JP3689976B2 - Optical adapter device for video shooting of 3D stereoscopic video signal converter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention processes a video image taken as a so-called “stereophotograph (stereo pair)” to obtain a dedicated video signal for right eye and left eye respectively. For conversion equipmentOptical adapter device for video shooting of 3D stereoscopic video signal converterIt is about.
[0002]
[Prior art]
Even if a three-dimensional stereoscopic vision device such as a so-called stereoscopic television is developed, a video camera device itself or a photographing method can be used to shoot, record and reproduce three-dimensional (3D) software for viewing the device. The handling of a video tape recorder (VTR) is difficult, and a simple method is required.
[0003]
In order to shoot a three-dimensional stereoscopic image, usually two video cameras are installed with their shooting lenses spaced apart from the width of both human eyes (usually about 65 mm). In this case, it is necessary to prepare two video cameras with suitable characteristics and firmly fix the photographing lens in a state separated by the eye width. In addition, video signals output from these two video cameras have to be recorded and reproduced by two VTRs that move in synchronization.
[0004]
Of course, a device capable of simultaneously recording two video signals with a single tape, such as so-called W-VHS, is commercially available. In order to view these two video signals in a stereoscopic manner, for example, using two video projectors, project the projection light onto the screen as light beams whose polarization directions are orthogonal to each other, and wear polarized glasses with corresponding polarization filters. How to see is known.
[0005]
Furthermore, as a method for simplifying the recording / reproduction, two video signals for the left eye and the right eye are converted into one video signal in which the left and right eye images are alternately displayed for each field. The technology to do is known. This signal can be displayed on a television screen and viewed with a pair of glasses with shutters that alternately close one eye in synchronism.
[0006]
Also, as a simpler shooting method, a method of shooting video in the form of so-called "stereoscopic photography" that projects right-eye and left-eye images on the right and left halves of the screen using optical techniques. Is to use. Furthermore, adapters and viewers for taking a slide of “stereoscopic photographs” with a camera are also commercially available. With this adapter, the right-eye is projected on the right half of the screen and the left-eye is projected on the left half, so if the misalignment between the centers of the two screens is less than the eye width on a small TV screen, autostereoscopic viewing is possible. Become. Furthermore, in the case of a larger screen, a wedge-shaped special lens may be attached (see Japanese Patent Application Laid-Open No. 59-30390).
[0007]
[Problems to be solved by the invention]
However, in the conventional 3D image shooting method using the two video cameras, it is necessary to fix the two cameras firmly and integrally in order to always keep the two shooting lenses apart by the eye width. . For that purpose, I would shoot on a solid tripod, which was not very mobile and I couldn't shoot on hand. In order to zoom in further, it was necessary to move the lens in conjunction with each other, and the operation was complicated. In addition, two video cameras with matching characteristics are necessary, and there is a disadvantage that it is economically burdensome for the user.
[0008]
On the other hand, it is only necessary to take a stereoscopic photograph with a single video camera, but in order to see the video taken with this method, it is necessary to place a face in the center of the TV screen, and the viewing position Was limited. Moreover, there is a disadvantage that only a vertically long image obtained by dividing the screen in half on the right and left can be seen. In the case of a large screen, it was necessary to put a wedge-shaped special lens on the eyes.
[0009]
  3D stereoscopic 3D video with 3D stereoscopic video with the video for one eye in the right half of the screen and the video for the other eye in the left half of the screen The image of the 3D stereoscopic video signal conversion device that cuts out the right screen and left screen of the signal and then converts and enlarges it to the maximum size of the above screen and makes it a dedicated video signal for each of the two eyes In an optical adapter device for photographing, an optical system for photographing an image including upper and lower portions of an image that is unnecessary when the right screen and the left screen are cut out is used. For this reason, the optical adapter device cannot be reduced in size.
In addition, there is a problem that the angle of view of the left and right images becomes remarkably small when a left-eye image and a right-eye image are captured on a single screen when incorporating a stereoscopic photograph type 3D stereoscopic image. It was.
Further, when performing the autostereoscopic viewing, it is difficult to execute unless there is an easy to see.
  Therefore, the present invention is a form taken by a method of taking a video in the form of a so-called “stereophotograph” in which images for the right eye and the left eye are projected on the right half and the left half of the screen by an optical technique. 3D to convert the video signal of the right eye and the left eye alternately into the video signal for each field, or convert it into two independent video signals for the right eye and the left eye Stereo video signal converterAdapter for shooting a video of a 3D stereoscopic video signal converting apparatus that solves the above-mentioned problemIs to provide.
[0010]
[Means for Solving the Problems]
  The present invention relates to a stereoscopic photograph type three-dimensional stereoscopic image in which the image for one eye is on the right half of the screen and the image for the other eye is on the left half of the screen. A three-dimensional stereoscopic video signal in which the right screen and the left screen of a stereoscopic video signal are cut out, converted to the maximum size of the above screen, and converted into a dedicated video signal for each of the two eyes. In the optical adapter device for photographing the image of the conversion device, an optical part for taking in the three-dimensional stereoscopic image of the stereoscopic photograph type,
  An optical system configured to cut the upper and lower parts of the image that are unnecessary when the right screen and the left screen are cut off.Provided, and a mark indicating the approximate center of the video at the approximate center of each of the right screen and the left screen is disposed in the cut portion of the video that is not necessary for the stereoscopic photograph type 3D stereoscopic video. Configured asIt is characterized by that.
[0011]
  And this invention furtherWide-angle means for widening the image is disposed in the optical part for taking in the three-dimensional stereoscopic image of the stereoscopic photograph type.It is configured as described above.
[0012]
With such a configuration, in the stereoscopic photo type, special glasses such as glasses with shutters and polarized glasses are worn on a screen such as a television screen that can only be seen from a central position and a vertically long screen. Because of this, many people can be seen at the same time on a landscape screen. In addition, by incorporating the 3D stereoscopic video signal converter having the above-described configuration into the video camera device, the optical adapter device for taking a stereoscopic photograph is simply attached in front of the taking lens of the video camera device, and the right side is alternately turned on every field. It is possible to output a video signal in which an enlarged screen for the eye and an enlarged screen for the left eye come, and to record / reproduce with a recording / reproducing apparatus such as a VTR.
[0013]
And even if you zoom in to make the left and right images, since you shoot after wide angle first, the enlarged will be canceled out, and the optical adapter device for stereoscopic photography will be video Before being mounted on the camera device, it is close to the angle of view of the photographic lens of the original video camera device, and can be seen in a more natural and easy-to-view state.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.
[0015]
[First Embodiment]
1 and 3 show a video camera device 1 according to a first embodiment of the present invention and a three-dimensional stereoscopic video signal conversion device 40 connected to the video camera body 2 of the video camera device 1. The video camera device 1 has an optical adapter device 20 for taking a stereoscopic photograph detachably attached to the front side of the video camera body 2 and an eye cup 15 with a magnifying lens 14 attached to the rear side of the video camera body 2. It is attached detachably. Further, the three-dimensional stereoscopic video signal conversion device 40 is provided with three adjustment operation knobs 42 on the front surface of the housing-type device main body 41. Further, a video tape recorder (VTR) 50 and a stereoscopic device 60 with shutter glasses are connected to the 3D stereoscopic video signal conversion device 40.
[0016]
As shown in FIGS. 1 to 3, the video camera body 2 of the video camera apparatus 1 is formed in a casing shape from a synthetic resin or the like, and the video camera body 2 has a solid-state imaging device (CCD) 3 as an imaging unit. Is built-in. A video signal photographed by the solid-state imaging device 3 is recorded / reproduced by a VTR 7 incorporated in the video camera body 2 via an amplifier 4, a video signal processing circuit 5 and a video recording / reproducing circuit 6. . A liquid crystal display (LCD) 9 as a small monitor is connected to the video recording / reproducing circuit 6 via a liquid crystal drive circuit 8. A photographing lens 10 is disposed at a position facing the solid-state imaging device 3 on the front surface of the video camera main body 2, and a microphone 12 is attached on the upper side of the front surface. Further, a change-over switch 13 is disposed on the left side surface of the video camera body 2.
[0017]
As shown in FIGS. 2 and 3, an optical adapter device 20 for stereoscopic photography is detachably screwed to a filter mounting screw portion (mount portion) 11 of the video camera body 2 of the video camera device 1. It is like that. A pair of left and right planar reflecting mirrors 22L and 22R are formed on the inner surfaces of the left and right inclined walls 21a and 21b of a synthetic resin case (image capturing portion) 21 that forms the outer casing of the optical adapter device 20 for stereoscopic photography. Is arranged. A pair of left and right planar reflecting mirrors 24L and 24R facing the pair of planar reflecting mirrors 22L and 22R substantially in parallel with the pair of planar reflecting mirrors 22L and 22R is formed at the rear of the center collar 23 in the case 21. Is arranged. As a result, an image corresponding to that seen from the left and right eyes separated by the eye width D (D≈65 mm) is focused on the left half and the right half and enters the photographing lens 10. A screw portion 25 is formed at the rear portion of the case 21, and the screw portion 25 is detachably screwed to the filter mounting screw portion 11 of the video camera body 2.
[0018]
As shown in FIGS. 1 to 3, a wide-angle adapter (wide-angle means) is provided in a pair of left and right openings 21 c and 21 d that form an image capturing portion formed on the front wall side of the case 21 of the optical adapter device 20. The optical adapter device 20 can be used integrally with the optical adapter device 20. The wide-angle adapter 30 includes a rectangular frame portion 31 and a pair of concave lenses (wide-angle means) 32L and 32R fitted into a pair of left and right openings 31a and 31b formed on the front side of the frame portion 31. Has been. The pair of openings 31a and 31b of the frame part 31, that is, the pair of concave lenses 32L and 32R, are large enough to cover the pair of left and right openings 21c and 21d that serve as the image capturing part of the case 21 of the optical adapter device 20. It is formed.
[0019]
As shown in FIG. 3, the video signal input terminal 41 a of the apparatus main body 41 of the 3D stereoscopic video signal conversion apparatus 40 is connected to the video signal output terminal 6 a of the video recording / reproducing circuit 6 of the video camera main body 2. When the output signal of the video signal of the video recording / reproducing circuit 6 of the video camera body 2 is input to the 3D stereoscopic video signal conversion device 40, the 3D stereoscopic video signal conversion circuit 43 built in the device main body 41 is used. It is processed. That is, the video output signal (OUT) from the video recording / reproducing circuit 6 is A / D converted by the A (analog) / D (digital) signal conversion circuit 44, and then stored in the two-dimensional memory 45, from which the operation is performed. A timing controller 48 to which a knob 42 and a sync separation circuit (Sync SEP) 47 are connected allows an arbitrary enlargement ratio (base X) at an arbitrary timing.₁, X₂, And enlargement ratios X and Y), the image is temporarily enlarged and then cut out. Then, the left-eye video signal and the right-eye video signal which are cut out by the 3D stereoscopic video signal conversion circuit 43 and enlarged to fill the screen are alternately displayed for each field. It is converted into a three-dimensional stereoscopic video signal containing an eye video signal, and is output as a single video signal (S) to the video signal output terminal 41 b of the apparatus body 41 via the D / A signal conversion circuit 46. It has become.
[0020]
As shown in FIG. 3, the VTR 50 and the television receiver 60 as a stereoscopic device are connected to the video signal output terminal 41 b of the three-dimensional stereoscopic video signal converter 40, respectively. In the television receiver 60, for example, left and right eye images e shown in FIGS. 4C and 4D displayed on the cathode ray tube (screen) 61._L, E_RIs stereoscopically viewed using glasses with shutters (special glasses) 70. That is, the left and right lens mounting frame portions of the frame 71 of the shutter-equipped eyeglasses 70 are provided with liquid crystal shutters 72L and 72R, and a light receiving portion (not shown) is mounted at the center of the frame 71. The light receiving unit receives infrared light encoded from a synchronization signal from an infrared light emitting device 62 installed on the television receiver 60. Then, the light receiving unit of the glasses with shutters 70 receives a signal from the infrared light emitting device 62, and the pair of left and right liquid crystal shutters 72L and 72R of the glasses with shutters 70 are connected to the above-mentioned images e._L, E_RIt can be viewed stereoscopically by opening and closing alternately according to the.
[0021]
4A taken by the video camera apparatus 1 using the stereoscopic system comprising the video camera apparatus 1, the three-dimensional stereoscopic video signal converter 40, the VTR 50, and the television receiver 60 of the first embodiment. In order to stereoscopically view the image a as shown in FIG. 2, first, as shown in FIG. 2, an optical adapter device for taking a stereoscopic photograph is attached to the filter mounting screw portion 11 of the video camera body 2 of the video camera device 1. Attach 20 and wide-angle adapter 30 together.
[0022]
Then, a scene a (video of a woman against the sea) as shown in FIG. At this time, as shown in FIG. 4 (B), the image b seen with the right eye by the optical adapter device 20 for stereoscopic photography._RAnd the video b seen with the left eye_LIs half-half on one screen b and is incident on the taking lens 10 (here, the background palm trees, yachts, clouds, etc. Subtle due to parallax).
[0023]
Here, FIG. 4A shows the angle of view when the optical adapter device 20 for stereoscopic photography is not attached to the video camera main body 2, and shows up to what range the image is captured. In FIG. 4B, since the wide-angle adapter 30 is attached, the magnification is roughly halved. Therefore, two images having the same angle of view as in FIG. Yes. If the wide-angle adapter 30 is not attached to the optical adapter device 20, the left and right images b in FIG._L, B_ROnly a portion of approximately an area of ¼ in FIG. 4A can be copied, and as a result, for example, only the face is zoomed up. By the way, in a three-dimensional stereoscopic image, in order to feel a three-dimensional image, it is important to obtain a three-dimensional effect more strongly by placing objects that can compare distances such as a foreground, a middle scene, and a distant view on one screen. In this sense, the role of the wide-angle adapter 30 is very important. Further, as can be seen from FIG. 4B, the upper and lower portions are cut, but this is in accordance with the object of the present invention, and the optical adapter device 20 for taking a three-dimensional photograph is not necessary later. This is because the upper and lower portions are not incident from the beginning, and the optical system that captures the upper and lower portions is omitted. As a result, the optical adapter device 20 can be reduced in size.
[0024]
The image b shown in FIG. 4B that has passed through the photographing lens 10 of the video camera device 1 is photographed on the CCD 3 of the video camera body 2. The video b is recorded / reproduced by the VTR 7 incorporated in the video camera main body 2, and is output from the video signal output terminal 6 a of the video camera main body 2 at this time. Further, the image b is also displayed on the LCD 9 as a small monitor, which looks as shown in FIG. 4B, so that the photographer can shoot while recognizing which range is being taken.
[0025]
Next, when the video output signal (OUT) of the video camera body 2 is input to the 3D stereoscopic video signal conversion device 40, it is processed by the 3D stereoscopic video signal conversion circuit 43. That is, the video b shown in FIG. 4B is the video b for the left eye._L4 (the inside of the left half hatching) is cut out by the three-dimensional stereoscopic video signal conversion circuit 43, enlarged to fill the screen, and cut out enlarged video e shown in FIG._LIn addition, for the right eye, the image b in FIG._R(The inside of the right half hatching) is cut out by the three-dimensional stereoscopic video signal conversion circuit 43, enlarged to fill the screen, and cut out enlarged video e shown in FIG._Rbecome that way. As an output signal from the video signal output terminal 41b of the 3D stereoscopic video signal conversion device 40, an image e for the left eye is used._LAnd right eye video e_RAre output as one video signal S that is alternately provided for each field. As shown in FIG. 3, one video signal S can be recorded / reproduced by another ordinary VTR 50 and can be stereoscopically viewed by a large number of people when viewed on the television receiver 60 through the glasses with shutters 70.
[0026]
In the above description, the image b in FIG._LI cut out the entire range, but actually the video b_LIt may be cut off with a margin around the slightly smaller part. Further, in the above-described stereoscopic vision system, a filled sequential stereoscopic signal (a signal that allows images for the right eye and the left eye to appear alternately for each field) as a stereoscopic photograph type video signal, which is received by the television receiver 60. However, the present invention is not limited to this, and two independent video signals for a right eye and a left eye are used as a stereoscopic picture type video signal. An image signal is created, and an image in which the polarization directions are orthogonal to each other is projected on a screen by two liquid crystal projectors each having a polarizing plate with horizontal and vertical polarization directions. ), A large number of observers may easily enjoy stereoscopic viewing.
[0027]
[Second Embodiment]
5 to 8 show a second embodiment. The optical adapter device for stereoscopic photography of the first embodiment is an optical system in which the upper and lower parts of the image are cut, but the video camera device (imaging device) 1 of the second embodiment is used. The optical adapter device 20 for taking a three-dimensional photograph is a full-size optical system in which a pair of left and right openings 21c and 21d of a case (image capturing unit) 21 are vertically long and the upper and lower parts of the image are not cut. The pair of left and right concave lenses (wide-angle means) 32L and 32R of the wide-angle adapter 30 cuts the upper and lower parts of the image. A pair of left and right mark holes 31c and 31d are respectively formed in the upper frame 31 at the center of the pair of concave lenses 32L and 32R, and a red filter (optically) is formed in the right mark hole 31d. Means) f_RHowever, the left mark hole 32c has a green filter (optical means) f._LAre built in. For example, as shown in FIG. 8 (A), a green mark M is displayed at the center of the left and right images when projected on a monitor._LAnd red mark M_RWill enter. Each mark M_L, M_RIs very useful as explained below.
[0028]
First, each mark M_L, M_RIndicates the center of the subject at the time of shooting._L, M_RIt is very convenient to adapt to. FIGS. 8B and 8C show a stereoscopic view with the naked eye by a parallel method or the like without using a viewer such as the glasses with shutters 70. FIG. 8B shows the left and right images projected on the small liquid crystal monitor 60 ′, which is viewed with the naked eye stereoscopic view by the so-called parallel method (the line of sight looking away, that is, the line of sight near the parallel). At this time, each filter f on the front of the frame portion 31 of the wide-angle adapter 30_L, F_RThat is, each mark M_L, M_RIf the eyes of both eyes are directed so that green and red overlap each other, stereoscopic parallel viewing can be performed at that time. In this way, each mark M_L, M_RCan be used for stereoscopic viewing.
[0029]
FIG. 8C shows a video image once printed on a postcard-sized paper P using a video printer (not shown) and stereoscopically viewed as a stereoscopic photograph. Again, each mark M_L, M_RIs useful for stereoscopic viewing. Where each mark M_L, M_RIs put in the frame part 31, but it may be put in the image. Although the mark is optically inserted here, the mark may be inserted by image processing electrically. Moreover, although the color is red or green, it may be simply white (may be changed as necessary).
[0030]
[Third Embodiment]
9 and 10 show a third embodiment. An optical adapter device 20 'for stereoscopic photography is detachably attached to the filter mounting screw portion 11 of the video camera device 1 of the third embodiment. On the rear side (screw part 25 side) in the lens barrel 21 ′ that is an image capturing part of the optical adapter device 20 ′, a flat surface is used instead of the planar reflecting mirrors 22L, 22R, 24L, and 24R in the above embodiments. A wedge-shaped edge prism (triangular prism) 26 'is disposed (as viewed from above), and a concave lens (wide-angle lens) 32 is disposed on the front side of the lens barrel 21'. The lens barrel 21 ′ and the mounting screw portion 25 can be rotated by a joint portion 26 and can be adjusted in the horizontal direction.
[0031]
As a method for taking a stereoscopic photograph using an edge prism, a technique disclosed in Japanese Patent Application Laid-Open No. 59-30390 disclosed in the prior art is known. This technique has no problem since the captured image is directly projected on a television receiver or the like and stereoscopically viewed. However, in this embodiment, since the image is magnified and projected, the concave lens 32 is provided on the lens barrel 21 'as a means for widening the angle. Built in. Since the edge prism 26 'is arranged on the rear side of the lens barrel 21', the external appearance is the same as that of a normal conversion lens. Therefore, as in the first and second embodiments, the three-dimensional structure is very solid. There is an advantage that stereoscopic shooting is possible without feeling like shooting a video, and without being noticed by people around you.
[0032]
Further, in the method using the edge prism 26 ', two left and right images having a certain angle with respect to the concave lens 32 are projected. For example, an angle that can express a stereoscopic effect well in 2 to 5 m for indoor use. If it is set to, there may be a disadvantage that the stereoscopic effect does not appear well outdoors. A solution to this problem is a fourth embodiment shown in FIGS. 11 to 13 described later.
[0033]
[Fourth Embodiment]
11 to 13 show a fourth embodiment. An optical adapter device 20 ″ for stereoscopic photography is detachably attached to the filter mounting screw portion 11 of the video camera device 1 of the fourth embodiment, and the third embodiment. In the embodiment, it is possible to adjust what the bending angle of the projection light by the edge prism 26 ′ is constant. That is, the adapter device 20 ″ includes a variable triangular prism (optical member) 26 ″ and the variable triangle. A hood-type holder (image capturing portion) 21 ″ including a prism 26 ″, transparent glass sheets (transparent thin plates) 23 ″ and 23 ″ pasted on the left and right front surfaces of the variable triangular prism 26 ″, and the variable triangle. The prism 26 ″ has a pair of hook portions 27, 27 provided at the upper and lower portions of the front center, and a pair of protrusions 28a, 28a fitted to the pair of hook portions 27, 27. Left side pair of upper and lower pin portions 28b of the over 21 ", and is largely constituted 28b in a square frame-shaped arm 28 pivotably supported in the longitudinal direction through the.
[0034]
As shown in FIGS. 12 and 13, the variable triangular prism 26 "is in the shape of an isosceles triangular edge prism as viewed from above. That is, the variable triangular prism 26" is formed on the left, right front and back surfaces. Three surfaces are constituted by transparent plate glasses 23 ″, 23 ″, 23 ″, and a flexible bellows portion 29 such as silicon rubber is formed between these surfaces. The bellows portion 29 and each of the transparent plate glasses 23 described above. ″ Is sealed, and a colorless and transparent silicone oil (not shown) is enclosed therein. Then, if the large transparent glass plate 23 ″ is fixed to the holder 21 ″ and each hooking portion 27 is moved back and forth, the amount of silicon oil in the inside is constant, so that the angle of the vertex of the variable triangular prism 26 ″ can be varied. That is, the variable triangular prism 26 "is housed in the holder 21", and the transparent glass plate 23 "on the rear side is fixed in the holder 21". The arm 28 movably moved in the front-rear direction via the pins 28b (movable) is moved back and forth by a knob 28A as a projection angle adjusting means slidable outside the right side surface of the holder 21 ″. By moving the knob 28A back and forth, the angle of the apex of the variable triangular prism 26 "can be changed.
[0035]
Further, a ring 25 ″ is rotatably supported on the rear opening side of the holder 21 ″ of the optical adapter device 20 ″. A screw portion 25 is formed on the outer peripheral surface of the ring 25 ″. The screw portion 25 can be screwed to the mounting screw portion 11 of the video camera device 1. Further, an opening 21c serving as an image capturing portion is opened on the entire front surface of the holder 21 ″ of the optical adapter device 20 ″. A wide-angle adapter (wide-angle means) 30 ″ can be fitted in and removed from the opening 21c so as to be freely attached / detached, and can be used integrally with the optical adapter device 20 ″. The wide-angle adapter 30 ″ is composed of a rectangular frame portion 31 and a concave lens (wide-angle means) 32 fitted in an opening portion that is opened entirely on the front side of the frame portion 31.
[0036]
Then, by removing the wide-angle adapter 30 ″ fitted to the front side of the holder 21 ″ of the optical adapter device 20 ″, the video camera for technical use disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 59-30390, Even if the vertex angle of the variable triangular prism 26 ″ is changed according to the purpose, it can be used very conveniently. In addition, the position of the subject and the angle of the prism may be linked to be automatically adjusted in conjunction with an autofocus device of a video camera.
[0037]
As described above, according to each of the embodiments described above, first, the wide angle is first taken in and then the left and right images are taken. Although it seems that the effect is equivalent, in this case, it is necessary to make the left and right video capture sections large enough to cover wide-angle images, etc., which would make the image capture section very large. In each of the above-described embodiments, the image capturing unit can be downsized because the image is first taken after the wide angle.
[0038]
Further, in the field sequential stereoscopic signal as a stereoscopic photograph type 3D stereoscopic image signal, a part of the stereoscopic photograph is cut out and enlarged to form a single image. In the embodiment, first, the wide angle means is used to capture the wide angle, so that the angle of view remains unchanged even when enlarged to create a 3D stereoscopic video signal. In particular, in stereoscopic images, there are some things that compare with the foreground, mid-range, and distant views, and the stereoscopic effect often appears. Shooting has become possible, and powerful stereoscopic images with a wide-angle stereoscopic effect can be obtained.
[0039]
【The invention's effect】
  As described above, according to the first aspect of the present invention, the upper and lower portions of the video that are unnecessary when the right screen and the left screen of the video signal of the stereoscopic photograph type 3D stereoscopic video are cut off are input from the beginning. Since the optical system that does not shine and projects the upper and lower portions is omitted, the optical adapter device can be reduced in size.It is also useful as a guide when performing autostereoscopic viewing.
  According to the second aspect of the present invention, since a wide angle means is used to capture a wide angle first, the angle of view can be maintained even when enlarged to produce a three-dimensional stereoscopic video signal. become. In particular, in stereoscopic images, there are some things that compare with the foreground, mid-range, and distant views, and the stereoscopic effect often appears. Shooting is possible, and a powerful stereoscopic image with a wide-angle stereoscopic effect can be obtained.
[Brief description of the drawings]
FIG. 1 is a perspective view of a video camera device and a 3D stereoscopic video signal conversion device according to a first embodiment of the present invention.
FIG. 2 is a perspective view of a video camera main body of the video camera device, and an optical adapter device and a wide-angle adapter for stereoscopic photography that are attached to and detached from the video camera main body.
FIG. 3 is a block diagram of a stereoscopic system including the video camera device, a 3D stereoscopic video signal converter, a VTR, and a television receiver.
4A is an explanatory diagram of a background shot by the video camera device, FIG. 4B is an explanatory diagram when cutting left and right images shot by the CCD of the video camera device, and FIG. Explanatory drawing of the image | video for left eyes clipped and expanded, (D) is explanatory drawing of the image | video for right eyes clipped and expanded.
FIG. 5 is a perspective view of a video camera main body of a video camera device according to a second embodiment, an optical adapter device for taking a stereoscopic photograph, and a wide-angle adapter attached to and detached from the video camera main body.
FIG. 6 is a perspective view showing a video camera body of the video camera device according to the second embodiment, and a separated state of an optical adapter device for taking a stereoscopic photograph and a wide-angle adapter attached to and detached from the video camera body.
7A is an explanatory diagram of a background shot by the video camera device of the second embodiment, and FIG. 7B is an explanation of cutting left and right images shot by the CCD of the video camera device. FIG. 4C is an explanatory diagram of an image for the left eye that is cut out and enlarged, and FIG. 4D is an explanatory diagram of an image for the right eye that is cut out and enlarged.
8A is an explanatory diagram showing a state in which a video image for the left eye and a video image for the right eye are simultaneously displayed on the screen by the video camera apparatus according to the second embodiment, and FIG. 8B is a diagram based on the parallel method. Explanatory drawing which shows the state of a stereoscopic vision, (C) is explanatory drawing which shows the state of the stereoscopic vision by printing.
FIG. 9 is a perspective view of a video camera device according to a third embodiment and an optical adapter device for taking a stereoscopic photograph that is attached to and detached from the video camera body of the video camera device.
FIG. 10 is a cross-sectional view of a main part of the optical adapter device according to the third embodiment.
FIG. 11 is a perspective view of a video camera body of a video camera device according to a fourth embodiment, an optical adapter device for taking a stereoscopic photograph, and a wide-angle adapter attached to and detached from the video camera body.
FIG. 12 is a perspective view showing a state where the optical adapter device and the wide-angle adapter of the fourth embodiment are separated.
FIG. 13 is an enlarged perspective view of a main part of the optical adapter device according to the fourth embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Video camera apparatus, 20, 20 ', 20 "... Optical adapter apparatus, 21, 21', 21" ... Image capture part, 26 ', 26 "... Triangular prism (optical member), 32, 32L, 32R ... Wide angle Means, 40... 3D stereoscopic video signal conversion device, M_L, M_R…mark.

Claims (2)

This 3D stereoscopic 3D video is based on a 3D 3D 3D video with the video for one eye on the right half of the screen and the video for the other eye on the left half of the screen. The image of the 3D stereoscopic video signal conversion device that cuts out the right screen and left screen of the signal and then converts and enlarges it to the maximum size of the above screen to make it a dedicated video signal for each of the two eyes In the optical adapter device for shooting,
An optical part for taking in the three-dimensional stereoscopic image of the above-mentioned stereoscopic photograph type;
An optical system configured to cut the upper and lower parts of the image that are unnecessary when the right screen and the left screen are cut off ,
A mark indicating the approximate center of the video is disposed at the approximate center of each of the right screen and the left screen in the cut portion of the video that is not necessary for the stereoscopic photo type 3D stereoscopic video. An optical adapter device for video shooting of a 3D stereoscopic video signal conversion device, characterized in that it is configured .   2. The three-dimensional stereoscopic video signal conversion apparatus according to claim 1, wherein wide-angle means for widening the image is arranged in the optical part for taking in the stereoscopic photograph-type three-dimensional stereoscopic video. Optical adapter device for video shooting.

Images