JP2011135252A - Stereoscopic video photographing camera adjustment assisting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform more objective and correct camera adjustment by a simple adjustment work without being affected by the ability of an adjuster, a change in a photographing environment and an electric characteristic of equipment. <P>SOLUTION: Frame memories 14L, 14R read a left eye video signal and a right eye video signal being moving image signals in synchronization with each other, based on reading control signals from delay units 16L, 16R. A frame mixer 20 alternately changes over the left eye video signal and the right eye video signal which are read from the frame memories 14L, 14R within one horizontal scanning period, performs synthesis of OSD signal indicating a division point upon changeover, and outputs the signal. The position of the division point is set by a signal from a position counter 19. The video signal output from the frame mixer 20 is supplied to a monitor 2. Consequently, the left half image part of a left eye image and the right half image part of a right eye image are displayed on one monitor screen while being divided with a division line as a boundary. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a three-dimensional image capturing camera adjustment assisting device, and more particularly to a three-dimensional image capturing camera adjusting assisting device used for adjusting two stereoscopic image capturing cameras so that a relative error is minimized.

  When displaying a stereoscopic moving image, for example, a moving image captured from multiple viewpoints using two or more cameras is synthesized, and the synthesized moving image is supplied to one monitor device, or a plurality of projectors A three-dimensional moving image is displayed by projecting onto one screen using.

  When displaying a 3D moving image on the monitor device or the screen, in order to make the viewer see the 3D moving image more naturally (displaying a 3D moving image that does not feel tired when viewing for a long time) It is necessary to adjust various adjustment items between a plurality of cameras used for shooting at the same time. The above adjustment items include (1) vertical alignment for setting the same height, (2) brightness, (3) white balance, (4) color balance, (5) zooming, etc. There is.

  On the other hand, right-eye video is displayed on the right half of the screen and left-eye video is displayed on the left half of the screen, and the center position of each video is used as a guide mark to align the video during stereoscopic image shooting. There is known a stereoscopic image positioning device that eliminates the shift in the height direction of two images for the right eye and the left eye by combining them and displaying them together (for example, see Patent Document 1).

Japanese Patent Laid-Open No. 10-322725

  However, since the stereoscopic image positioning device described in Patent Document 1 is configured to display the left-eye and right-eye images respectively on the left and right halves of one screen of the viewfinder of one video camera, The left-eye video signal and the right-eye video signal are separately output from the camera and cannot be applied to a stereoscopic video display system configured to synthesize them.

  A method of adjusting the camera by separately viewing the left-eye video signal and the right-eye video signal with a viewfinder or a monitor device attached to each of the two cameras is also conceivable. However, with this method, it is necessary to adjust the brightness, white balance, color balance, etc. of the two viewfinders or monitor devices to be displayed in advance, and it is necessary to take into account the adjustment of their characteristic variations. Is complicated and troublesome.

  Another possible method is to insert an input selector between the two cameras and the monitor device, and adjust the camera by individually viewing the images of each camera displayed on the monitor device while switching the input selector. However, this method does not require consideration of variations in the characteristics of the monitor device. However, since the entire screen is switched, it is necessary for the adjuster to store an image, which is easily influenced by the ability of the adjuster, and is objective and accurate. Adjustment is difficult. In addition, since a general input selector does not have a function of synthesizing a stereoscopic moving image, the input selector is connected to a monitor device at the time of adjustment, and when creating a stereoscopic moving image, the stereoscopic image editor is replaced with a monitor device instead of the input selector. The connection needs to be changed.

  Furthermore, a method of fixing the adjustment volumes of two cameras or recording / playback devices for recording / playing video signals from the two cameras to the same setting is also conceivable. However, this method has a problem that it is affected by changes in the photographing environment, changes in electrical characteristics, and optical changes in the equipment.

  The present invention has been made in view of the above points, and by simple adjustment work, it is possible to perform more objective and accurate camera adjustment regardless of the ability of the adjuster, the shooting environment, and changes in the electrical characteristics of the equipment. An object of the present invention is to provide a camera adjustment auxiliary device for photographing stereoscopic images.

  In order to achieve the above-mentioned object, the present invention writes a left-eye video signal inputted from the first camera, and then reads out and outputs based on the first readout control signal; After writing the video signal for the right eye inputted from the camera, the second storage means for reading out and outputting based on the second readout control signal, and the first and second readout control signals from the first storage means A read control signal generating unit configured to generate a read timing of the read left-eye video signal and a read timing of the right-eye video signal read from the second storage unit so as to be relatively shifted from each other; Of the left-eye video signal read out from the storage means and the right-eye video signal read out from the second storage means, one video signal within one horizontal scanning period Switching means for switching to and outputting the other video signal; and third storage means for storing and outputting signals for one horizontal scanning period of the left-eye video signal or right-eye video signal switched and output by the switching means; An on-screen display signal for displaying a division point that is a switching position of the video signal is synthesized with the left-eye video signal or the right-eye video signal output from the third storage unit at the switching timing of the switching unit. And dividing point synthesizing means for outputting to the outside.

  In order to achieve the above object, the present invention further includes switching control signal generation means for generating a switching control signal for controlling the switching timing within one horizontal scanning period by the switching means to an arbitrary switching timing. Features.

  Furthermore, in order to achieve the above-mentioned object, the present invention provides a left-eye video signal that is read out from the first storage means and displayed as a first marker signal for displaying a first marker indicating that it is a left-eye image. The first marker synthesizing means that synthesizes and outputs the second marker signal for displaying the second marker indicating that the image is for the right eye, and the right eye video signal read out from the second storage means and output. A frame in which second marker combining means for combining and outputting, a left-eye video signal combined with the first marker signal, and a right-eye video signal combined with the second marker signal are arbitrarily set. Any of selection means for alternately outputting for each period, left-eye video signal or right-eye video signal output from the dividing point synthesis means, and left-eye video signal or right-eye video signal output from the selection means Select one of the signals And further comprising an output switching means for outputting.

  According to the present invention, it is possible to perform a more objective and accurate camera adjustment by a simple adjustment operation regardless of the ability of the adjuster, the shooting environment, and the change in the electrical characteristics of the equipment.

1 is a system configuration diagram of an example of a stereoscopic video display system provided with a stereoscopic video imaging camera adjustment auxiliary device of the present invention. It is a block diagram of one embodiment of a camera adjustment auxiliary device for stereoscopic video shooting of the present invention. FIG. 3 is a detailed block diagram of an embodiment of a portion surrounded by a dotted line in FIG. 2. It is a figure which shows an example of the monitor screen at the time of a frame sequential mode. It is a figure which shows the 1st example of the monitor screen at the time of division | segmentation mode. It is a figure which shows the 2nd example of the monitor screen at the time of division | segmentation mode. It is a figure which shows the 3rd example of the monitor screen at the time of division | segmentation mode.

  Next, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a system configuration diagram of an example of a stereoscopic video display system provided with a stereoscopic video imaging camera adjustment auxiliary device according to the present invention. The stereoscopic image display system 100 is provided between a left-eye camera 1L and a right-eye camera 1R that capture the same subject, a monitor device 2 that displays a stereoscopic image, and the cameras 1L and 1R and the monitor device 2, respectively. And a stereoscopic image capturing camera adjustment assisting device 10 of the present invention.

  The left-eye camera 1L captures a subject with a parallax angle as if viewed by a human left eye and outputs a left-eye video signal. The right-eye camera 1R shoots the subject with a parallax angle as if it was viewed with a human right eye, and outputs a right-eye video signal. Each of the cameras 1L and 1R has adjustment functions such as brightness, white balance, and color balance, and is configured to be able to control the shooting direction and the like independently of each other.

  The stereoscopic image capturing camera adjustment auxiliary device 10 is an apparatus having an auxiliary function that makes it easy to adjust the adjustment functions of the cameras 1L and 1R to the same extent. For this purpose, the stereoscopic image capturing camera adjustment auxiliary device 10 receives the left-eye video signal from the camera 1L and the right-eye video signal from the camera 1R as input signals, and performs adjustments for a camera adjustment function according to the present invention described later. It has an adjustment video signal output function for generating and outputting a video image signal, and also has a 3D video signal output function for converting two input signals into a 3D video signal by a known method.

  The monitor device 2 is, for example, a liquid crystal display device, and displays the stereoscopic video signal or the adjustment video signal output from the stereoscopic video imaging camera adjustment auxiliary device 10. For example, as shown in FIG. 1, the image based on the adjustment video signal includes a left eye image 3L based on the left eye video signal from the camera 1L and a right eye image 3R based on the right eye video signal from the camera 1R. It is an image divided into two in the direction. As will be described later, the dividing line 4 can be moved to the left and right, and the image display areas of the left eye image 3L and the right eye image 3R change with the movement.

  FIG. 2 is a block diagram of an embodiment of the camera adjustment auxiliary device 10 for stereoscopic video shooting. As shown in the figure, the left-eye video signal and the right-eye video signal, which are moving image signals, are input from the cameras 1L and 1R through the input terminals 11L and 11R, respectively. A frame synchronizer 12, marker mixers 17L and 17R, a counter 18 for counting vertical synchronization signals, a position counter 19 for determining the position of a dividing line on a monitor screen, a frame mixer 20, and a stereoscopic image by a known method A 3D formatter 21 that generates a signal, an output terminal 22, operation keys SW1 to SW4, and changeover switches ISW1 to ISW4 are configured.

  The marker mixer 17L includes a left-eye marker (first eye image) indicating that the left-eye video signal is a left-eye image out of the left-eye video signal and the right-eye video signal output in synchronization with the frame synchronizer 12. 1st marker signal which is an OSD (on-screen display) signal for displaying 1 marker) is synthesized. Similarly, the marker mixer 17R is a second marker that is an OSD signal for displaying a right eye marker (second marker) indicating that the image is for the right eye on the right eye video signal output from the frame synchronizer 12. Synthesize the signal.

  The frame synchronizer 12 counts the sync separation circuits 13L and 13R, the frame memories 14L and 14R that temporarily store and output the left-eye video signal and the right-eye video signal, which are moving image signals, and the pixel clock. Counters 15L and 15R, and delay units 16L and 16R. The synchronization separation circuit 13L separates the vertical synchronization signal from the left-eye video signal, and the synchronization separation circuit 13R separates the vertical synchronization signal from the right-eye video signal. The delay units 16L and 16R delay the input vertical synchronization signal for a predetermined time in order to adjust the output timing.

  The frame memory 14L constitutes first storage means, and the frame memory 14R constitutes second storage means. Further, the counters 15L and 15R, the delay devices 16L and 16R, and the operation key SW3 are arranged so that the read timings of the frame memories 14L and 14R are shifted relatively arbitrarily as described later. The read control signal generating means for generating the read control signal is configured.

  FIG. 3 shows a detailed block diagram of an embodiment of the position counter 19 and the frame mixer 20 surrounded by a dotted line in FIG. In FIG. 3, the same components as those in FIG. As shown in FIG. 3, the frame mixer 20 includes a changeover switch ISW5 that constitutes switching means, a line memory 25 that is third storage means, and a dividing point synthesizer 26 that generates an OSD signal indicating a dividing line. Composed. The position counter 19 and the operation keys SW3 and SW4 constitute switching control signal generation means for generating a switching control signal for controlling the switching timing within one horizontal scanning period by the switching switch ISW5 to an arbitrary switching timing.

  The stereoscopic image capturing camera adjustment auxiliary device 10 according to the present embodiment generates an adjustment video signal for a camera adjustment function and outputs it (hereinafter referred to as an adjustment mode), and two inputs using a known method. The operation is performed in any one of the operation modes (hereinafter referred to as the 3D synthesis mode or the normal mode) in which the signal is converted into a stereoscopic video signal and output. The operation key SW2 is set to one of the adjustment mode and the 3D synthesis mode (normal mode), and the changeover switch ISW4 is switched according to the setting mode.

  Further, in the adjustment mode, a frame sequential mode in which the video signal for the left eye and the video signal for the right eye are switched every predetermined frame period, a dividing line is displayed on the monitor screen, and the left eye image and the right eye image are simultaneously displayed. There is a split mode. The operation key SW1 is set to one of the frame sequential mode and the division mode, and the changeover switch ISW3 is switched according to the setting mode.

  Further, the division mode includes a frame fixing mode in which a frame image displayed on the monitor screen is fixed without being moved within the screen, and a frame movement mode in which the frame image is moved in the horizontal direction within the screen. The operation key SW3 is set to one of the frame fixing mode and the frame moving mode, and the changeover switch ISW1 is switched according to the setting mode.

  The left / right key SW4 in the operation key is a key for moving the dividing line on the monitor screen leftward or rightward in the dividing mode, and the signal is supplied to one terminal of the changeover switch ISW1 and the position counter 19. Is done. The position counter 19 determines the position of the dividing line on the monitor screen in the dividing mode based on the pixel clock, the vertical synchronizing signal, and the horizontal synchronizing signal.

  The changeover switch ISW2 selects one of the left-eye video signal combined with the marker from the marker mixer 14L and the right-eye video signal combined with the marker from the marker mixer 14R. The changeover switch ISW3 selects one of the signal from the changeover switch ISW2 and the output signal of the frame mixer 20 (specifically, the dividing point synthesizer 26 in FIG. 3). The changeover switch ISW4 selects one of the signal from the changeover switch ISW3 and the stereoscopic video signal from the 3D formatter 21, and outputs the selected signal to the output terminal 22.

  Next, the operation in the adjustment mode of the present embodiment will be described.

  First, the frame sequential mode will be described. In the frame sequential mode, the changeover switch ISW3 is connected to the terminal 3a by operating the operation key SW1, and the changeover switch ISW4 is connected to the terminal 4a by operating the operation key SW2.

  In this state, the video signal for the left eye input from the camera 1L via the input terminal 11L is separated into a horizontal synchronization signal and a vertical synchronization signal by the synchronization separation circuit 13L, and based on the separated horizontal synchronization signal and vertical synchronization signal. Are written in the frame memory 14L. On the other hand, the video signal for the right eye input from the camera 1R via the input terminal 11R is separated into a horizontal synchronization signal and a vertical synchronization signal by the synchronization separation circuit 13R, and based on the separated horizontal synchronization signal and vertical synchronization signal. It is written in the frame memory 14R.

  The counters 15L and 15R count the pixel clock for one frame of the left-eye video signal by operating the operation key SW3, and supply the counter value to the delay units 16L and 16R. The delay devices 16L and 16R respectively store the left-eye video stored in the frame memory 14L in synchronization with the vertical synchronization signal separated from the left-eye video signal when the counter values from the counters 15L and 15R reach predetermined values, respectively. The signal and the right-eye video signal stored in the frame memory 14R are simultaneously read out. As a result, the left-eye video signal and the right-eye video signal read from the frame memories 14L and 14R are synchronized with each other.

  The marker mixer 17L synthesizes an OSD signal (first marker signal) indicating a left-eye marker with the left-eye video signal that is a moving image signal read from the frame memory 14L, and the synthesized left-eye video signal. Is output to the terminal 2a of the changeover switch ISW2. At the same time, the marker mixer 17R synthesizes the OSD signal (second marker signal) indicating the right-eye marker with the right-eye video signal that is the moving image signal read from the frame memory 14R, The right-eye video signal is output to the terminal 2b of the changeover switch ISW2.

  The changeover switch ISW2 switches and connects the terminals 2a and 2b based on the switching signal output every time the counter 18 reaches a predetermined count value, and alternately switches the left-eye video signal and the right-eye video signal after the marker signal synthesis. select. Here, the counter 18 outputs a switching signal every time, for example, 30 vertical synchronizing signals separated and delayed from the left-eye video signal output from the delay unit 16L are counted. Thereby, the changeover switch ISW2 alternately selects the left-eye video signal and the right-eye video signal after the marker signal synthesis every 30 frame periods. That is, the counter 18 and the changeover switch ISW2 constitute selection means for alternately selecting the left-eye video signal and the right-eye video signal after the marker signal synthesis every arbitrarily set frame period (here, 30 frame periods). .

  In the frame sequential mode, as described above, since the changeover switch ISW3 is connected to the terminal 3a and the changeover switch ISW4 is connected to the terminal 4a, the marker signal synthesis alternately selected every 30 frame periods by the changeover switch ISW2 The subsequent left-eye video signal and right-eye video signal are output to the output terminal 22 through the changeover switches ISW3 and ISW4, and are supplied to the monitor device 2. That is, the changeover switches ISW3 and ISW4 constitute output switching means.

  FIG. 4 shows an example of a monitor screen in the frame sequential mode. FIG. 4A shows a monitor screen in which the left eye marker 31L is displayed on the left eye image 30L based on the left eye video signal. FIG. 4B shows a monitor screen in which the right eye marker 31R is displayed on the right eye image 30R based on the right eye video signal. As described above, these monitor screens are switched every 30 frame periods. However, since the positions of the left-eye marker 31L and the right-eye marker 31R in the screen are different, the adjuster can identify whether the current monitor screen displays the left-eye image or the right-eye image. is there.

  Then, the adjuster compares these two monitor images that are alternately switched and displayed every 30 frame periods, and the camera 1L or 1R that outputs the other monitor image based on one of the monitor images is used. The brightness and color balance can be adjusted, and the direction of the camera (downward or upward) can be adjusted. Although the above adjustment can be performed manually, it can also be performed automatically.

  Next, the operation in the split mode will be described. In this split mode, the changeover switch ISW3 is connected to the terminal 3b by the operation of the operation key SW1, and the changeover switch ISW4 is connected to the terminal 4a by the operation of the operation key SW2. In the split mode, the operation key SW3 is operated.

  In this state, in the same manner as in the frame sequential mode described above, the frame memories 14L and 14R generate the left-eye video signal and the right-eye video signal, which are moving image signals, based on the read control signals from the delay units 16L and 16R. Read in synchronization with each other. The frame mixer 20 switches the left-eye video signal and the right-eye video signal read from the frame memories 14L and 14R within one horizontal scanning period, and synthesizes and outputs an OSD signal indicating a division point at the switching time. The position of the dividing point is set by a signal from the position counter 19.

  That is, as shown in FIG. 3, the frame mixer 20 includes a changeover switch ISW5, a line memory 25, and a dividing point synthesizer 26. The changeover switch ISW5 is controlled by a changeover control signal from the position counter 19, and is read out from the left-eye video signal read from the frame memory 14L supplied to the terminal 5a and the frame memory 14R supplied to the terminal 5b. One of the right-eye video signals is switched and output within one horizontal scanning period.

  The position counter 19 outputs a switching control signal at a switching timing on one line based on the pixel clock of the video signal for the left eye, the horizontal synchronizing signal, the vertical synchronizing signal, and the signals from the left / right key SW4 and the operation key SW3. The right-eye video signal and the left-eye video signal switched by the selector switch ISW5 are supplied to the line memory 25 and temporarily stored for one line, and then read out in synchronization with the pixel clock.

  The dividing point synthesizer 26 determines the dividing point at the switching timing of the right-eye video signal or the left-eye video signal for one line read from the line memory 25 (switching point for each line of the selector switch ISW5). The dividing point synthesizing means for synthesizing and outputting the OSD signal shown is configured. Here, since the timing of the above switching timing is the same for each line in one frame period, the pixel position of the dividing point to be synthesized is the same for each line, and the monitor screen displays a single vertical line as described later. Looks like a dividing line.

  In the division mode, as described above, since the changeover switch ISW3 is connected to the terminal 3b and the changeover switch ISW4 is connected to the terminal 4a, after the division point synthesis output from the frame mixer 20 (division point synthesizer 26). The left-eye video signal or the right-eye video signal is output to the output terminal 22 through the changeover switches ISW3 and ISW4, and is supplied to the monitor device 2.

  FIG. 5 shows a first example of a monitor screen in the split mode. FIG. 5A shows a monitor screen on which a left-eye image 30L based on a left-eye video signal is displayed. FIG. 5B shows a monitor screen on which the right-eye image 30R based on the right-eye video signal is displayed. In the split mode, as shown in FIG. 5C, the left half image portion 32L of the left eye image 30L and the right half image portion 32R of the right eye image 30R have split lines 34 on one monitor screen. It is divided and displayed on the border.

  The entire image obtained by synthesizing the left-eye image portion 32L and the right-eye image portion 32R shown in FIG. 5C should be a single subject image because the same subject is photographed. The left and right images are shrunk. As shown in FIG. 5E, the photographing at this time is a case where the subject 5 is photographed when it is ahead of the convergence point P between the left-eye camera 1L and the right-eye camera 1R. Unlike the original subject image, the composite image shown in FIG. 5C may occur when the image portion to be compared on the left and right for adjustment cannot be displayed.

  Therefore, the stereoscopic image capturing camera adjustment assisting apparatus 10 moves, for example, only the right eye image portion 32R to the right one pixel at a time from the left eye image portion 32L and the right eye image portion 32R, and finally FIG. As shown in D), the division mode is terminated when a right eye image portion 33R having an image portion to be compared with the left eye image portion 32L is displayed with the dividing line 34 as a boundary.

  Thereby, since the image part to be compared on the left and right is displayed on the monitor screen, the stereoscopic image capturing camera adjustment auxiliary device 10 causes the adjuster to simultaneously compare the left-eye image part 32L and the right-eye image part 33R at this time, The brightness and color balance of the camera 1L or 1R outputting the other image with reference to one of the images can be adjusted, and the direction of the camera (downward or upward) can be adjusted. . Although the above adjustment can be performed manually, it can also be performed automatically.

  Here, the camera adjustment auxiliary device 10 for 3D image shooting connects the changeover switch ISW1 to the terminal 1a by the first operation of the operation key SW3 shown in FIG. 2, and only the counter 15L out of the counter 15L and the counter 15R is connected. A state in which the signal from the left / right key SW4 is received, and the connection state of the changeover switch ISW1 remains unchanged by the second operation of the operation key SW3, and only the counter 15R among the counters 15L and 15R receives the signal from the left / right key SW4. And Further, the changeover switch ISW1 switches to the terminal 1b side which is the original connection state by the third operation of the operation key SW3, and the counters 15L and 15R do not accept the signal from the left and right key SW4.

  Therefore, as described with reference to FIG. 5, when only the right eye image 32R is moved to the right by one pixel, the counter 15R is operated by pressing the right key of the left / right key SW4 after operating the operation key SW3 twice. Then, a control signal is supplied to the delay unit 16R, and the read timing of the frame memory 14R is delayed by one pixel clock unit in one frame by a signal from the delay unit 16R.

  FIG. 6 shows a second example of the monitor screen in the split mode. FIG. 6A shows a monitor screen on which a left-eye image 30L based on a left-eye video signal is displayed. FIG. 6B shows a monitor screen on which the right eye image 30R based on the right eye video signal is displayed. In the split mode, as shown in FIG. 6C, the left half image 35L of the left-eye image 30L and the right half image 35R of the right-eye image 30R are displayed on one monitor screen with the dividing line 36 as a boundary. Are displayed separately.

  The entire image obtained by synthesizing the left-eye image portion 35L and the right-eye image portion 35R shown in FIG. 6C should be a subject image, but is an image that extends left and right from the original subject image. As shown in FIG. 6E, the photographing at this time is a case where the subject 5 is photographed when it is behind the convergence point P between the left-eye camera 1L and the right-eye camera 1R. In the composite image shown in FIG. 6C, unlike the original subject image, the image portions to be compared on the left and right for adjustment are displayed overlappingly, and the left and right images with the dividing line 36 as a boundary are compared. There are cases where it is difficult.

  Therefore, the stereoscopic image capturing camera adjustment assisting apparatus 10 moves, for example, only the right eye image portion 35R leftward one pixel at a time from the left eye image portion 35L and the right eye image portion 35R, and finally FIG. As shown in D), the division mode is terminated when a right eye image portion 37R having an image portion to be compared with the left eye image portion 35L is displayed with the dividing line 36 as a boundary.

  As a result, the image portion to be compared on the left and right sides with the dividing line 36 as a boundary is displayed on the monitor screen, and the stereoscopic image capturing camera adjustment assisting apparatus 10 then provides the adjuster with the left eye image portion 35L and the right eye image portion 37R at this time. And the brightness and color balance of the camera 1L or 1R outputting the other image based on one of the images can be adjusted, and the direction of the camera (downward or upward) Can be adjusted. Although the above adjustment can be performed manually, it can also be performed automatically.

  When only the right-eye image portion 35R is moved to the left by one pixel, the stereoscopic image capturing camera adjustment auxiliary device 10 operates the operation key SW3 twice and then presses the left-right key of the left / right key SW4. By pushing, a control signal is supplied from the counter 15R to the delay unit 16R, and the read timing of the frame memory 14R is advanced by one pixel clock unit in one frame by the signal from the delay unit 16R.

  FIG. 7 shows a third example of the monitor screen in the split mode. In the split mode described with reference to FIGS. 5 and 6, the position of the split line is fixed, and only the right eye image is moved. On the other hand, in the division mode shown in FIG. 7, the frame positions of the left-eye image and the right-eye image are fixed, but the position of the dividing line is moved and the display image area is also changed with the movement of the dividing line.

  FIG. 7A shows a monitor screen on which a left-eye image 40L based on a left-eye video signal is displayed. FIG. 7B shows a monitor screen on which a right-eye image 40R based on a right-eye video signal is displayed. In the split mode, as shown in FIG. 7C, the left half image 41L of the left eye image 40L and the right half image 41R of the right eye image 40R are displayed on one monitor screen with the dividing line 44 as a boundary. Are displayed separately.

  However, in this case, even if the convergence points of the left-eye camera and the right-eye camera coincide with the subject, the vertical directions of these cameras are different, so there is a difference between the heights of the images 41L and 41R. Hard to do.

  Therefore, the stereoscopic image capturing camera adjustment assisting apparatus 10 moves the dividing line 44 shown in FIG. 7C to the left, for example, as indicated by 45 in FIG. As described above, when only the dividing line is moved, the switching timing by the switching control signal supplied from the position counter 19 of FIG. 3 to the selector switch ISW5 is adjusted by operating the left / right key SW4.

  That is, the changeover switch ISW5 is switched to the terminal 5b side at a timing corresponding to the operation of the left / right key SW4 only once during one line period (one horizontal scanning period), and the right eye video signal is taken into the line memory 25. At the end (determined by the horizontal synchronization signal), the changeover switch ISW5 is switched to the terminal 5a side, and the video signal for the left eye is taken into the line memory 25. As a result, the video signal captured in the line memory 25 in each line period is initially the left-eye video signal, and the right-eye video signal is captured halfway, and the switching timing is arbitrarily set for each desired frame period. By shifting each of the set pixels, the divided display and the dividing line can be moved.

  With the movement of the dividing line, the left-eye image portion is changed from 41L to a small display width 42L, and the right-eye image portion is changed from 41R to a large display width 42R. The right eye image portion 42R is displayed. The moving width of the dividing line is a width that allows the adjuster to easily confirm a height shift between the left-eye image portion 42L on the left side of the dividing line 45 and the right-eye image portion 42R on the right side.

  In this way, the stereoscopic image capturing camera adjustment assisting apparatus 10 lowers the image capturing direction of the right eye camera so that the height matches the height of, for example, the left eye image portion 42L of the monitor screen shown in FIG. By adjusting in the direction, the right-eye image portion 43R finally matches the height of the left-eye image portion 42L as shown in FIG. As described above, in this division mode, the shift amount can be confirmed and adjusted more easily.

  Next, the operation in the 3D synthesis mode (normal mode) of the present embodiment will be described. In this mode, the changeover switch ISW4 is connected to the terminal 4b by operating the operation key SW2. Thus, the stereoscopic video signal generated by the 3D formatter 21 is supplied to the monitor device via the changeover switch ISW4 and the output terminal 22.

  The 3D formatter 21 receives the left-eye video signal read from the frame memory 14L and the right-eye video signal read from the frame memory 14R as input signals, and generates a stereoscopic video signal by a known method. Since the method for generating and displaying the stereoscopic video signal is not the gist of the present invention, a detailed description thereof is omitted, but there are a shutter glasses method, a polarization method, a method using no glasses, and the like.

  In the shutter glasses method, the left eye image and the right eye image are alternately displayed for each frame, and the shutter of the left eye glasses of the shutter glasses worn by the viewer and the shutter of the right eye glasses are alternately switched in synchronization with the display switching. On / off. In the polarization method, a left-eye image and a right-eye image are separately projected and displayed on two screens with light of different polarization directions, and polarized glasses consisting of left-eye glasses and right-eye glasses that transmit each polarized light are put on. A viewer who observes the left eye image and the right eye image independently and synthesizes them in the brain to obtain a stereoscopic image.

  Thus, according to the camera adjustment auxiliary device 10 for stereoscopic video shooting of the present embodiment, the left-eye image and the right-eye image are displayed alternately or simultaneously on the left and right of the dividing line in the adjustment mode. Differences (errors) from the right eye image can be easily and intuitively identified by the adjuster's eyes, so the brightness, white balance, color balance, shooting direction, etc. of the left and right eye cameras With regard to the various adjustment items, adjustments that minimize the relative error between the left-eye camera and right-eye camera can be made without using special equipment (measuring instruments). It can be performed more objectively and accurately without being influenced by changes in electrical characteristics.

  In addition, according to the stereoscopic video shooting camera adjustment assisting apparatus 10 of the present embodiment, since the adjustment mode and the 3D synthesis mode (normal mode) can be switched, without changing connected devices or adding equipment, The display for adjusting the camera and the display of the stereoscopic image can be performed by one monitor device 2.

1L Left-eye camera 1R Right-eye camera 2 Monitor device 10 Stereoscopic camera adjustment auxiliary device 12 Frame synchronizer 13L, 13R Sync separation circuit 14L, 14R Frame memory 15L, 15R, 18 Counter 17L, 17R Marker mixer 19 Position counter 20 Frame mixer 21 3D formatter 25 Line memory 26 Split point synthesizer 30L, 40L Left eye image 30R, 40R Right eye image 31L Left eye marker 31R Right eye marker 32L, 35L, 41L, 42L Left eye image portion 32R, 33R, 35R, 37R, 41R, 42R Right eye image part 34, 36, 44, 45 Dividing line SW1, SW2, SW3 Operation key SW4 Left / right key ISW1 to ISW5 selector switch

Claims (3)

A first storage means for reading out and outputting the left-eye video signal input from the first camera based on the first readout control signal;
A second storage means for reading out and outputting the right-eye video signal input from the second camera based on the second readout control signal;
The first and second readout control signals include a read timing of the left-eye video signal read from the first storage means and a read timing of the right-eye video signal read from the second storage means. Read control signal generating means for generating a relatively arbitrary timing shift;
Of the left-eye video signal read out and output from the first storage means and the right-eye video signal read out and output from the second storage means, one video signal to the other video within one horizontal scanning period. Switching means for switching to a signal and outputting;
Third storage means for storing and outputting signals for one horizontal scanning period of the left-eye video signal or the right-eye video signal switched and output by the switching means;
An on-screen display signal for displaying a division point which is a switching position of the video signal is displayed on the left-eye video signal or the right-eye video signal output from the third storage unit at a switching timing of the switching unit. 3D camera adjustment assisting device, comprising: a dividing point synthesizing unit that synthesizes and outputs to the outside at a time.   2. The camera adjustment for stereoscopic video shooting according to claim 1, further comprising a switching control signal generating unit configured to generate a switching control signal for controlling a switching timing within one horizontal scanning period by the switching unit to an arbitrary switching timing. Auxiliary device. First marker synthesizing means for synthesizing and outputting a first marker signal for displaying a first marker indicating a left-eye image, with the left-eye video signal read out from the first storage means. When,
Second marker synthesizing means for synthesizing and outputting a second marker signal for displaying a second marker indicating that the image is for the right eye, and the video signal for right eye read out from the second storage means. When,
Selection means for alternately outputting the left-eye video signal combined with the first marker signal and the right-eye video signal combined with the second marker signal every arbitrarily set frame period; ,
Either one of the video signal for the left eye or the video signal for the right eye output from the dividing point synthesizing unit, and the video signal for the left eye or the video signal for the right eye output from the selection unit. 3. The stereoscopic image capturing camera adjustment auxiliary device according to claim 1, further comprising output switching means for selectively outputting.