutter speed at the time of image recording to be suitable for both moving images and still images. There were cases.

  When setting the shutter speed for the purpose of capturing and recording a still image, increasing the shutter speed can capture the moment of a fast-moving subject. The high shutter speed is, for example, 1/2000 second. On the contrary, if the shutter speed is slowed down, a feeling of fluidity can be expressed. The slow shutter speed is, for example, 1/30 second.

  When setting the shutter speed for the purpose of capturing and recording moving images, by appropriately adjusting the ratio of the shutter speed (exposure time) to the frame period (reciprocal of the frame rate) (hereinafter referred to as the shutter open ratio), A moving subject can be smoothly reproduced.

  The shutter opening ratio SR, the shutter speed SS, and the frame period FT have the relationship shown in the following formula.

SR = SS / FT
The appropriate shutter open ratio SR is, for example, 50%. If the shutter open ratio SR is too small, the motion of the subject cannot be expressed smoothly. The shutter opening ratio SR that is too small is, for example, 5%. If the shutter open ratio SR is too large, the motion of the subject becomes unclear. The shutter opening ratio SR that is too large is, for example, 100%.

  As described above, by appropriately setting the shutter speed SS, a video expression for a moving subject is performed. At this time, it may be difficult to set the shutter speed SS to a state suitable for both moving images and still images. For example, this is a case where both the image capturing and recording of a still image that captures the moment of a fast-moving subject and the image capturing and recording of a moving image that smoothly reproduces the motion of the subject. When the frame rate is set to 60 fps in advance, the frame cycle FT is 1/60 seconds.

  At that time, if 1/240 seconds is set as the shutter speed SS suitable for capturing and recording still images, the shutter opening angle SR suitable for capturing and recording moving images becomes 25% even though 50% is desired. I will end up. Similarly, if the shutter opening angle SR is set to 50% and the shutter speed SS is set to 1/120 seconds, it is not possible to capture and record a still image capturing the moment of a fast-moving subject.

  The shutter opening ratio SR may be referred to as a shutter opening angle or a shutter angle. It is derived from the rotary shutter mechanism used when capturing and recording moving images with a film camera. The rotary shutter rotates once every frame, that is, 360 degrees. By multiplying the 360 degrees by the shutter opening ratio SR, the shutter opening angle or the shutter angle is converted. For example, the shutter opening ratio SR50% corresponds to the shutter opening angle or the shutter angle of 180 degrees.

  The present invention has been made in view of the above points, and when capturing and recording as a moving image and also using an arbitrary frame image in the moving image as a still image, the shutter at the time of capturing and recording is used. The purpose is to make the speed suitable for both moving images and still images.

  In order to achieve the above object, a first invention according to the present application is an image pickup unit that picks up an image of a subject and outputs image data, and a moving image recording unit that continuously acquires the image data and records it as a moving image. A shutter speed setting means for setting an exposure time when the image pickup means takes an image, a shutter opening ratio setting means for setting a ratio between the exposure time and a time interval for continuous acquisition, and the exposure time And a frame rate setting means for setting a frame rate which is the number of acquisitions per unit time when the continuous acquisition is performed according to the ratio.

  In order to achieve the above object, a second invention according to the present application is an imaging step of imaging a subject and outputting image data, and a moving image recording step of continuously acquiring the image data and recording it as a moving image. A shutter speed setting step for setting an exposure time when the image is taken by the image pickup means, a shutter open ratio setting step for setting a ratio between the exposure time and a time interval for continuous acquisition, and the exposure time And a frame rate setting step of setting a frame rate which is the number of acquisitions per unit time when the continuous acquisition is performed according to the ratio.

  According to the present invention, when an image is recorded as a moving image and an arbitrary frame image in the moving image is also used as a still image, the shutter speed at the time of image recording is suitable for both the moving image and the still image. Can be In particular, as described above, by appropriately setting the shutter speed, it is possible to express a desired video image of a moving subject for both moving images and still images. For example, it is possible to combine a video expression with a still image that captures the moment of a fast-moving subject and a video expression with a moving image that smoothly reproduces the movement of the subject.

It is a block diagram which shows the structure of the imaging recording device in 1st Embodiment. It is a figure explaining the structure of the user interface in 1st Embodiment. It is a figure explaining the structure of moving image data. FIG. 6 is a diagram illustrating a timing relationship between a shutter speed, a shutter open ratio, and a frame period in the first embodiment. 6 is a flowchart illustrating a procedure of frame rate setting and image capturing / recording according to the first embodiment. 9 is a table illustrating a frame rate setting method in the second embodiment. It is a block diagram which shows the structure of the imaging recording device in 3rd Embodiment. It is a figure explaining the structure of the user interface in 3rd Embodiment.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

<First Embodiment>
FIG. 1 is a block diagram showing the configuration of an image capturing / recording / reproducing apparatus according to the first embodiment of the present invention.

  Reference numeral 100 is an imaging recording / reproducing apparatus to which the present invention is applied. Reference numeral 101 denotes a lens, which adjusts the optical path of light emitted or reflected from the subject. Reference numeral 102 denotes a sensor (photoelectric conversion element), which receives light whose optical path is adjusted by the lens 101 and converts the light into an electric signal. A signal processing unit 103 inputs an electric signal converted and output by the sensor 102, performs amplification, debayering, and other image quality-related processing to generate image data. An image pickup control unit 104 integrally controls the lens 101, the sensor 102, and the signal processing unit 103 to perform desired image pickup.

  A frame memory 105 temporarily stores the image data generated by the signal processing unit 103. An encoder 106 encodes the image data accumulated in the frame memory 105 to generate encoded data. An encode buffer memory 107 temporarily stores the encoded data generated by the encoder 106.

  Reference numeral 117 denotes a recording medium on which image data captured and recorded by the image capturing / recording / reproducing apparatus 100 is recorded. Reference numeral 108 denotes a recording medium buffer memory, which is used to temporarily store image data when reading and writing the image data recorded in the recording medium 117. The encoded data accumulated in the encode buffer memory 107 is transferred to the recording medium buffer memory 108, transferred to the recording medium 117 and recorded.

  A reproduction decoder 109 reads out the encoded data to be reproduced from the data recorded in the recording medium buffer memory 108 and performs decoding. A video display unit 110 displays the image data decoded by the reproduction decoder 109. This allows the operator to view the reproduced image. The video display unit 110 can also directly display the image data generated by the frame memory 105. Thereby, the content of the image data captured and recorded can be confirmed at any time before and during the execution of the image recording.

  Reference numeral 111 denotes a recording control unit, which controls the image recording / reproducing apparatus 100 for recording. When performing recording control, the operations of the encoder 106 and the recording medium buffer memory 108 are controlled as necessary. Reference numeral 112 denotes a reproduction control unit, which controls reproduction of the image recording / reproducing apparatus 100. When performing reproduction control, the operations of the recording medium buffer memory 108 and the reproduction decoder 109 are controlled as necessary.

  An operation unit 113 is used by an operator who operates the image capturing / recording / reproducing apparatus 100 to input various operation instructions regarding the image capturing / recording / reproducing apparatus 100 via an operation input member such as a button or a touch panel (not shown). An operation instruction signal detected and input by the operation unit 113 is transmitted to the recording control unit 111, and the recording control unit 111 executes recording control based on the received operation instruction signal. Similarly, the operation instruction signal is transmitted to the reproduction control unit 112, and the reproduction control unit 112 executes reproduction control based on the received operation instruction signal.

  Reference numeral 114 denotes a system control microcomputer, which executes control of each unit of the image recording / reproducing apparatus 100. The operation unit 113 detects an operation instruction input by the operator, and sends a control request to the imaging control unit 104, the recording control unit 111, and the reproduction control unit 112.

  Reference numeral 115 denotes a mode control unit, which executes mode control of the imaging recording / reproducing apparatus 100. In particular, it controls the operation modes of the recording control unit 111 and the reproduction control unit 112. The mode control is executed based on the operation instruction signal detected and input by the operation unit 113 and the system control microcomputer 114.

  The shutter speed at the time of image recording is determined by the system control microcomputer 114 according to the operation support input by the operator detected by the operation unit 113. According to the determined shutter speed, the system control microcomputer 114 sends a control signal to the imaging control unit 104. The imaging control unit 104 drives the sensor 102 according to the control signal received from the system control microcomputer 114, and controls the exposure time and the light blocking time, that is, the so-called electronic shutter control. The shutter speed determined by the system microcomputer 114 can be displayed on the video display unit 110. As a result, the operator can check the control state regarding the shutter speed of the image recording / reproducing apparatus 100 at any time.

  The frame rate at the time of image recording is determined by the system control microcomputer 114 according to the operation support input by the operator detected by the operation unit 113. According to the determined shutter speed, the system control microcomputer 114 sends a control signal to the imaging control unit 104. The imaging control unit 104 drives the sensor 102 according to a control signal received from the system control microcomputer 114, and controls an operation cycle of the sensor 102 regarding exposure and light shielding, that is, a so-called frame rate. Further, the imaging control unit 104 controls the signal processing unit 103 according to the control signal received from the system control microcomputer 114, and controls the operation cycle of the signal processing unit 103, that is, the so-called frame rate. In this way, the imaging control unit 104 controls the frame rate while synchronizing the operation cycles of both the sensor 102 and the signal processing unit 103. The frame rate determined by the system microcomputer 114 can be displayed on the video display unit 110. As a result, the operator can check the control state regarding the frame rate of the imaging recording / reproducing apparatus 100 at any time.

  FIG. 2 is a diagram of a user interface displayed on the video display unit 110 of the image capturing / recording / reproducing apparatus 100 according to the first embodiment of the present invention.

  Reference numeral 201 denotes the entire display area of the video display unit 110. A subject 202 is, for example, the upper half of the body of a person, whose optical path is adjusted by the lens 101, photoelectrically converted by the sensor 102, and amplified, debayered, and image-quality processed by the signal processing unit 103.

  A frame rate display unit 203 displays the frame rate determined by the system control microcomputer 114. Reference numeral 204 denotes a shutter speed display unit, and 204 denotes a shutter speed display unit, which displays the shutter speed determined by the system control microcomputer 114 according to the operation support input by the operator detected by the operation unit 113. . A shutter open ratio display unit 205 displays the shutter open ratio SR determined by the system control microcomputer 114 according to the operation support input by the operator detected by the operation unit 113.

  The shutter speed at the time of image recording is determined by the system control microcomputer 114 according to the operation support input by the operator detected by the operation unit 113, and is displayed on the shutter speed display unit 204. Thus, the operator can easily confirm the shutter speed determined by the system control microcomputer 114 as a result of the operation of the operation unit 113 by himself by visually observing the shutter speed display unit 204.

  The shutter open ratio SR at the time of image recording is determined by the system control microcomputer 114 according to the operation support input by the operator detected by the operation unit 113, and is displayed on the shutter open ratio display unit 205. As a result, the operator can easily confirm the shutter open ratio SR determined by the system control microcomputer 114 as a result of operating the operation unit 113 by himself / herself by visually observing the shutter open ratio display unit 205. it can.

  The frame rate at the time of image recording is determined by the system control microcomputer 114 according to the operation support input by the operator detected by the operation unit 113, and is displayed on the frame rate display unit 203. As a result, the operator can easily confirm the frame rate determined by the system control microcomputer 114 as a result of the operation of the operation unit 113 by himself by visually recognizing the frame rate display unit 203.

  FIG. 3 is a diagram illustrating a data structure of moving image data according to the first embodiment of the present invention.

  Reference numeral 300 denotes the entire moving image data. The resolution of the moving image data 300 is, for example, 4096 pixels in the horizontal direction and 2160 pixels in the vertical direction. The frame rate of the moving image data 300 is, for example, 120 fps.

  Each of 301, 302, 303, 304, 305, 306, 307, 308, 309, 310, 311, 312, 313, 314, 315, 316, and 317 indicates that each is image data of one frame.

  The moving image data 300 can be generated by performing image recording using the image recording / reproducing device 100. Then, the moving image data 300 can be used as a moving image, and the image data of a specific frame can be extracted and used as a still image. For example, only the image data 307 can be extracted from the moving image data 300 and used as a still image.

  For example, when the image data is recorded in a data file format in which the image data of one frame is stored as one data file, the image data of the specific frame can be extracted by extracting only the specific data file. In that case, it is not necessary to use the editing application software, and it can be realized by using only the file management software. As such a data file format, for example, there is a DPX (Digital Picture eXchange) format. In that case, the moving image data 300 is a set of 17 DPX format files. When extracting only the image data 307, one DPX format file corresponding to the image data 307 may be extracted.

  Further, for example, when image data is recorded in a data file format in which image data of a plurality of frames is stored as one data file, image data of a specific frame can be taken out by using editing application software. In that case, for example, it can be realized by using moving image editing application software having a still image extracting function. An example of such a data file format is the MXF (Material Xchange Format) format. In that case, the moving image data 300 is a set of one DPX format file. When extracting only the image data 307, one still image file corresponding to the image data 307 may be extracted using moving image editing application software having a still image extracting function. As a file format of such a still image file, for example, there is a JPEG (Joint Photographic Experts Group) format.

  FIG. 4 is a diagram illustrating a timing relationship among the shutter speed SS, the shutter open ratio SR, and the frame period FT according to the first embodiment of the present invention.

  FIG. 4A is a diagram when the shutter speed SS is 1/240 seconds, the shutter open ratio SR is 25%, and the frame period FT is 1/60 seconds (that is, the frame rate is 60 fps).

  Reference numeral 400 denotes the entire moving image data. Reference numeral 406 indicates that the exposure corresponding to the image data 306 is being executed. Reference numeral 426 indicates the exposure time for the exposure 406, that is, the shutter speed SS. The shutter speed SS426 is 1/240 second.

  The shutter speed SS426 is determined by the system control microcomputer 114 according to the operation support input by the operator detected by the operation unit 113. According to the determined shutter speed, the system control microcomputer 114 sends a control signal to the imaging control unit 104. The imaging control unit 104 drives the sensor 102 according to the control signal received from the system control microcomputer 114, and controls the exposure time and the light blocking time, that is, the so-called electronic shutter control.

  Reference numeral 407 indicates that the exposure corresponding to the image data 307 is being executed. Reference numeral 427 indicates the exposure time for the exposure 407, that is, the shutter speed SS. The shutter speed SS427 is the same as the shutter speed SS426 and is 1/240 second.

  Reference numeral 408 indicates that the exposure corresponding to the image data 308 is being executed.

  A frame period FT 446 indicates a period from the start timing of the exposure 406 to the start timing of the exposure 407. The frame period FT446 is 1/60 second. A frame period FT 447 indicates a period from the start timing of the exposure 407 to the start timing of the exposure 408. The frame period FT447 is the same as the frame period FT446 and is 1/60 second.

  The shutter speed SS426 and the shutter speed SS427 are 1/240 seconds, and the frame period FT446 and the frame period FT447 are 1/60 seconds, so the shutter open ratio SR of the moving image data 400 is 25%.

  FIG. 4B is a diagram when the shutter speed SS is 1/240 seconds, the shutter open ratio SR is 50%, and the frame period FT is 1/120 seconds (that is, the frame rate is 120 fps). Only the differences from FIG. 4A will be described.

  Reference numeral 460 represents the entire moving image data.

  A frame cycle FT 466 indicates a period from the start timing of the exposure 406 to the start timing of the exposure 407. The frame period FT466 is 1/120 second. A frame period FT 467 indicates a period from the start timing of the exposure 407 to the start timing of the exposure 408. The frame period FT467 is the same as the frame period FT466 and is 1/120 second.

  Since the shutter speed SS426 and the shutter speed SS427 are 1/240 seconds and the frame period FT446 and the frame period FT447 are 1/120 seconds, the shutter open ratio SR of the moving image data 460 is 50%.

  When only the image data 307 is used as a still image, the moving image data 400 and the moving image data 460 are both imaged and recorded at a shutter speed SS of 1/240 seconds. When the operator aims to express a still image by capturing a moment of a fast-moving subject corresponding to a shutter speed of SS1 / 240 seconds, the image data 307 and the moving image data 460 extracted as a still image from the moving image data 400. Any of the image data 307 extracted as a still image from can achieve the purpose.

  On the other hand, when the moving image data 400 and the moving image data 460 are used as moving images, the image representation as a moving image obtained from each moving image data may be different.

  When the shutter speed is set for the purpose of capturing and recording a moving image, it is possible to smoothly reproduce a moving subject by appropriately adjusting the shutter opening ratio SR. If the shutter open ratio SR is too small, the motion of the subject cannot be expressed smoothly. If the shutter open ratio SR is too large, the motion of the subject becomes unclear.

  The shutter open ratio SR of the moving image data 400 is 25%, whereas the shutter open ratio SR of the moving image data 460 is different from 50%. Therefore, the image representation as a moving image obtained from each moving image data is different.

  In particular, when the operator aims at the image expression with smoothness and sharpness equivalent to the shutter opening angle SR of 50%, the moving image data 460 can achieve the purpose because the shutter opening angle SR is 50%. . However, since the shutter opening angle SR of the moving image data 400 is 25%, there is a problem that the purpose cannot be achieved.

  FIG. 5 is a flowchart illustrating a procedure of frame rate setting and image capturing / recording processing performed by the system control microcomputer 114 of the image capturing / recording / reproducing apparatus 100 according to the first embodiment of the present invention.

  S500 indicates the start of the frame rate setting and the imaging recording process.

  In step S501, the presence / absence of a shutter speed SS setting operation is detected. It is detected whether the operator operates the operation unit 113 to perform the shutter speed SS setting operation. If there is no operation, the presence / absence of the shutter speed SS setting operation is continuously detected in S501. If there is an operation, the process proceeds to S502.

  In S502, the shutter speed SS is set. In the present embodiment, the input value of the shutter speed SS input by the operator operating the operation unit 113 is used as it is as the set value. For example, when the operator operates the operation unit 113 to input 1/240 seconds as the shutter speed SS, 1/240 seconds is set as the shutter speed SS set value of the image recording / reproducing apparatus 100. The shutter speed SS set value 1/240 seconds is displayed on the shutter speed display unit 204 of the image display unit 110. Thereby, the operator can confirm that the value input by operating the operation unit 113 by himself / herself is set as the shutter speed SS set value of the imaging recording / reproducing apparatus 100.

  In step S503, the presence or absence of the shutter open ratio SR setting operation is detected. It is detected whether the operator operates the operation unit 113 to perform the shutter open ratio SR setting operation. When there is no operation, the presence / absence of the shutter open ratio SR setting operation is continuously detected in S503. If there is an operation, the process proceeds to S504.

  In step S504, the shutter open ratio SR is set. In the present embodiment, the input value of the shutter open ratio SR input by the operator operating the operation unit 113 is used as it is as the set value. For example, when the operator operates the operation unit 113 to input 50% as the shutter opening ratio SR, 50% is set as the shutter opening ratio SR set value of the image recording / reproducing apparatus 100. The shutter open ratio set value of 50% is displayed on the shutter open ratio display unit 205 of the image display unit 110. Thereby, the operator can confirm that the value input by operating the operation unit 113 by himself is set as the shutter open ratio setting value of the imaging recording / reproducing apparatus 100.

  In step S505, the frame rate is set according to the set shutter speed SS and shutter open ratio SR. Specifically, the frame period FT (the reciprocal of the frame rate) is calculated from the shutter speed SS and the shutter opening ratio SR by the following formula.

FT = SS / SR
For example, when the shutter speed SS is 1/240 seconds and the shutter opening ratio SR is 50% (0.5), the frame period FT is 1/120 seconds. The frame rate, which is the reciprocal of the frame period FT, is 120 fps.

  The calculated value is set as the frame rate of the image recording / reproducing apparatus 100. For example, if the calculated result is 120 fps, 120 fps is set as the frame rate setting value of the image recording / reproducing apparatus 100. The frame rate setting value 120 fps is displayed on the frame rate display unit 203 of the video display unit 110. Thereby, the operator automatically confirms that the frame rate setting value of the image recording / reproducing apparatus 100 is automatically set according to the shutter speed SS input value and the shutter open ratio SR input value input by operating the operation unit 113. You can check. For example, the operator can confirm that the frame rate of 120 fps is automatically set by setting the shutter speed SS to 1/240 seconds and the shutter opening ratio SR to 50%.

  In step S506, the presence / absence of a recording start operation is detected. It is detected whether the operator has operated the operation unit 113 to perform a recording start operation. If there is no operation, the presence / absence of a recording start operation is continuously detected in S506. If there is an operation, the process proceeds to S507.

  In step S507, image capturing and recording are executed according to the set shutter speed SS and frame rate. Here, the set shutter speed SS is the shutter speed SS set in S502, and is, for example, 1/240 seconds. Here, the set frame rate is the frame rate set in S505, and is 120 fps, for example. In S507, image capturing and recording are executed at a shutter speed of SS1 / 240 seconds and a frame rate of 120 fps, for example.

  In step S508, the presence / absence of a recording end operation is detected. It is detected whether or not the operator operates the operation unit 113 to perform a recording end operation. If there is no operation, the image pickup recording is continued in S507. If there is an operation, the process proceeds to S509.

  S509 indicates the end of the frame rate setting and the imaging recording process.

  In this way, the image pickup and recording are executed along the shutter speed SS and the shutter opening ratio SR set by the operator operating the operation unit 113, so that the image pickup and recording are performed by the operator in the image representation as set. It is possible to acquire moving images and still images.

  Specifically, the operator operates the operation unit 113 for a shutter speed SS of 1/240 seconds for the purpose of expressing a still image that captures the moment of a fast-moving subject corresponding to a shutter speed of SS / 240 seconds. To set. Since the still image data extracted from the imaged and recorded moving image data is imaged and recorded at the shutter speed SS of 1/240 seconds, it is possible to obtain a desired still image image representation.

  Further, the operator operates the operation unit 113 to set 50% as the shutter opening ratio SR for the purpose of image expression with smoothness and sharpness corresponding to the shutter opening ratio SR of 50%. Since the image data recorded and recorded has the shutter open ratio SR of 50%, it is possible to obtain a desired video expression of the moving image.

  As described above, according to this embodiment, when an image is recorded as a moving image and an arbitrary frame image in the moving image is also used as a still image, the shutter speed at the time of image capturing and recording is set to the moving image and the still image. It can be in a state suitable for both images.

  In particular, as described above, by appropriately setting the shutter speed, it is possible to express a desired video image of a moving subject for both moving images and still images. For example, it is possible to achieve both the video expression using a still image that captures the moment of a fast-moving subject and the video expression using a moving image that smoothly reproduces the movement of the subject while ensuring clarity.

<Second Embodiment>
In the following, the second embodiment will be described only with respect to the differences from the first embodiment.

  FIG. 6 is a table illustrating a frame rate setting method according to the second embodiment of the present invention.

  600 shows the whole of this table. The table 600 is stored in a ROM (Read Only Memory) (not shown) included in the system control microcomputer 114 together with a processing program executed by the system control microcomputer 114.

  A column 601 indicates a settable value of the shutter speed SS. A column 602 indicates a settable value of the shutter open ratio SR. A column 603 indicates a settable value of the frame rate.

  Reference numeral 611 is a line indicating an item in this table. Reference numerals 612, 613, 614, 615, 616, 617, 618, and 619 denote combinations of shutter speed SS and shutter open ratio that can be set as settings of the image recording / reproducing apparatus 100, and frame rates determined accordingly. It is a line showing a combination.

  When the operator operates the operation unit 113 to input the input value of the shutter speed SS, an operation of selecting from the shutter speed settable values defined in the column 601 is performed. Similarly, when the operator operates the operation unit 113 to input the input value of the shutter open ratio SR, an operation of selecting from the shutter open ratio settable values defined in the column 602 is performed.

  At that time, the input value of the shutter opening ratio selectable by the operator varies depending on the input value of the shutter speed SS selected by the operator. For example, when 1/120 sec is selected as the shutter speed SS, 83% can be selected as the shutter open ratio, but 25% cannot be selected. Further, when 1/240 seconds is selected as the shutter speed SS, 25% can be selected as the shutter open ratio, but 83% cannot be selected.

  Similarly, when 83% is selected as the shutter opening ratio SR, 1/120 seconds can be selected as the shutter speed SS, but 1/240 seconds cannot be selected. Further, when 25% is selected as the shutter opening ratio SR, 1/240 seconds can be selected as the shutter speed SS, but 1/120 cannot be selected as the shutter speed SS.

  This is to limit the setting range of the frame rate set as a result of selecting the shutter speed SS and the shutter opening ratio SR. When playing back and editing a moving image, it may be desirable to limit the usable variable range of the frame rate to a certain range depending on the environment in which it is performed. In the case of the table 600, the variable range of the frame rate is limited to 40 fps or more and 160 fps or less. This avoids setting a frame rate that is too high or a frame rate that is too low, thereby ensuring convenience.

  In the table 600, the settable values of the frame rate are only six levels of 40 fps, 60 fps, 80 fps, 100 fps, 120 fps, and 160 fps. By limiting the selectable stages in this way, it is possible to ensure the ease of setting when the operator operates and sets, and the ease of handling the image data generated by imaging and recording. Further, by reducing the operation modes, the development cost including the test process can be reduced, and the product can be provided at a lower price.

<Third Embodiment>
Hereinafter, the third embodiment will be described only with respect to the differences from the second embodiment.

  FIG. 7 is a block diagram showing the arrangement of an image capturing / recording / reproducing apparatus according to the third embodiment of the present invention.

  Only the differences from FIG. 1 will be described.

  Reference numeral 701 is an ND filter. The ND filter 701 is controlled by the imaging control unit 104 and adjusts the amount of light received by the sensor 102. Reference numeral 702 is a diaphragm. The diaphragm 702 is controlled by the imaging control unit 104 and adjusts the amount of light received by the sensor 102.

  The system control microcomputer 114 determines the number of ND filter steps, which is the control value of the ND filter, based on the input value input by the operator operating the operation unit 113. The imaging control unit 104 controls the ND filter 701 according to the number of ND filter stages determined by the system control microcomputer 114.

  The F value that is the control value of the aperture is determined by the system control microcomputer 114 based on the input value input by the operator operating the operation unit 113. The imaging control unit 104 controls the aperture 702 according to the F value determined by the system control microcomputer 114.

  Further, the ISO sensitivity that is the control value of the amplification processing in the signal processing unit 103 is determined by the system control microcomputer 114 based on the input value input by the operator operating the operation unit 113. The imaging control unit 104 controls the signal processing unit 103 according to the ISO sensitivity determined by the system control microcomputer 114.

  FIG. 8 is a diagram of a user interface displayed on the video display unit 110 of the imaging recording / reproducing apparatus 100 according to the third embodiment of the present invention.

  Only the differences from FIG. 2 will be described.

  Reference numeral 801 is an ND filter display portion. The number of ND filter stages determined by the system control microcomputer 114 is displayed. Reference numeral 802 is a diaphragm display unit. The F value determined by the system control microcomputer 114 is displayed. Reference numeral 803 is an ISO sensitivity display section. The ISO sensitivity determined by the system control microcomputer 114 is displayed.

  In some cases, the system control microcomputer 114 performs AE (Auto Exposure) control in response to an operation input by the operator operating the operation unit 113. In the AE control, the ND filter, the aperture, the ISO sensitivity, and the shutter speed SS that influence the exposure adjustment are integrally controlled so that the image data output from the signal processing unit 103 has a desired exposure value.

  In this case, when the ND filter or the aperture or the ISO sensitivity is changed, the shutter speed SS may be automatically adjusted and changed by the AE control.

  Even in that case, the frame rate can be determined according to the shutter opening ratio SR and the shutter table 600 that are separately set.

  As described above, even when the ND filter or the diaphragm or the ISO sensitivity is changed, it is possible for the operator to obtain a desired video expression for a still image and a video expression for a moving image.

  Although the present embodiment describes the imaging recording / reproducing apparatus, it may be implemented as a moving image processing program executed by a personal computer or the like.

  Although the present invention has been described above in detail based on its preferred embodiments, the present invention is not limited to these specific embodiments, and various embodiments within the scope not departing from the gist of the present invention are also included in the present invention. included. Part of the above-described embodiments may be combined as appropriate.

100 image recording / reproducing apparatus, 101 lens, 102 sensor (photoelectric conversion element),
103 signal processing unit, 104 imaging control unit

Claims (10)

  Image pickup means for picking up an image of a subject and outputting image data, moving image recording means for continuously acquiring the image data and recording it as a moving image, and shutter speed setting for setting an exposure time when the image pickup means takes an image Means, shutter opening ratio setting means for setting the ratio of the exposure time and the time interval at the time of continuous acquisition, and the number of acquisitions per unit time at the time of continuous acquisition according to the exposure time and the ratio. An image-capturing recording apparatus, comprising: a frame rate setting unit that sets a certain frame rate.   The image capturing / recording / reproducing apparatus according to claim 1, wherein the shutter speed setting unit changes a settable range of the exposure time according to a set value of the ratio.   The image capturing / recording / reproducing apparatus according to claim 1, wherein the shutter open ratio setting unit changes a settable range of the ratio according to a set value of the exposure time.   The frame rate settable value of the frame rate is discrete, and the shutter speed setting means determines the settable value of the exposure time according to the frame rate settable value. The imaging recording / reproducing apparatus according to claim 1.   The frame rate settable value of the frame rate is discrete, and the shutter open ratio setting means determines the settable value of the ratio according to the frame rate settable value. The imaging recording / reproducing apparatus according to claim 1.   7. An ISO sensitivity setting means for setting an ISO sensitivity when an image is picked up by the image pickup means, wherein the frame rate setting means sets a frame rate according to a set value of the ISO sensitivity. 6. The imaging recording / reproducing device according to any one of 1 to 5.   6. The apparatus according to claim 1, further comprising a gain setting unit that sets a gain when the image is captured by the image capturing unit, and the frame rate setting unit sets a frame rate according to a set value of the gain. The imaging recording / reproducing device according to any one of 1.   6. An aperture setting means for setting an aperture when an image is captured by the image capturing means, wherein the frame rate setting means sets a frame rate according to a set value of the aperture. The imaging recording / reproducing device according to any one of 1.   7. An ND filter setting means for setting an ND filter when an image is picked up by the image pickup means, wherein the frame rate setting means sets a frame rate according to a set value of the ND filter. 6. The imaging recording / reproducing device according to any one of 1 to 5.   An image pickup step of picking up an image of a subject and outputting image data, a moving image recording step of continuously acquiring the image data and recording it as a moving image, and a shutter speed setting for setting an exposure time when the image is picked up by the image pickup means. Step, shutter opening ratio setting step for setting the ratio of the exposure time and the time interval at the time of continuous acquisition, the number of acquisitions per unit time at the time of continuous acquisition according to the exposure time and the ratio And a frame rate setting step of setting a certain frame rate.