JP5197064B2 - Video camera - Google Patents

Description

  The present invention relates to a video camera, and more particularly to a video camera that performs focal plane distortion correction processing on image data output from an image sensor that employs a focal plane electronic shutter system.

An example of this type of device is disclosed in Patent Document 1. According to this background art, an image signal output from a CMOS image sensor is given to a focal plane distortion correction circuit. The focal plane distortion correction circuit pays attention to three consecutive frames, and performs linear interpolation processing on two frames that differ depending on pixel positions. As a result, an image signal of one frame in which the focal plane distortion is corrected is generated.
Japanese Patent Laid-Open No. 2006-148496

  However, the background art requires a special circuit as described above to correct the focal plane distortion.

  Therefore, a main object of the present invention is to provide a video camera capable of improving the quality of moving images with a simple circuit configuration.

The video camera according to the present invention (10: reference numeral corresponding to the embodiment; the same applies hereinafter) is an imaging unit (16) that repeatedly outputs an electronic image generated on an imaging surface by a focal plane electronic shutter type exposure operation in a raster scanning manner. ), An extraction means (36) for extracting a partial image belonging to the designated area from the electronic image output from the imaging means, an output means (38) for outputting a moving image based on the partial image extracted by the extraction means, an optical axis Detecting means (22) for detecting the movement of the imaging surface in a direction orthogonal to the position, position changing means (S11) for changing the position of the designated area so as to compensate for the motion detected by the detecting means, and detecting by the detecting means Shape change means (S21 to S29) for creating a function for suppressing the focal plane distortion in the horizontal direction based on the movement and changing the shape of the designated area is provided.
Preferably, the designated area is a rectangular area having a right side and a left side, and the function created by the shape changing unit corresponds to a function that defines the amount of inclination of the right side and the left side.

More preferably, the detection means assigns a plurality of blocks arranged in the vertical direction to the electronic image output from the imaging means (50 to 56), and a plurality of block images belonging to the plurality of blocks assigned by the assignment means includes a motion vector detecting means for detecting a motion vector separately (58-74), the shape changing means function creating means for creating a function number based on the horizontal component of the plurality of motion vectors created by the motion vector detecting means Includes (S27). As a result, the amount of inclination can be varied.

  More preferably, the number of blocks allocated by the allocation unit is determined based on the imaging cycle of the imaging unit and the vibration frequency of the imaging surface.

Preferably, the first size change means for changing a vertical size of the specified area based on the vertical component of the motion detected by the detecting means (S31 ~ S33), and the vertical size of the extracted partial image by extracting means a Second size changing means (S35, 92) for changing in relation to the changing process of the one size changing means is further provided. Thereby, the focal plane distortion in the vertical direction is corrected.

  More preferably, the change magnification of the second size changing means corresponds to the reciprocal of the change magnification of the first size changing means.

An imaging control program according to the present invention includes: an imaging unit (16) that repeatedly outputs an electronic image generated on an imaging surface by an exposure operation of a focal plane electronic shutter method in a raster scanning manner; and a designation among electronic images output from the imaging unit Extraction means (36) for extracting a partial image belonging to the area, output means (38) for outputting a moving image based on the partial image extracted by the extraction means, and detection of movement of the imaging surface in a direction perpendicular to the optical axis The position change step (S11) for changing the position of the designated area so that the motion detected by the detection means is compensated for by the processor (28) of the video camera (10) including the detection means (22), and the detection means A shape change step that changes the shape of the specified area by creating a function that suppresses the focal plane distortion in the horizontal direction based on the detected motion (S The imaging control program for executing (7) is that the designated area is a rectangular area having a right side and a left side, and the function created by the shape changing means corresponds to a function that defines the amount of inclination of the right side and the left side It is characterized by doing.

The imaging control method according to the present invention includes an imaging means (16) for repeatedly outputting an electronic image generated on an imaging surface by an exposure operation of a focal plane electronic shutter system in a raster scanning manner, and specifying a specified one of the electronic images output from the imaging means Extraction means (36) for extracting a partial image belonging to the area, output means (38) for outputting a moving image based on the partial image extracted by the extraction means, and detection of movement of the imaging surface in a direction perpendicular to the optical axis An imaging control method executed by a video camera (10) provided with detection means (22), a position change step (S11) for changing the position of the designated area so that the motion detected by the detection means is compensated, And a function to change the shape of the specified area by creating a function to suppress the focal plane distortion in the horizontal direction based on the motion detected by the detection means A state changing step (S7). The designated area is a rectangular area having a right side and a left side, and the function created by the shape changing means corresponds to a function that defines the amount of inclination of the right side and the left side.

  According to this invention, by changing the position of the designated area so that the movement of the imaging surface in the direction orthogonal to the optical axis is compensated, and by changing the shape of the designated area so that focal plane distortion is suppressed, The shake of the imaging surface and the focal plane distortion are integrally corrected. As a result, the quality of moving images can be improved with a simple circuit configuration.

  The above object, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

  Referring to FIG. 1, a digital video camera 10 of this embodiment includes an optical lens 12 and an aperture unit 14. The optical image of the object scene is irradiated on the imaging surface of the CMOS image sensor 16 through these members. The imaging surface is covered by a primary color Bayer array color filter (not shown). Therefore, in each pixel, a charge having color information of any one of R (Red), G (Green), and B (Blue) is generated by photoelectric conversion.

  When the power is turned on, the CPU 28 activates the driver 18 to execute through image processing. In response to the vertical synchronization signal Vsync generated every 1/60 seconds, the driver 18 exposes the imaging surface by the focal plane electronic shutter method, and reads out the charges generated on the imaging surface in a raster scanning manner. From the image sensor 16, raw image data representing the object scene is output at a frame rate of 60 fps. The preprocessing circuit 20 performs processing such as digital clamping, pixel defect correction, and gain control on the raw image data from the image sensor 16, and the raw image data generated thereby is passed through the memory control circuit 32 to the raw image area 34 a of the SDRAM 34. Write (see FIG. 2).

  An extraction area EX is allocated to the imaging surface in the manner shown in FIG. The post-processing circuit 36 reads a part of the raw image data belonging to the extraction area EX from the raw image data stored in the raw image area 24a through the memory control circuit 32 every 1/60 seconds, and the read raw image The data is subjected to processing such as color separation, white balance adjustment, YUV conversion, and vertical zoom. As a result, display image data corresponding to the YUV format is created every 1/60 seconds. The generated display image data is written into the YUV image area 34b (see FIG. 2) of the SDRAM 34 through the memory control circuit 32.

  The LCD driver 38 repeatedly reads the display image data stored in the YUV image area 34b, and drives the LCD monitor 40 based on the read YUV image data. As a result, a real-time moving image (through image) representing the scene is displayed on the monitor screen.

  The preprocessing circuit 20 executes a simple Y generation process and a simple RGB generation process in addition to the above-described processes. The raw image data is converted into Y data by a simple Y conversion process, and converted into RGB data (data in which each pixel has all color information of R, G, and B) by a simple RGB conversion process. The Y data generated by the simple Y conversion process is supplied to the motion detection circuit 22 and the AF evaluation circuit 24, and the RGB data generated by the simple RGB conversion process is supplied to the AE / AWB evaluation circuit 26.

Referring to FIG. 3, nine motion detection areas MD1 to MD9 are assigned to the imaging surface. The motion detection areas MD1 to MD3 are arranged horizontally in the upper stage of the imaging surface, the motion detection areas MD4 to MD6 are arranged horizontally in the interruption of the imaging surface, and the motion detection areas MD7 to MD9 are arranged horizontally in the lower stage of the imaging surface. . The minimum number of motion detection areas to be allocated in the vertical direction is determined according to Equation 1.
[Equation 1]
MN = TM × SF × α
MN: Minimum number of motion detection areas to be allocated in the vertical direction TM: Imaging period (generation period of the vertical synchronization signal Vsync)
SF: imaging surface vibration frequency α: constant (= 18)

  According to Equation 1, the minimum number of motion detection areas to be assigned in the vertical direction can be obtained by multiplying the multiplication value of the imaging period and the vibration frequency of the imaging surface by a constant α. Here, the vibration frequency of the imaging surface corresponds to the hand vibration frequency (= about 10 Hz) of the operator. Accordingly, when the imaging cycle is “1/60 seconds” as in this embodiment, the minimum number of motion detection areas to be allocated in the vertical direction is “3”. If the imaging cycle is “1/30 second”, the minimum number of motion detection areas to be allocated in the vertical direction is “6”.

  The motion detection circuit 22 detects a partial motion vector representing the motion of the object scene in each of the motion detection areas MD1 to MD9 based on Y data given from the preprocessing circuit 20 every 1/60 seconds. The motion detection circuit 22 also combines the partial motion vectors in the motion detection areas MD1 to MD3 to generate a combined motion vector UVC every 1/60 seconds, and combines and combines the partial motion vectors in the motion detection areas MD4 to MD6. The motion vector MVC is generated every 1/60 seconds, and the combined motion vectors LVC are generated every 1/60 seconds by synthesizing the partial motion vectors of the motion detection areas MD7 to MD9.

  The combined motion vector UVC represents the motion of the object scene in the upper part of the imaging surface, the composite motion vector MVC represents the motion of the object field in the middle part of the imaging surface, and the composite motion vector LVC represents the object field in the lower part of the image capturing surface. Represents the movement.

  The CPU 28 creates an overall motion vector based on the combined motion vectors UVC, MVC, and LVC output from the motion detection circuit 22, and the movement of the imaging surface in the direction orthogonal to the optical axis is either a camera shake or a pan / tilt operation. Whether it is caused or not is discriminated based on the entire motion vector, and the extraction area EX is moved along the entire motion vector when the motion of the imaging surface is caused by camera shake. The position of the extraction area EX is changed so that the movement of the imaging surface due to camera shake is compensated (cancelled). The extraction area EX moves on the imaging surface in the manner shown in FIG. 4 when camera shake occurs on the imaging surface.

  The AF evaluation circuit 24 creates an AF evaluation value every 1/60 seconds based on the Y data given from the preprocessing circuit 20. The CPU 28 performs so-called hill-climbing AF processing based on the created AF evaluation value, and places the optical lens 12 at the focal point.

  The AE / AWB evaluation circuit 24 creates an AE / AWB evaluation value every 1/60 seconds based on the RGB data given from the preprocessing circuit 20. Based on the created AE / AWB evaluation value, the CPU 28 calculates an EV value for obtaining an appropriate exposure amount and a white balance adjustment gain for obtaining an appropriate white balance. Further, the CPU 28 sets the aperture amount and the exposure time that define the calculated EV value in the aperture unit and the driver 18, and sets the calculated white balance adjustment gain in the post-processing circuit 36. As a result, the brightness and white balance of the moving image output from the LCD monitor 40 are adjusted appropriately.

  When the recording start operation is performed by the key input device 30, the CPU 28 activates the I / F 42. The I / F 42 reads the image data stored in the YUV image area 34b every 1/60 seconds, and writes the read image data to the moving image file in the recording medium 44 in a compressed state. The I / F 42 is stopped by the CPU 28 when a recording end operation is performed on the key input device 30. As a result, the image data recording process is completed.

  The motion detection circuit 22 is configured as shown in FIG. The Y data is given to the frame memory 48 and the distributor 50. The frame memory 48 is formed by two banks each having a capacity corresponding to one frame, and the supplied Y data is alternately written into the two banks.

  Distributor 50 provides Y data belonging to motion detection areas MD1, MD4 and MD7 to distributor 52, Y data belonging to motion detection areas MD2, MD5 and MD8 to distributor 54, and motion detection areas MD3, MD6. Y data belonging to MD9 is applied to the distributor 56.

  The distributor 52 gives Y data belonging to the motion detection area MD1 to the partial motion vector detection circuit 58, gives Y data belonging to the motion detection area MD4 to the partial motion vector detection circuit 64, and Y data belonging to the motion detection area MD7. Is supplied to the partial motion vector detection circuit 70. The distributor 54 provides Y data belonging to the motion detection area MD2 to the partial motion vector detection circuit 60, Y data belonging to the motion detection area MD5 to the partial motion vector detection circuit 66, and Y data belonging to the motion detection area MD8. Is given to the partial motion vector detection circuit 72. The distributor 56 provides the Y data belonging to the motion detection area MD3 to the partial motion vector detection circuit 62, the Y data belonging to the motion detection area MD6 to the partial motion vector detection circuit 68, and the Y data belonging to the motion detection area MD9. Is supplied to the partial motion vector detection circuit 74.

  Each of the partial motion vector detection circuits 58 to 74 compares the Y data supplied from the distributor 52, 54 or 56 with the Y data of the previous frame stored in the frame memory 48, and compares the Y data supplied from the distributor 52, 54 or 56 with the target motion detection area. A partial motion vector representing the motion of the scene is detected. As a result, nine partial motion vectors respectively corresponding to the motion detection areas MD1 to MD9 are obtained.

  The combined motion vector generation circuit 76 combines the three partial motion vectors detected by the partial motion vector detection circuits 58, 60 and 62, respectively, and generates a combined motion vector UVC representing the motion of the object scene on the upper stage of the imaging surface. To do. The combined motion vector generation circuit 78 combines the three partial motion vectors detected by the partial motion vector detection circuits 64, 66 and 68, respectively, and generates a combined motion vector MVC representing the motion of the object scene in the middle stage of the imaging surface. To do. The combined motion vector generation circuit 80 combines the three partial motion vectors detected by the partial motion vector detection circuits 70, 72, and 74, respectively, and generates a combined motion vector LVC representing the motion of the object scene on the lower stage of the imaging surface. To do.

  The post-processing circuit 36 is configured as shown in FIG. The controller 82 repeatedly issues a read request to the memory control circuit 32 in order to read Y data belonging to the extraction area EX from the raw image area 34 a of the SDRAM 34. The raw image data read in response to this is given to the color separation circuit 86 via the SRAM 84. The color separation circuit 86 generates RGB data in which each pixel has all the R, G, and B color information based on the given raw image data.

  The generated RGB data is subjected to white balance adjustment processing by the white balance adjustment circuit 88 and then converted to YUV format image data by the YUV conversion circuit 90. The converted image data is written in the SRAM 96 through a vertical zoom process (details will be described later) by the zoom circuit 92. The controller 94 outputs the image data stored in the SRAM 96 to the memory control circuit 32 together with a write request. The output image data is written into the YUV image area 34 b of the SDRAM 34 by the memory control circuit 32.

  As described above, since the image sensor 16 exposes the imaging surface by the focal plane electronic shutter method, the exposure timing varies depending on the horizontal pixel row. Then, horizontal focal plane distortion occurs in the raw image data stored in the SDRAM 34 due to the horizontal movement of the imaging surface (see FIG. 7), and the vertical focal occurs due to the vertical movement of the imaging surface. Plane distortion occurs (see FIG. 10). Therefore, in this embodiment, the shape of the extraction area EX is changed based on the output of the motion detection circuit 22 so that the focus plane distortion is suppressed.

  When the focal plane distortion in the horizontal direction occurs, the inclination amounts of the right side and the left side of the rectangle representing the extraction area EX are changed as shown in FIGS. 8 (A) to 8 (D). That is, when the imaging surface is moved in the right direction, the exposure timing of the imaging surface changes in the manner shown in the left orchid in FIG. 8A. Therefore, the right side and the left side of the extraction area EX are the right orchid in FIG. It is inclined as shown in When the imaging surface moves to the left, the exposure timing of the imaging surface changes as shown in the left orchid in FIG. 8B, so the right side and the left side of the extraction area EX are the right orchid in FIG. 8B. It is inclined as shown in

  Furthermore, when the moving direction of the imaging surface is reversed from right to left, the exposure timing of the imaging surface changes in the manner shown in the left orchid in FIG. 8C, and therefore the right side and the left side of the extraction area EX are shown in FIG. ) Inclined as shown in the right orchid. Furthermore, when the moving direction of the imaging surface is reversed from left to right, the exposure timing of the imaging surface changes in the manner shown in the left orchid in FIG. 8D, so the right side and the left side of the extraction area EX are shown in FIG. D) Inclined as shown in right orchid.

  The amount of inclination is determined in the manner shown in FIG. 9A or 9B based on the combined vectors UVC, MVC, and LVC output from the motion detection circuit 22. First, the horizontal components of the combined motion vectors UVC, MVC, and LVC are specified as “UVCx”, “MVCx”, and “LVCx”. Next, the Y coordinate of the horizontal component UVCx is determined corresponding to the vertical position of the motion detection areas MD1 to MD3, the Y coordinate of the horizontal component MVCx is determined corresponding to the vertical position of the motion detection areas MD4 to MD6, and The Y coordinate of the horizontal component LVCx is determined corresponding to the vertical position of the motion detection areas MD7 to MD9.

  Further, the horizontal component UVCx is set so that the X coordinate of the end of the horizontal component MVCx matches the X coordinate of the tip of the horizontal component UVCx and the X coordinate of the end of the horizontal component LVCx matches the X coordinate of the tip of the horizontal component MVCx. , MVCx and LVCx tip X coordinates are determined. Thereafter, an approximate function representing a straight line or a curve connecting the determined three XY coordinates is calculated.

  Accordingly, when the horizontal components UVCx, MVCx, and LVCx have the size shown in the left orchid of FIG. 9A, three XY coordinates are determined in the manner shown in the central orchid of FIG. The approximate function having the inclination shown in the right orchid is calculated. If the horizontal components UVCx, MVCx, and LVCx have the size shown in the left orchid in FIG. 9B, three XY coordinates are determined in the manner shown in the central orchid in FIG. 9B, and FIG. The approximate function having the inclination shown in the right orchid is calculated.

When the focal plane distortion in the vertical direction occurs, the vertical size of the extraction area EX is enlarged / reduced as shown in FIG. 11A or 11C, and the vertical size of the image data corresponding to the extraction area EX. Is restored by the zoom circuit 92 provided in the post-processing circuit 36 in the manner shown in FIG. 11B or 11D. The change magnification of the vertical size of the extraction area EX is calculated according to Equation 2, and the zoom magnification of the zoom circuit 92 is calculated according to Equation 3.
[Equation 2]
ZM1 = 1 + VM / VPX
ZM1: change rate of vertical size of extraction area VM: number of pixels corresponding to vertical component of entire motion vector VPX: number of vertical pixels on imaging surface [Equation 3]
ZM2 = 1 / ZM1
ZM2: Zoom magnification

  According to Equation 2, a value obtained by adding “1” to the ratio of the number of pixels corresponding to the vertical component of the entire motion vector to the number of vertical pixels on the imaging surface corresponds to the change magnification of the vertical size of the extraction area. According to Equation 3, the zoom magnification of the zoom circuit 92 corresponds to the inverse of the change magnification of the vertical size of the extraction area.

  The CPU 28 processes a plurality of tasks including the camera shake correction task shown in FIGS. 12 to 13 in parallel. Note that control programs corresponding to these tasks are stored in the flash memory 46.

  Referring to FIG. 12, in step S1, it is determined whether or not the vertical synchronization signal Vsync is generated. If YES, the combined motion vectors UVC, MVC, and LVC are fetched from the motion detection circuit 22 in step S3. In step S5, an overall motion vector is created based on the fetched synthesized motion vectors UVC, MVC and LVC. In step S7, an area shape change process is executed, and in subsequent step S9, it is determined based on the entire motion vector whether or not the current movement of the imaging surface is caused by the pan / tilt operation. If “YES” here, the process directly returns to the step S1, and if “NO”, the extraction area EX is moved along the entire motion vector in a step S11, and then the process returns to the step S1.

  The area shape changing process in step S7 is executed according to a subroutine shown in FIG. First, in step S21, the horizontal components of the combined motion vectors UVC, MVC, and LVC are specified as “UVCx”, “MVCx”, and “LVCx”. In step S23, the Y coordinate of the horizontal component UVCx is determined corresponding to the vertical position of the motion detection areas MD1 to MD3, the Y coordinate of the horizontal component MVCx is determined corresponding to the vertical position of the motion detection areas MD4 to MD6, Then, the Y coordinate of the horizontal component LVCx is determined corresponding to the vertical position of the motion detection areas MD7 to MD9.

  In step S25, the horizontal coordinate MVCx is adjusted so that the X coordinate of the end of the horizontal component UVCx matches the X coordinate of the tip of the horizontal component UVCx, and the X coordinate of the end of the horizontal component LVCx matches the X coordinate of the tip of the horizontal component MVCx. Determine the X-coordinates of the tips of the components UVCx, MVCx and LVCx. In step S27, an approximate function representing a straight line or a curve connecting the determined three XY coordinates is calculated. In step S29, the inclination amounts of the right side and the left side of the extraction area EX are determined in accordance with the calculated approximate function.

  In step S31, the vertical component of the entire motion vector is specified. In step S33, the change magnification of the vertical size of the extraction area EX is calculated according to Equation 2, and in Step S35, the zoom magnification of the zoom circuit 92 is calculated according to Equation 3. When the process of step S35 is completed, the process returns to the upper-level routine.

  As can be understood from the above description, the image sensor 16 repeatedly outputs the object scene image generated on the imaging surface by the focal plane electronic shutter type exposure operation in a raster scanning manner. The post-processing circuit 36 extracts a partial scene image belonging to the extraction area EX from the scene image output from the image sensor 16. A moving image based on the extracted partial scene image is displayed on the LCD monitor 40 by the LCD driver 38. The motion detection circuit 22 detects the motion of the imaging surface in a direction orthogonal to the optical axis. The position of the extraction area is changed by the CPU 28 so that the motion detected by the motion detection circuit 22 is compensated (S11). The CPU 28 also changes the shape of the extraction area EX based on the motion detected by the motion detection circuit 22 so that the focal plane distortion is suppressed (S7).

  By changing the position of the extraction area EX so that the movement of the imaging surface in the direction orthogonal to the optical axis is compensated, and changing the shape of the extraction area EX so that focal plane distortion is suppressed, the fluctuation of the imaging surface And the focal plane distortion is corrected integrally. As a result, the quality of moving images can be improved with a simple circuit configuration.

  In this embodiment, the extraction area EX is moved along the entire motion vector, but in addition, the evaluation area referred to by the AE / AWB evaluation circuit 26 follows the extraction area EX. You may make it move to.

It is a block diagram which shows the structure of one Example of this invention. It is an illustration figure which shows an example of the mapping state of SDRAM applied to FIG. 1 Example. It is an illustration figure which shows an example of the allocation state of the extraction area and motion detection area in an imaging surface. FIG. 8 is an illustrative view showing one example of a camera shake correction operation in the embodiment in FIG. 1; It is a block diagram which shows an example of a structure of the motion detection circuit applied to the FIG. 1 Example. It is a block diagram which shows an example of a structure of the post-processing circuit applied to FIG. 1 Example. It is an illustration figure which shows an example of the imaging operation in FIG. 1 Example. (A) is an illustration figure which shows an example of the shape change process of an extraction area, (B) is an illustration figure which shows another example of the shape change process of an extraction area, (C) is a shape change process of an extraction area FIG. 8D is an illustrative view showing yet another example of the extraction area shape changing process. (A) is an illustration figure which shows an example of the operation | movement which determines the inclination amount of the left side and right side of an extraction area, (B) is the illustration which shows another example of the operation | movement which determines the inclination amount of the left side and right side of an extraction area. FIG. It is an illustration figure which shows another example of the imaging operation in FIG. 1 Example. (A) is an illustrative view showing an example of an object scene image input to the post-processing circuit, (B) is an illustrative view showing an example of an object scene image output from the post-processing circuit, and (C ) Is an illustrative view showing another example of the object scene image inputted to the post-processing circuit, and (D) is an illustrative view showing another example of the object scene image outputted from the post-processing circuit. It is a flowchart which shows a part of operation | movement of CPU applied to the FIG. 1 Example. It is a flowchart which shows a part of other operation | movement of CPU applied to the FIG. 1 Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Digital video camera 16 ... Image sensor 20 ... Pre-processing circuit 22 ... Motion detection circuit 28 ... CPU
32 ... Memory control circuit 34 ... SDRAM
36 ... Post-processing circuit 38 ... LCD driver

Claims (7)

Imaging means for repeatedly outputting an electronic image generated on an imaging surface by an exposure operation of a focal plane electronic shutter system in a raster scanning manner;
Extraction means for extracting a partial image belonging to the designated area from the electronic image output from the imaging means;
Output means for outputting a moving image based on the partial image extracted by the extracting means;
Detecting means for detecting movement of the imaging surface in a direction perpendicular to the optical axis;
A position changing means for changing the position of the designated area so that the motion detected by the detecting means is compensated, and a function for suppressing the focal plane distortion in the horizontal direction based on the motion detected by the detecting means And a shape changing means for changing the shape of the designated area,
The designated area is a rectangular area having a right side and a left side,
The video camera according to claim 1, wherein the function created by the shape changing means corresponds to a function that defines an inclination amount of the right side and the left side . The detecting means individually assigns a plurality of blocks arranged in the vertical direction to the electronic image output from the imaging means, and individually assigns motion vectors of a plurality of block images belonging to the plurality of blocks assigned by the assigning means. Motion vector detection means for detecting,
The video camera according to claim 1, wherein the shape changing unit includes a function creating unit that creates the function based on horizontal components of a plurality of motion vectors created by the motion vector detecting unit. The video camera according to claim 2, wherein the number of blocks allocated by the allocation unit is determined based on an imaging cycle of the imaging unit and a vibration frequency of the imaging surface. First size changing means for changing a vertical size of the designated area based on a vertical component of movement detected by the detecting means; and
4. The video camera according to claim 1, further comprising a second size changing unit that changes a vertical size of the partial image extracted by the extracting unit in association with a change process of the first size changing unit. 5. . 5. The video camera according to claim 4, wherein the change magnification of the second size changing means corresponds to the reciprocal of the change magnification of the first size changing means. Imaging means for repeatedly outputting an electronic image generated on an imaging surface by an exposure operation of a focal plane electronic shutter method in a raster scanning manner, and extracting means for extracting a partial image belonging to a specified area from the electronic image output from the imaging means A video camera processor comprising: output means for outputting a moving image based on the partial image extracted by the extraction means; and detection means for detecting movement of the imaging surface in a direction orthogonal to the optical axis.
A position changing step for changing the position of the designated area so that the motion detected by the detecting means is compensated; and
An imaging control program for executing a shape change step for changing a shape of the designated area by creating a function for suppressing a focal plane distortion in a horizontal direction based on a motion detected by the detection means,
The designated area is a rectangular area having a right side and a left side,
The imaging control program, wherein the function created by the shape changing means corresponds to a function that defines an inclination amount of the right side and the left side. Imaging means for repeatedly outputting an electronic image generated on an imaging surface by an exposure operation of a focal plane electronic shutter method in a raster scanning manner, and extracting means for extracting a partial image belonging to a specified area from the electronic image output from the imaging means An imaging control method executed by a video camera comprising: output means for outputting a moving image based on the partial image extracted by the extraction means; and detection means for detecting movement of the imaging surface in a direction orthogonal to the optical axis. There,
A position changing step for changing the position of the designated area so that the motion detected by the detecting means is compensated; and
A shape changing step for changing the shape of the designated area by creating a function for suppressing the focal plane distortion in the horizontal direction based on the motion detected by the detecting means,
The designated area is a rectangular area having a right side and a left side,
The imaging control method, wherein the function created by the shape changing means corresponds to a function that defines an inclination amount of the right side and the left side.

Images