JP2000261830A - Stereoscopic video image pickup device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stereoscopic image pickup device with a small size and lightweight where an object image is lightly picked up, adjustment of the optical system is simple and high resolution can be realized. SOLUTION: The stereoscopic image pickup device is provided with a twin- lens optical system 1 that generates a right eye optical image and a left eye optical image from an optical image of an object, a right eye camera 2 that picks up a right eye optical image, a left eyed camera 3 that picks up a left eye optical image, and a CCU 4 that synthesizes the right eye video signal outputted from the right eye camera 2 and a left eye video signal outputted from a left eye camera 3 into one system of video signal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stereoscopic image photographing apparatus for photographing a subject in three dimensions.

[0002]

2. Description of the Related Art Techniques for photographing, transmitting, recording, and displaying stereoscopic images are widely used in medical, architectural, and entertainment fields. In the medical field, for example, in a surgical operation, a technique has been proposed in which an image of a surgical binocular microscope is captured by a video camera, image-processed, and supplied to a doctor as a stereoscopic image in real time. In the field of architecture,
In equipment that performs remote control, for example, civil engineering machinery,
A binocular video of the situation at the site is photographed by a video camera, and is supplied to the operator in real time as a stereoscopic video.

[0003] Furthermore, stereoscopic video produced for entertainment purposes has been showing signs of spreading by a system in which a head-mounted display (HMD) is mounted and separate images are supplied to the right eye and the left eye. .

[0004] As the simplest and most practical method of stereoscopic television shooting, a "single camera stereoscopic method" is used.
(Registered Patent No. 2,607,828, NHK)
There are engineering services Ryo Mochizuki and Nagashima Medical Instruments. In this method, a pair of images for the right eye and the left eye captured by a binocular optical system are projected onto the right and left halves of an imaging surface (for example, a CCD) of a single camera, and photographed.

[0005] Therefore, the obtained image signal is a system of video signals, and a system of image processing, recording, and display for one system of video captured by a single camera can be used as it is. FIG. 17 shows a display example of this one-system video signal. As shown in FIG. 18, for example, as shown in FIG. 18, a three-dimensional moving image is recognized by viewing the right-eye moving image with the right eye and the left-eye moving image with the left eye.

[0006] In the "single camera stereoscopic system", a high-vision camera is used as a camera, but another type of video camera, for example, an NTSC camera (used for ordinary television broadcasting and home video, having a vertical: horizontal width of 3). : 4.

In order to perform such photographing, the “single camera stereoscopic system” employs a binocular optical system 10 as shown in FIG.
1 is taken as an image pickup plane (CC
D) Width-adjusting prism 102 for projecting the right and left halves of 106 separately, knife edge 103 and knife edge 103 for separating the left and right image light so that they do not mix at the center of imaging surface 106 Relay lens 104 for forming an image at the right and left stereoscopic images
An optical system such as a relay lens 105 for rotating an image so as to correspond to the left and right of the optical disk 6 is used.

Here, the functions of the main optical system components of the "single camera stereoscopic system" will be described. Width alignment prism 10
Without 2, the distance between the left and right optical axes of the binocular optical system 101 is limited to a size that is compatible with the size of the imaging surface. Generally, since the imaging surface 106 is small, the image for the right eye and the image for the left eye are obtained by capturing the subject from almost the same direction, and as a result, a three-dimensional effect cannot be obtained. therefore,
By using the width shifting prism 102, it is necessary to increase the distance between the optical axes of the left and right optical systems.

Also, if there is no knife edge 103, FIG.
As shown by 0, the image for the right eye is projected not only on the right half of the imaging surface 106 but also on a part on the left side, and the same applies to the left eye. For this reason, the central part of the imaging surface 106 receives the light of the image for the right eye and the light of the image for the left eye at the same time, and the two overlap to capture a mixed image.

Therefore, as shown in FIG. 21, it is necessary to use the knife edge 103 so that the left and right optical images are partially shielded by the knife edge 103 so that no overlapping portion occurs.

To obtain the effect of the knife edge 103, an optical image (real image) on which the knife edge 103 is placed must be formed. For this purpose, relay lens 1
04 is required.

The relay lens 104 functions to rotate the left and right erect images so that they correspond to the left and right sides of the imaging surface. That is, the image is projected on the right half of the imaging plane 106 for the right eye, the image for the left eye is projected on the left half of the imaging plane 106, and each is an erect image as viewed from the camera.

However, if it is desired to project an image for the right eye on the left half of the imaging surface 106 and project an image for the left eye on the right half of the imaging surface 106, for example, another optical system is provided for each of the left and right optical systems. And insert each convex image to 18
The camera may be rotated by 0 degrees (that is, inverted) and the camera may be rotated by 180 degrees and attached. By taking an inverted image with an inverted camera,
An image signal of an erect image is obtained, and as a result, an image for the right eye is displayed on the left half of the screen, and an image for the right eye is displayed on the left half of the display screen.

The single-camera stereoscopic system has the following advantages as compared with a system in which left and right images are separately photographed using two cameras.

(1) Camera, camera control unit (CCU: Camera Control Uni)
t), a single communication line such as a signal cable, an image processing device, a recording device, and the like are required. Therefore, it is inexpensive, lightweight and small.

(2) Since photographing, recording, image processing, reproduction and the like can be performed by one system, no special timing adjustment is required for recording and reproducing the left and right images. If the left and right moving images are simply recorded by two systems of recording devices, the timing of the left and right images will be shifted when reproduced. For this reason, a special device having a mechanism in which the two devices operate synchronously for both recording and playback is required.

(3) Shooting, recording, image processing, reproduction, etc.
Since only one system is required, image adjustment is easy. Since the signal characteristics of the CCU, the image processing device, the recording device, and the like are different for each device, when two systems are used, there is a difference in gain, contrast, brightness, color tone, and the like between the right-eye image and the left-eye image. It is not easy to constantly adjust both so that they do not occur.

(4) Since there is only one camera, it is easy to adjust the camera so that it does not rotate relative to the optical system. For this reason, it is possible to exchange and adjust a camera or an optical system on site.

(5) In the method in which the left and right images are separately photographed by using two cameras, it is necessary to perform a process of synthesizing the video signals of the left and right images via a frame memory, which is inevitable. Although a time delay such as 1/30 second for one frame occurs, in the single-camera stereoscopic method, such a combining process is not required, and therefore, in principle, the delay does not occur.

The "single camera stereoscopic system" has various advantages as described above, but has the following problems. (1)
In the single-camera stereoscopic system, since a complicated optical system including many optical elements needs to be used, losses due to reflection on the surface of the lens or the prism are accumulated, and the image becomes dark. (2)
The use of a knife edge lengthens the optical path, which makes the device larger and heavier. In order to reduce the size of the device, there is a method in which a prism is inserted to fold the optical path, but this makes the device heavier and darkens the image. (3) It is necessary to adjust the optical system such as a knife edge at the time of manufacturing.
(4) In order for the left and right images to correspond exactly in stereoscopic viewing, the camera must not rotate with respect to the optical system. (5) The left and right images are respectively projected on half of the pixels on the imaging surface. For this reason, the resolution of each of the left and right images is at most half the highest performance of the used image sensor. In order to increase the resolution, a high-performance image sensor (expensive) must be used.

[0021]

SUMMARY OF THE INVENTION It is an object of the present invention to obtain an image brightly, to easily adjust an optical system, to realize a high resolution, and to separately photograph left and right images using two cameras. It is an object of the present invention to provide a small and lightweight stereoscopic image photographing apparatus which does not have a problem of causing a time delay due to a process of synthesizing the video signals of the left and right images in the method.

[0022]

According to the present invention, the left and right optical images generated by the binocular optical system are respectively picked up by separate cameras, and two system video signals output from these two cameras are converted into one image signal. This is to synthesize and output the same system video signal as that output from one camera.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a configuration of a stereoscopic video photographing apparatus according to the present embodiment. FIG. 2 is a detailed structural diagram of the binocular optical system of FIG. The binocular optical system 1 is used to generate an optical image for the right eye and an optical image for the left eye from an optical image of a subject, and to enlarge and reduce the optical image for the right eye and the optical image for the left eye in conjunction with each other. And a master lens 13 for forming a right-eye optical image and a left-eye optical image on the imaging surface of the CCD 21 of the right-eye camera 2 and the imaging surface of the CCD 31 of the left-eye camera 3, respectively. Is done.

In the binocular optical system 1, the right-eye optical image and the left-eye optical image are separately captured by the right-eye camera 2 and the left-eye camera 3, respectively. Unlike the method, a knife edge and a variable stop are not required, and a relay lens for forming a real image at the position of the knife edge is not required.

Camera control unit (CCU)
The device 4 has a function of adjusting a gain of a camera, a function of applying gamma correction to a video signal, a function of adding (compositing) a blanking signal to a video signal, and a function of adding (compositing) a synchronization signal to a video signal. In addition to the general functions of the CCU, two-system video signals of a right-eye video signal output from the right-eye camera 2 and a left-eye video signal output from the left-eye camera 3 are horizontally scanned. The lines are alternately combined into one video signal, that is, the horizontal scanning line portion of the right-eye video signal and the horizontal scanning line portion of the left-eye video signal are combined into one video signal of the combined system. A characteristic feature of the present invention is to assign and output the first half and the second half of one horizontal scanning line, respectively.

The right-eye camera 2 and the left-eye camera 3 employ a television broadcast standard having an aspect ratio of 3: 4. The video signal for the right eye and the video signal for the left eye having the aspect ratio of 3: 4 are combined into one system in the camera control unit device 4, and the HDTV (high definition televisio) having an aspect ratio of 3: 4 or more is horizontally long.
The video signal is output as a video signal of the n) system, for example, a high vision system having an aspect ratio of 9:16.

As shown in FIG. 3, the configuration of the camera control unit 4 includes a right-eye video signal output from the right-eye camera 2 and a left-eye video signal output from the left-eye camera 3. First, in the signal synthesizing unit 41, the horizontal signals are alternately output by analog processing in the analog processing, and the high-definition camera control unit (high-definition CCU) converts the synthesized signal into a blanking signal or a synchronizing signal in the video signal. And the like, and add (composite) necessary information such as the same, and output it as a video signal of one system of the Hi-Vision standard. Alternatively, as shown in FIG. The video signal for the right eye and the video signal for the left eye output from the camera 3 for the left eye are combined with the camera control unit for the right eye (right C
CU) 43 and camera control unit for left eye (left C
The necessary information such as a blanking signal and a synchronizing signal is separately added (composite) with the CU) 44, and then alternately adjusted for each horizontal scanning line by the signal synthesizing unit 45 and output as one system video signal. It may be configured to do so.

As shown in FIG. 5, first, a right-eye video signal output from the right-eye camera 2 and a left-eye video signal output from the left-eye camera 3 are converted into a right-eye camera analog digital signal. A converter (right ADC) 46 and a left-eye analog-digital converter (left ADC) 47
After converting the digital signals into digital signals separately, the processor 48 combines the digital signals into one video signal by digital processing, and adds (compounds) necessary information such as a blanking signal and a synchronization signal. .

FIGS. 6A and 6B show the right-eye video signal output from the right-eye camera 2 by focusing on one horizontal scanning line. The optical image for the right eye generated by the binocular optical system 1 is formed on the imaging surface of the CCD 21 of the camera 2 for the right eye, and is controlled as a one-dimensional signal under the control of the camera control unit device 4, that is, the imaging surface is converted into a large number of horizontal images. The signals are divided into scanning lines, and signals for each horizontal scanning line are sequentially output from the top. Note that the signal for the horizontal scanning line is a serial signal in which electric signals corresponding to the amounts of received light converted by a plurality of pixels on the horizontal scanning line are arranged in time series according to the pixel positions on the horizontal scanning line.

In this read control, the horizontal synchronization is
Basically, it is performed according to the HDTV system. The right-eye camera 2 has an aspect ratio of 3: 4,
By outputting this by adding a non-signal portion to the head (first half) of the horizontal scanning line where a signal actually exists, horizontal synchronization can be easily achieved by the 9:16 high definition system. . This is as if there is a “virtual imaging surface” larger than the actual imaging surface, and the actual imaging surface roughly corresponds to the right half of the “virtual imaging surface” and the left half of the “virtual imaging surface” Simulates a situation in which a video signal obtained from a pixel corresponding to is no signal. Therefore, if only the signal obtained from the right-eye camera 2 is displayed on the display, the image captured by the right-eye camera 2 is displayed on the right half of the screen as shown in FIGS. 7A and 7B. The left half of the no signal goes dark.

In this embodiment, as shown in FIG. 6, the non-signal portion is extended to a portion (A) on the left side of the actual image pickup surface of the right-eye camera 2. Therefore, the video part captured by this extension is not displayed, and the situation of obstructing the stereoscopic view in which the left and right images are superimposed at the boundary part like the knife edge in the conventional single camera stereoscopic method is avoided. Can be. This also indicates that the width of the pixels constituting the imaging surface does not necessarily have to be exactly half the “virtual imaging surface”.

The same applies to the reading of signals from the left-eye camera 3, as shown in FIGS. 8 (a) and 8 (b).
An optical image for the left eye is projected on the imaging surface of the camera 3 for the left eye, this is converted into an electric signal by pixels, and a time-series signal is sequentially scanned by horizontal scanning with the same horizontal synchronizing signal of the same high definition as the camera 2 for the right eye. Read as At the time of this reading, contrary to the case of the right-eye camera 2, a non-signal part is added to the tail part (the latter half) of the horizontal scanning line and output. This is as if the actual imaging surface is a "virtual imaging surface"
, And the video signal obtained from the pixel corresponding to the right half of the “virtual imaging surface” is no signal.
It simulates the situation.

The reading from the right-eye camera 2 and the left-eye camera 3 is performed in a horizontal synchronization in accordance with a single high-vision clock signal (synchronization signal) supplied by the CCU device 4. Therefore, FIG. 8), the right-eye video signal for one horizontal scanning line including the non-signal portion in the first half, and FIG.
The video signal for the left eye of one horizontal scanning line having the same number and including the non-signal portion in the latter half shown in (b) is simultaneously output.

Under the control of reading signals from the cameras 2 and 3, the CCU device 4 outputs a right-eye video signal including a non-signal portion in the first half and a left-eye video signal including a non-signal portion in the second half. Are input synchronously and added as they are, or the video signal from the right-eye camera 2 for the right half of the horizontal scanning line and the video signal from the left-eye camera 3 for the left half of the horizontal scanning line, respectively. Hiring,
The signal is synthesized with the signal of one horizontal scanning line and output.

Therefore, the output from the CCU device 4 is a video signal of one system similar to the output signal from one HDTV camera. When this is displayed on a display, it is shown in FIGS. 9 (a) and 9 (b). ), The image from the right-eye camera 2 is displayed on the right half of the screen, and the image from the left-eye camera 3 is displayed on the left half of the screen.

The stereoscopic image photographing apparatus according to the present embodiment is mainly assumed to be applied to a medical X-ray fluoroscope. As is well known, in a medical X-ray fluoroscope, the X-ray emitted from an X-ray tube is used.
After the rays pass through the human body, they enter the fluorescent screen, and the fluorescent screen emits visible light according to the X-ray dose. Therefore, a fluoroscopic image of the human body appears on the fluorescent screen. This image is taken with a high-definition CCD camera,
It is displayed on a display such as a CRT. The CCD camera used in such an apparatus has a high resolution of one million pixels or more and has a substantially square angle of view, and is therefore suitable for use as the camera of the present embodiment. In this case, a high definition signal is suitable as a standard of a signal output from the CCU. The reason is that the aspect ratio of the angle of view in HDTV is 9:16, and when the aspect ratio is divided into right and left halves, a substantially square (9: 8) angle of view can be obtained. In addition, the highest resolution of Hi-Vision is 2 million pixels,
This exactly matches the amount of information output by the two CCD cameras 2 and 3 described above.

According to the present embodiment, (1) the optical system is compared with the conventional method of separately outputting two systems of video signals for the left and right eyes using two cameras and the single camera stereoscopic method. Is simple (because there are few lenses and prisms), so the image is bright. (2) Since the optical system is simple, it is small, lightweight and inexpensive. (3) No knife edge is required, so no adjustment is required for the knife edge. (4) Since two cameras are used, the left and right images are respectively projected on the entire imaging surface, so that the resolution of each of the left and right images matches the performance of one camera. In order to obtain a resolution equivalent to that of the “viewing method”, an effect is realized that two general TV cameras, which are much cheaper and easily available, may be used.

Further, according to the present embodiment, the advantages of the conventional single-camera stereoscopic vision system can be maintained as it is,
In other words, (1) the camera, the camera control unit, the communication path such as the signal cable, the image processing device, the recording device, and the like can be provided by one system, so that it is inexpensive, lightweight, and small. No special timing adjustment is required for recording and playback of left and right images. In other words, if two systems of recording devices record left and right moving images separately, the timing of the left and right images will be shifted when played back. In both cases, a mechanism in which the two devices operate in synchronization is required, but in the present embodiment, such a mechanism is not necessary. (3) Since only one system is required for the image processing device and the like, image adjustment is performed. Easy, ie camera control unit,
Since the signal characteristics of the image processing device, the recording device, and the like are different for each device, when using two systems, for example, there is no difference in gain, contrast, brightness, color tone, and the like between the right-eye image and the left-eye image. As described above, it is not easy to always adjust both, but in the present embodiment, since the video signals are combined into one system, such trouble does not occur. (4)
Further, even if it is desired to change the arrangement of the left and right images, the optical system does not need to be changed. (5) Since the left and right video signals need to be output alternately serially, the left and right images can be obtained by using two cameras. In principle, a time delay of 1/30 second for one frame due to the process of combining the video signals of the left and right images via the frame memory, which has been a problem in the method of separately shooting, does not occur.

In the above description, the left and right cameras 2,
The video signal from No. 3 is provided with no-signal portions in the first half and the second half, respectively. However, as shown in FIGS. 10, 11 and 12, a no-signal portion may not be provided. In this case, for example, a buffer memory (buffer storage device) is provided at the input stage of the CCU device 4, and the video signal from the right-eye camera 2 and the video signal from the left-eye camera 3 are temporarily Then, unnecessary portions of these video signals, that is, the portion shown in FIG. 10A are deleted, and the left and right video signals are serially connected and output as one horizontal scanning line. Note that the input from the cameras 2 and 3 and the output from the CCU 4 do not necessarily have to be in the same band.

Further, the number of horizontal scanning lines may be different between the inputs from the cameras 2 and 3 and the output from the CCU device 4. For example, it is conceivable to store signals for several lines in a buffer memory, and perform conversion by interpolation or averaging. As described in the related art, in the method of separately photographing the left and right images using two cameras,
It is necessary to perform processing of synthesizing the video signals of the left and right images via the frame memory, which inevitably causes a time delay of 1/30 second for one frame. However, in the present embodiment, since only signals for several lines are stored in the buffer memory, a delay of 1/1000 second actually occurs, but this is not a problem in practical use.

When two commercially available cameras having an aspect ratio of 4: 3 are used, these commercially available cameras are horizontally laid out so as to have an aspect ratio of 3: 4, and as a result,
A landscape HDTV frame with an aspect ratio of 16: 9 is created. In this case, two frame memories (1
It is necessary to perform the vertical / horizontal conversion of the scanning line using a buffer for a frame, so that it is undeniable that a delay of one frame occurs.

As shown in FIGS. 13, 14, and 15, the horizontal scanning line signals of the left and right cameras 2 and 3 are reduced by the CCU unit 4 to approximately half each by using processes such as thinning and moving average. The reduced right-eye video signal and the left-eye video signal may be serially connected and output as one horizontal scanning line signal. In this case, when the output signals are viewed on the display, the images of the left and right cameras 2 and 3 are displayed in a state of being halved in the horizontal direction. Therefore, it is necessary to correct the signals using appropriate signal processing or an optical system. For example, a cylindrical mirror can be used to magnify the image on the display only laterally.

Further, one horizontal scanning line signal may be output by connecting the horizontal scanning line signals of the left and right cameras 2 and 3 alternately in units of one pixel or a predetermined pixel. In this case, when the output signals are viewed on a display, the images of the left and right cameras are alternately arranged in a vertical stripe pattern. This is displayed on a so-called stereoscopic display device capable of stereoscopic viewing without glasses as shown in FIG. 16, and when it is observed, only the image from the right-eye camera 2 is displayed to the right eye, and the image from the left-eye camera 3 is displayed to the left eye. Only the video can be seen, and as a result, a stereoscopic image can be observed.

In addition, the present invention is not limited to the above-described embodiment, and can be implemented with various modifications.

[0045]

According to the present invention, since the left and right optical images are taken by two cameras, a complicated optical system such as a knife edge, a relay lens, and a variable aperture is unnecessary unlike the single camera stereoscopic system. Accordingly, the loss due to reflection on the surface of the lens or prism is reduced, and the optical path can be shortened. As a result, the image becomes brighter, and the size and weight can be reduced. Further, complicated and complicated fine adjustments regarding the optical system such as the knife edge and the mounting position of the camera are not required. Furthermore, in the single-camera stereoscopic method, the left and right images are captured by one camera, so the number of pixels per image is one.
Although the number of pixels of the two cameras is about half, in the present invention, since the left and right images are separately captured by the two cameras,
The number of pixels per image is equivalent to the number of pixels of one camera, and the resolution is improved. Furthermore, since the video signals of the two left and right cameras are combined into one system, the image processing device, recording device, and display device for one system of video captured by one normal camera in the single camera stereoscopic system are used as they are. There is no need to synchronize two video signals for recording and playback, and gain, contrast,
Various advantages such as a troublesome adjustment of matching brightness, color tone, and the like between the two cameras can be taken over as they are. Also, since the left and right video signals only need to be output alternately in a serial fashion, the left and right images can be captured via the frame memory, which has been a problem with the method of separately capturing the left and right images using two cameras. In principle, a time delay such as 1/30 second for one frame due to the signal combining process does not occur.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a stereoscopic image photographing apparatus according to a preferred embodiment of the present invention.

FIG. 2 is a detailed view of the binocular optical system of FIG.

FIG. 3 is a block diagram showing a configuration of the CCU device of FIG. 1;

FIG. 4 is a block diagram showing another configuration of the CCU device of FIG. 1;

FIG. 5 is a block diagram showing still another configuration of the CCU device of FIG. 1;

FIG. 6 is an explanatory diagram relating to processing of a right camera signal by the signal synthesizing unit of FIG. 3;

FIG. 7 is a diagram showing a display example of the processed right camera signal of FIG. 6;

FIG. 8 is an explanatory diagram relating to processing of a left camera signal by the signal synthesizing unit of FIG. 3;

9 is an explanatory diagram relating to a synthesis process of the processed right camera signal of FIG. 6 and the processed left camera signal of FIG. 8;

FIG. 10 is an explanatory diagram relating to another processing of the right camera signal by the signal synthesizing unit of FIG. 3;

FIG. 11 is an explanatory diagram relating to another processing of the left camera signal by the signal synthesizing unit of FIG. 3;

FIG. 12 is an explanatory diagram relating to a synthesis process of the processed right camera signal of FIG. 10 and the processed left camera signal of FIG. 11;

FIG. 13 is an explanatory diagram regarding still another process of the right camera signal by the signal combining unit in FIG. 3;

FIG. 14 is an explanatory diagram regarding still another process of a left camera signal by the signal combining unit in FIG. 3;

FIG. 15 is an explanatory diagram relating to a synthesis process of the processed right camera signal of FIG. 13 and the processed left camera signal of FIG. 14;

FIG. 16 is a diagram showing a stereoscopic display device corresponding to another synthesis process of the left and right camera signals by the signal synthesis unit of FIG. 3;

FIG. 17 is a diagram showing an example of a display screen according to a conventional single camera stereoscopic vision system.

FIG. 18 is a view showing an example of observation of a display screen by a conventional single camera stereoscopic vision system.

FIG. 19 is a configuration diagram of a conventional single-camera stereoscopic imaging apparatus.

FIG. 20 is an explanatory diagram relating to the purpose of employing the knife edge of FIG. 19;

FIG. 21 is a view showing the effect of the knife edge shown in FIG. 19;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Binocular optical system, 2 ... Right system camera, 3 ... Left system camera, 4 ... Camera control unit apparatus, 11 ... Objective optical system, 12 ... Zoom optical system, 13 ... Master lens, 21 ... Right system CCD, 22 ... Left system CCD, 41: Signal synthesis unit, 42: High-vision camera control unit, 43: Right system camera control unit, 44: Left system camera control unit, 45: Signal synthesis unit, 46: Right system analog-digital converter, 47 ... Left system analog / digital converter, 48 ... Processor

Claims (9)

[Claims] 1. A binocular optical system that generates an optical image for the right eye and an optical image for the left eye from an optical image of a subject, a right-eye camera that captures the optical image for the right eye, and a left eye that captures the optical image for the left eye And a synthesizing means for synthesizing a right-eye video signal output from the right-eye camera and a left-eye video signal output from the left-eye camera into a single-system video signal. 3D image shooting device. 2. A horizontal scanning line portion of the video signal for the right eye and a horizontal scanning line portion of the video signal for the left eye are formed into a first half and a second half of one horizontal scanning line of one system video signal after synthesis. The three-dimensional image photographing apparatus according to claim 1, wherein the three-dimensional image photographing apparatus is assigned to each of them. 3. The stereoscopic video photographing apparatus according to claim 1, wherein a non-signal portion having a predetermined width is provided at a boundary between the right-eye video signal and the left-eye video signal. 4. The synthesizing means includes: a synthesizing unit for synthesizing the right-eye video signal and the left-eye video signal; and a CCU having a function of converting a signal synthesized by the synthesizing unit into a composite video signal. The three-dimensional image photographing apparatus according to claim 1, further comprising: 5. The right-eye CC having a function of converting the right-eye video signal into a right-eye composite video signal.
U, a left-eye CCU having a function of converting the left-eye video signal to a left-eye composite video signal, and a synthesizing unit for synthesizing the right-eye composite video signal and the left-eye composite video signal. The stereoscopic video photographing apparatus according to claim 1, wherein 6. The synthesizing means has a function of converting a right-eye video signal into a right-eye digital video signal and a function of converting the left-eye video signal into a left-eye digital video signal. The stereoscopic image photographing apparatus according to claim 1, further comprising: a left-eye analog-digital converter; and a processor that synthesizes the right-eye digital video signal and the left-eye digital video signal by digital processing. 7. The stereoscopic video photographing apparatus according to claim 1, wherein the synthesizing unit outputs the one-system video signal as a high-vision video signal. 8. A binocular optical system that generates a right-eye color optical image and a left-eye color optical image from a color optical image of a subject, a right-eye CCD that captures the right-eye color optical image, and the left-eye color optical. A left-eye CCD that captures an image; and a unit that combines a right-eye video signal output from the right-eye CCD and a left-eye video signal output from the left-eye CCD into a single-system video signal. A stereoscopic video photographing device characterized by the following. 9. An optical system for generating a plurality of color optical images from a color optical image of a subject, a plurality of imaging units for individually capturing the generated plurality of color optical images, and an output from the plurality of imaging units Multiple video signals
Means for synthesizing into a system video signal.