JP2005311674A - VIDEO RECORDING / DISPLAY DEVICE AND VIDEO RECORDING / DISPLAY METHOD - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shoot a subject video without shaking by issuing shaking information indicating shaking of the subject video due to camera shake to a user.
A video recording and display device according to the present invention includes a subject video acquisition unit 101 that acquires a subject video, and a shake information generation unit that generates shaking information indicating a shake of the subject video captured by the subject video acquisition unit 101. 102 and display means 103 for displaying the shake information from the shake information generating means 102. With this video recording and display device, it is possible to shoot a subject video by confirming that the support state is free from shaking while viewing the shaking information displayed on the display means 102.
[Selection] Figure 1

Description

  The present invention relates to a video recording / displaying device and a video recording / displaying method such as a mobile phone equipped with a camera, a digital still camera, or a video camera, and a video recording / displaying device and video recording capable of capturing a subject video without shaking. It relates to the display method.

  Some conventional video recording and display devices such as a mobile phone equipped with a camera, a digital still camera, or a video camera have a function of automatically correcting shaking generated in a subject video due to camera shake (for example, a patent) Reference 1). However, even if it automatically corrects the shaking, there are many cases where the shaking cannot be completely suppressed. In the case of automatically correcting shaking, even if shaking due to shaking or the like occurs, the user is not aware of shaking as a user's feeling. For this reason, even if the user intends to hold the video recording and display device so as not to cause camera shake, the actual video may be shaken by camera shake. Accordingly, there has been a problem that when the camera shake occurs beyond the range that can be automatically corrected, it is no longer possible to suppress the shake generated in the subject image.

  Some video recording and display devices have a function of generating a composite video from a subject video. However, when the subject video is shaken due to camera shake or the like, there is a problem that the quality of the synthesized video is deteriorated.

Further, as a composite video, a strobe video synthesized by cutting out moving objects from the captured video and pasting them together may be used (for example, see Non-Patent Document 1). In this case, when the subject video fluctuates, there is a problem in that the moving object that is the target of the strobe synthesis cannot be accurately extracted from the subject video, and the synthesized video is significantly deteriorated.
JP-A-4-157987 (page 3) Takashi Ida and three others: “Development of a fully automatic FlashMotion system that synthesizes the trajectory of a motion form”, Proceedings of the 9th Image Sensing Symposium, June 2003, pp. 495-500

  The present invention has been made in order to solve the above-described problems of the prior art, and by generating shaking information for prompting the user to suppress shaking of the subject video due to camera shake or the like, there is no subject video. It is an object of the present invention to provide a video recording / displaying apparatus and a video recording / displaying method that enable shooting of a video.

  It is another object of the present invention to provide a video recording and display apparatus and a video recording and display method that can generate a high-quality composite video by processing a subject video without shaking to generate a composite video. .

  It is another object of the present invention to provide a video recording and display device and a video recording and display method that enable generation of a high-quality strobe video by processing a subject video without shaking and synthesizing the strobe video. .

  In order to achieve the above object, a video recording / displaying apparatus according to the present invention includes a subject video acquisition unit that acquires a subject video, and a shake that generates shaking information indicating the shake of the subject video captured by the subject video acquisition unit. It is characterized by comprising information generating means and display means for displaying the shaking information from the shaking information generating means.

  The video recording and display device of the present invention includes a subject video acquisition unit that acquires a subject video, a shaking information generation unit that generates shaking information indicating a shaking of the subject video captured by the subject video acquisition unit, and the subject Video synthesizing means for processing a video to generate a synthesized video, and at least one display means for displaying the shaking information generated by the shaking information generating means or the synthesized video generated by the video synthesizing means. It is characterized by that.

  The video recording / displaying method of the present invention includes a step of displaying the subject video acquired by the subject video acquisition unit on the display unit, generating shaking information indicating the shaking of the subject video, and displaying the shaking information on the display unit. And a step of processing the subject video to generate a composite video and displaying the composite video on the display means.

  According to the present invention, it is possible to prompt the user to suppress the shaking of the subject video by displaying the shaking information, and thus it is possible to acquire a subject video without shaking. In addition, it is possible to shoot the subject video without shaking by issuing shaking information indicating the shaking of the subject video due to camera shake, etc., and to generate high quality video by using the subject video without shaking. A composite video can be generated.

  Hereinafter, embodiments of the present invention will be described.

  FIG. 1 is a diagram showing a first embodiment of the present invention.

  The video recording / display apparatus according to the first embodiment includes subject video acquisition means 101, shaking information generation means 102, and display means 103.

  The subject video acquisition unit 101 is a camera having a function of taking a subject video into a video recording display device. The shake information generating unit 102 has a function of generating shake information for displaying the shake of the subject video captured by the subject video acquiring unit 101 to the user. The display unit 103 has a function of displaying the shake information generated by the shake information generation unit 102 to the user.

  Next, the operation of the video recording / displaying apparatus according to the first embodiment will be described.

  The subject video acquisition unit 101 captures the subject video and sends it to the shake information generation unit 102. The shaking information generation unit 102 detects shaking generated in the subject video from the subject video acquisition unit 101 and generates shaking information to be displayed to the user.

  As a method for detecting the shaking generated in the subject video, the subject video acquisition unit is provided with an angular velocity sensor capable of detecting a change in the vibration direction when an angular velocity is applied to the vibrating body. There is a method of detecting the angular velocity of the 101 swing. In this case, the value of the magnitude of the angular velocity itself may be used as the shake information as it is, or when the magnitude of the angular velocity is compared with a predetermined threshold, if it is equal to or greater than the threshold, “1”, that is, the subject video is shaken, If it is less than the threshold value, “0”, that is, the subject image is not shaken, and the presence / absence of the shake is binarized may be used as the shake information.

  In addition, a processed image may be generated by obtaining an average value of pixel values for each pixel with respect to a frame of a subject image whose time varies, and the processed image may be used as shaking information. Here, an example in which a processed image is generated by this method is shown in FIGS. FIG. 4A shows two frames of the subject video whose time is around when the subject video is not shaken. In this case, the processed image is the same as the subject image as shown in FIG. On the other hand, FIG. 5A is a frame of two subject images where the time when the subject image is shaken varies. In this case, as shown in FIG. 5B, the contour of the object included in the subject image appears double in the processed image. Therefore, when the processed video generated by this method is presented to the user, the user can easily grasp that the subject video is shaking.

  Further, the subject video itself may be displayed side by side with the processed video generated by the above method. By displaying the subject videos themselves side by side, the user can compare the processed video with the subject video, so that it is easy to detect a state in which the contours of the objects included in the subject video are doubled.

  In addition, the absolute value of the difference in pixel value between frames is calculated for each pixel of the frame of the subject video whose time fluctuates, and a monochrome image in which the larger the absolute value is expressed brighter is generated. It is good. According to this method, when there is no shaking in the subject image, the difference in pixel value for each pixel is 0, so that the processed image is a black screen. On the other hand, when the subject image is shaken, the absolute value of the difference between the pixel values is not necessarily 0, so that the processed image is not black. Therefore, when the processed video generated by this method is presented to the user, the user can easily grasp that the subject video is shaking.

  The display means 103 displays the shake information generated by the shake information generation means 102 to the user. When the method of detecting the shaking generated in the subject video is the method using the angular velocity sensor described above, the magnitude of the angular velocity may be displayed numerically on a display for displaying the video. Further, the numerical value may be processed into a meter as shown in FIG. 6 and displayed on the display. Further, an LED whose brightness changes according to the magnitude of the angular velocity may be provided, and the shaking information may be displayed by turning on the LED. Further, when the shake information is a binary value indicating whether or not the subject video is shaken, the LED may be turned on / off in accordance with each value. Furthermore, when the shake information is the above-described processed image, the processed image may be displayed on a display for displaying the subject image.

  The user can support the subject video acquisition unit 101 in accordance with the shaking information displayed on the display unit 103 in this way so that the subject video does not shake. For example, when the magnitude of the angular velocity described above is represented by a numerical value on a display, a subject image without shaking can be obtained by shooting with support of the subject video acquisition unit 101 so that the numerical value approaches zero. In addition, when the presence / absence of the subject video is displayed by turning on / off the LED, if the subject video acquisition unit 101 is supported so that the LED is turned off, the subject video can be obtained similarly. Can do.

  In addition, when an average value of pixel values is obtained for each pixel with respect to a frame of a subject video whose time fluctuates, a processed video is generated, and when this processed video is displayed on a display, if the subject video is shaken, Since the contour of the object included in the subject video looks double, if the subject video acquisition unit 101 is supported so that the contour of the object is not doubled, the subject video without shaking is obtained similarly. be able to.

    In addition, the absolute value of the difference between the pixel values for each pixel is obtained for each frame of the subject video frame, and a monochrome image is generated in which the larger the absolute value is, the brighter the pixel is displayed. When the subject image is shaken, if the subject image is shaken, the displayed processed image will not be black, so the subject image acquisition unit 101 is supported so that the displayed image approaches black. If a picture is taken, a subject image without shaking can be obtained similarly.

  The subject video imaged in this way may be recorded as a moving image, may be recorded as a single still image, or may be recorded as a plurality of still images that are temporally continuous.

  As described above, according to the video recording and display apparatus according to the first embodiment, the user can support the user without shaking according to the shaking information by issuing the shaking information indicating the shaking of the subject image due to camera shake or the like to the user. It is possible to shoot the subject video while confirming the state.

  FIG. 2 is a diagram showing a second embodiment of the present invention.

  The video recording / display apparatus of the second embodiment includes subject video acquisition means 201, shaking information generation means 202, shaking information display means 203, video composition means 204, and composite video display means 205.

  The subject video acquisition unit 201 is a camera having a function of taking a subject video into a video recording / displaying device. The shake information generation unit 202 has a function of generating shake information for displaying the shake of the subject video captured by the subject video acquisition unit 201 to the user. The shake information display unit 203 has a function of displaying the shake information generated by the shake information generation unit 202 to the user. The video composition unit 204 has a function of generating a composite video from the subject video captured by the subject video acquisition unit 201. The synthesized video display unit 205 has a function of displaying the synthesized video generated by the video synthesis unit 204.

  Next, the operation of the video recording / displaying apparatus according to the second embodiment will be described. In addition, below, description is abbreviate | omitted about the part (201-203) which is common in 1st Embodiment.

  The video composition unit 204 generates a composite video from the subject video captured by the subject video acquisition unit 201. In the synthesized video generated by the video synthesizing unit 204, for example, an area where the pixel value changes in two or more frames having different time periods of the subject video is cut out, and images in the area are overlaid one by one in time order. It is a strobe image obtained by this. In addition, the synthesized video is a background image on which a person is not shown in advance, and the background image is compared with the subject video, and a portion with a large pixel value difference is cut out as a person and pasted on another image. It may be a video (for example, Takashi Ida and two others: “Face Chat System”, Toshiba Review, June 2002, pp. 26-29).

  The synthesized video display unit 205 displays the synthesized video generated by the video synthesis unit 204 to the user. The composite video display means 205 can be a display for displaying video. In FIG. 2, the shake information display means 203 and the composite video display means 205 are provided separately, but it is also possible to display the shake information and the composite video on one display.

  Next, means for synthesizing a strobe image from a subject image will be described in detail with reference to FIG. Here, as an example of a method for synthesizing a strobe video from a subject video, an inter-frame difference AND method (see, for example, Non-Patent Document 1) is used.

  In the inter-frame difference AND method, first, a pixel value for each pixel between a frame (current frame) in which a moving object is to be cut out and a past frame (past frame) for a predetermined time with respect to the frame. Find the difference between Next, the obtained pixel value difference is compared with a predetermined threshold value to generate an image (alpha mask) in which a pixel having a pixel value difference larger than the threshold value is 1 and a pixel equal to or smaller than the threshold value is 0. Similarly, an alpha mask is generated by obtaining a pixel value difference for each pixel between the current frame and a future frame (future frame) for a predetermined time with respect to the current frame. Next, the object region in the current frame is detected by obtaining a logical product of pixel values for each pixel for the two obtained alpha masks. By overwriting the pixels of the object area on the background image, both the images before and after the movement of the moving object in one image can be displayed simultaneously. The composite image is a strobe image.

  Next, with reference to FIG. 8 to FIG. 11, problems that occur when a strobe image is synthesized using a subject image in which shaking has occurred will be described.

  Each of the three images shown in FIGS. 8 and 9 represents an image of a car passing in front of a background such as a house or a tree. FIG. 8 is an image when the subject image is not shaken, and FIG. 9 is an image when the subject image is shifted upward with time (that is, when the camera is shifted downward). In any case, it is assumed that three images have elapsed from left to right.

  FIG. 10 shows a stroboscopic image when the subject image is not shaken. As described above, in the stroboscopic image, only the pixels of the moving object region are overlaid, so that only a plurality of images of the automobile that is the moving object appear in the stroboscopic image.

  On the other hand, FIG. 11 shows a stroboscopic image when the subject image is shaken. In this case, since the entire image is shifted upward, the difference in pixel value between frames becomes large even for pixels corresponding to still houses and trees, which are actually cut out as moving object regions. Become. Therefore, when the stroboscopic image is synthesized, a plurality of objects that are actually stationary, such as a house and a tree, will appear in the stroboscopic image in addition to the automobile that is a moving object.

  In this way, when the subject video is shaking, the strobe compositing will cause multiple objects that are actually stationary to appear in the strobe video, resulting in a deterioration in the quality of the composite video. Become.

  On the other hand, according to the video recording and display apparatus according to the present embodiment, the user supports the subject video acquisition unit 201 so that the subject video does not shake according to the shake information displayed on the shake information display unit 203. If you shoot, you can get a subject image without shaking. Therefore, it is possible to prevent deterioration of the quality of the composite video by generating the composite video using the subject video acquired in this way.

  As described above, according to the video recording and display apparatus according to the present embodiment, shooting is performed while confirming that the subject video is not shaken by issuing shaking information indicating shaking of the subject video due to camera shake to the user. Therefore, it is possible to generate a high-quality composite video by generating a composite video using a subject video without shaking.

  FIG. 3 is a diagram showing a third embodiment of the present invention.

  The video recording and display apparatus according to the third embodiment includes a subject video acquisition unit 301, a shake information generation unit 302, a video synthesis unit 303, a display video switching unit 304, a video display unit 305, and an operation for instructing switching of the display video. Means 306 are provided.

  The subject video acquisition unit 301 is a camera having a function of taking a subject video into a video recording / displaying device. The shake information generating unit 302 has a function of generating shake information for displaying the shake of the subject video captured by the subject video acquisition unit 301 to the user. The video composition unit 303 has a function of generating a composite video from the subject video photographed by the subject video acquisition unit 301.

  The display video switching unit 304 selects either the subject video from the subject video acquisition unit 301, the shaking information from the shaking information generation unit 302, or the synthesized video from the video synthesizing unit 303, and displays the video as a display video. It has a display switching function to output to. The video display unit 305 has a function of displaying the display video selected by the display video switching unit 304. The operation means 306 for instructing display video switching has a function of instructing the display video switching means 304 to switch display video.

  Next, the operation of the video recording / display apparatus according to the third embodiment will be described.

  The subject video acquisition unit 301 acquires the subject video and sends it to the display video switching unit 304, the shake information generation unit 302, and the video synthesis unit 303. The shake information generation unit 302 generates shake information of the subject video imaged by the subject video acquisition unit 301 and sends it to the display video switching unit 304. The video composition unit 303 also generates a composite video from the subject video captured by the subject video acquisition unit 301 and sends it to the display video switching unit 304.

  The display video switching unit 304 selects either the subject video, the shaking information, or the composite video as a display video based on the switching instruction signal from the operation unit 306, and the selected display video is displayed in the video display unit 305. send. The video display unit 305 displays the display video selected and output by the display video switching unit 304. Here, when the subject video from the subject video acquisition unit 301 is selected as the display video, the display video switching unit 304 is switched to select the shake information from the shake information generation unit 302 next. In addition, when shake information is selected as the display video, switching is performed so as to select the synthesized video from the video synthesizing means 303 next.

  In this way, the user can first confirm the subject video from the subject video acquisition unit 301 displayed on the video display unit 305 as a preview, and set the target video to be shot while viewing the subject video. The subject video acquisition means 301 can be directed.

  Next, by switching the display video and displaying the shake information from the shake information generating unit 302 on the video display unit 305, the user can check whether the subject video is shaken due to camera shake or the like, When shaking occurs, the subject video acquisition unit 301 is supported while checking the screen of the video display unit 305 so that the shaking does not occur. Next, the display video is switched in a state where there is no camera shake, and the synthesized video from the video synthesizing unit 303 is displayed on the video displaying unit 305, so that the user can synthesize the high-quality synthesized video using the subject video that does not shake. A composite image can be obtained.

  This display video switching timing is performed by operating the operating means 306 for instructing display video switching. That is, when the operation unit 306 is operated while the subject image is displayed, the display image is switched to the shaking information. In this case, the shake information generating unit 302 generates shake information of the subject image being photographed at that time and immediately displays it on the video display unit 305. Note that the shaking information generating unit 302 may always generate shaking information regardless of the display video selected by the display video switching unit 304, or the operating unit 306 when the operating unit 306 is operated. A signal may be received from, and generation of shaking information may be started.

  Next, when the operation means 306 is operated, the display image is switched to the composite image. The first subject video frame for video synthesis by the video synthesis unit 303 is the frame displayed at the time of this operation, and the last frame is the frame after a certain time has elapsed from the first frame. As soon as video synthesis from the first frame to the last frame is completed, the synthesized video is displayed on the video display means 305. Note that the final frame for video composition may be determined by operating another button.

  Here, a message indicating that video synthesis is in progress may be displayed from when the display video is switched to the composite video until the video synthesis is completed and the composite video is displayed. The progress status of may be displayed.

  In addition, the video composition can be performed using the subject video image used to generate the shaking information. In this case, if a processed image generated by averaging two or more frames having different time periods of the subject video is used as shaking information, the moving object included in the subject video is duplicated in the processed video. Although it can be seen, it is only necessary to support the subject video acquisition unit 301 so that portions other than the moving object do not double. As a result, it is possible to obtain a subject video without shaking, and if a synthesized video is generated using this subject video, a high-quality synthesized video can be obtained.

  In addition, the operation means 306 for instructing switching of the display image can be a button that is depressed when pressure is applied and returns to the original position when released. A flowchart of the operation in this case is shown in FIG.

  First, in step S 101, the subject video is selected as the display video in the display video switching unit 304, and the subject video from the subject video acquisition unit 301 is displayed on the video display unit 305. While viewing this subject video as a preview, the user can point the subject video acquisition means 301 toward the subject to be photographed.

  In step S102, the state of the button of the operation unit 306 is confirmed. When the button is not depressed, the process returns to step S101, and when the button is depressed, the process proceeds to step S103.

  In step S103, the display video switching means 304 is in a state where the shake information is selected as the display video, and the shake information generation means 302 detects the shake of the subject video and generates the shake information. The generated shaking information is displayed on the video display means 305 in step S104. While viewing this shaking information, the user can confirm whether or not the subject video is shaking due to camera shake or the like.

  Next, in step S105, the state of the button of the operation means 306 is confirmed. When the button is not depressed, the process proceeds to step S106, and when the button is depressed, the process returns to step S103.

  In step S106, the display video switching unit 304 enters a state in which the composite video is selected as the display video, and the video image synthesizing unit 303 processes the subject video to generate a composite video. The generated composite video is displayed on the video display means 305 in step S107.

  According to the operation as described above, from the display of the subject video to the display of the composite video can be performed by pressing and releasing the button once. If the number of times the button is operated can be reduced, it is possible to reduce the chance that the subject image is shaken by pressing and releasing the button, so that deterioration of the quality of the composite image can be prevented.

  According to the present embodiment, it is possible to prompt the user to suppress the shaking of the subject video by presenting the shaking information to the user. However, when the user is supporting the camera or the like with his / her arm, there are many cases where the shaking of the subject image cannot be completely suppressed. Therefore, it is possible to further provide a step of automatically correcting the shake of the subject video before the video composition is started after the shake information is displayed. A flowchart of the operation in this case is shown in FIG.

  First, in step S201, the subject video is selected as the display video in the display video switching means 304, and the subject video from the subject video acquisition means 301 is displayed on the video display means 305. While viewing this subject video as a preview, the user can point the subject video acquisition means 301 toward the subject to be photographed.

  In step S202, the shaking information generating unit 302 detects shaking of the subject video and generates shaking information. The generated shaking information is displayed on the video display means 305 in step S203. While viewing this shaking information, the user can confirm whether or not the subject video is shaking due to camera shake or the like.

  In step S204, the movement of the entire frame of the subject image is detected, and the shake of the subject image is automatically corrected.

  For example, the motion of the entire screen can be detected by dividing the screen into several blocks and detecting a motion vector for each block by block matching or the like. According to this method, it is possible to determine that the screen is moving in the direction of the most frequent motion vector for each block, so the motion of the subject image is corrected by moving the entire screen in the opposite direction to that motion. Video can be generated.

  In the above-described method, it is necessary to accurately obtain the motion vector for each block in order to accurately detect the moving direction of the screen. However, if a moving object is included in the block, the block is also affected by the moving object in addition to the shaking of the subject image, and the motion vector cannot be obtained accurately. Therefore, in the method using block matching, it is desirable to make the moving object appear small in the subject video in order to reduce the block including the moving object regardless of the shake of the subject video. Therefore, as shown in FIG. 14, when a subject video is displayed on the video display means 305, a frame of a certain size may be displayed on the subject video. If the user shoots the subject video so that the moving object is included in this frame, the proportion of the moving object in the subject video screen is kept below a certain level. The number of blocks to be included can be reduced, and the moving direction of the screen can be accurately detected.

  In order to urge the user to shoot so that the moving object appears small in the subject video, a method of not displaying the outer periphery of a certain width of the subject video on the video display means 305 as shown in FIG. 15 or FIG. A method of enlarging and displaying the subject image at a certain magnification may be used. In this way, it is possible to prompt the user to shoot so that the moving object is included in the naturally displayed subject image. On the other hand, an image of the entire subject video may be used for detection of the moving direction of the subject video screen and generation of the composite video regardless of whether or not it is displayed.

  When the automatic correction of the subject video is completed in step S204, the process proceeds to step S205. In step S205, a composite video is generated from the subject video by the video synthesis unit 303. The generated composite video is displayed on the video display means 305 in step S206.

  According to the operation as described above, when the user acquires the subject video according to the shake information, even if the subject video has a slight shake, the shake can be corrected by automatic correction. If a video composition is generated using the subject video, a higher quality composite video can be generated.

  In this way, according to the video recording and display apparatus according to the present embodiment, it is possible to shoot a subject video without shaking by emitting shaking information indicating shaking of the subject video due to camera shake to the user. By generating a composite video using a non-subject video, it is possible to generate a high-quality composite video.

1 is a block diagram showing a configuration of a video recording / display apparatus according to a first embodiment of the present invention. The block diagram which shows the structure of the video recording display apparatus concerning the 2nd Embodiment of this invention. The block diagram which shows the structure of the video recording display apparatus concerning the 3rd Embodiment of this invention. The figure which shows the shake information (processed image) when there is no shake in the subject image. The figure which shows the shake information (processed image) when there is a shake in the subject image. The example of a display of the shake information of 1st and 2nd embodiment. The figure which shows the method of cutting out the moving object contained in a to-be-photographed image. The figure which shows an image | video when there is no shaking in a to-be-photographed image. The figure which shows an image | video when there exists a shake in a to-be-photographed image | video. An example of a composite image after strobe composition when the subject image is not shaken. An example of a composite image after strobe composition when the subject image is shaken. The flowchart which shows one operation example of the 3rd Embodiment of this invention. 6 is a flowchart showing an operation of an embodiment for automatically correcting shaking of a subject image. An example of a subject image display. An example of a subject image display. An example of a subject image display.

Explanation of symbols

101, 201, 301 ... subject video acquisition means 102, 202, 302 ... shaking information generation means 103 ... display means 203 ... shaking information display means 204, 303 ... video composition means 205 ... Composite video display means 304 ... display video switching means 305 ... video display means 306 ... operation means

Claims (13)

Subject image acquisition means for acquiring a subject image;
Shaking information generating means for generating shaking information indicating shaking of the subject video imaged by the subject video obtaining means;
A video recording / display apparatus comprising: display means for displaying the shaking information from the shaking information generating means. Subject image acquisition means for acquiring a subject image;
Shaking information generating means for generating shaking information indicating shaking of the subject video imaged by the subject video obtaining means;
Image synthesizing means for processing the subject image and generating a synthesized image;
A video recording / display apparatus comprising: at least one display unit configured to display the shaking information generated by the shaking information generation unit or the synthesized video generated by the video synthesis unit.   The display means includes first display means for displaying the shake information generated by the shake information generation means, and second display means for displaying the synthesized video generated by the video synthesis means. The video recording / displaying apparatus according to claim 2, wherein Subject image acquisition means for acquiring a subject image;
Shaking information generating means for generating shaking information indicating shaking of the subject video imaged by the subject video obtaining means;
Image synthesizing means for processing the subject image and generating a synthesized image;
Display video switching means for selecting either the subject video or the shaking information or the composite video as a display video;
A video recording / display apparatus comprising: video display means for displaying the display video selected and output from the display video switching means; and operating means for instructing the display video switching means to switch.   5. The display image switching unit according to claim 4, wherein when the subject image is selected, the display image is switched to the shake information next, and when the shake information is selected, the display image is switched to the synthesized image next. Video recording and display device.   The operation means is a button that is depressed when pressure is applied and returns to its original position when released, and when the button is depressed while the subject image is selected, the display of the image display means is displayed as the shaking information. 5. The video recording and display device according to claim 4, wherein when the button is switched and the button returns to the original position, the display of the video display means is switched to the synthesized video.   The composite video is a strobe video obtained by cutting out an area where the pixel value changes in two or more frames having different time periods of the subject video, and superimposing the images in the area one by one in time order. The video recording / displaying device according to claim 2, wherein   The video recording / displaying device according to claim 1, wherein the shaking information is a video.   9. The video recording / displaying apparatus according to claim 8, wherein the shake information is a processed video generated by averaging two or more frames having different times of the subject video. Displaying the subject video acquired by the subject video acquisition means on the display means;
Generating shaking information indicating shaking of the subject image, and displaying the shaking information on the display means;
Processing the subject video to generate a composite video, and displaying the composite video on the display means. Displaying the subject video acquired by the subject video acquisition means on the display means;
When the button of the operation means is pressed while the subject video is displayed, generating swing information indicating the shake of the subject video, and displaying the swing information on the display means;
And a step of displaying a composite image generated by processing the subject image on the display means when the button of the operation means returns to the original state when the shaking information is displayed. Record display method.   The video recording / displaying method according to claim 10 or 11, wherein the shake information is a processed video generated by averaging two or more frames having different time periods of the subject video.   The composite video is a strobe video obtained by cutting out an area where the pixel value changes in two or more frames having different time periods of the subject video, and superimposing the images in the area one by one in time order. The video recording / displaying method according to claim 10 or 11, wherein:

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