JPH09289656A - Video display system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device making an observer enjoy presence as if actually being in a certain space by turning the video images of a video display system to three-dimensional stereoscopic video images. SOLUTION: The projection screen 1 of a rear projection type is arranged as a video display device on the six surfaces of front, rear, left and right four peripheral side faces, a ceiling and a floor surface to the observer (a).For the projection screens of fix surfaces, the total of six projectors 21-26 one each for the respective ones, are arranged on the outer sides of the projection screens 11-16. The projectors 21-26 are controlled by a controller as a video display controller and the images of different directions sent from the reproducing device of image signals are timewisely synchronously projected on the respective screens. At the time of video photographing, the video images are photographed by cameras turned into respective front, rear, left, right, up and down directions.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display system which allows a viewer to experience an actual presence in a certain space by displaying a three-dimensional stereoscopic image on an image display device in a projection room. .

[0002]

2. Description of the Related Art Conventionally, various video software has taken a method of shooting a video using a live-action camera and projecting the video on a flat screen installed in front of a viewer. However, as a matter of course, with this method, the projected image is flat, and a realistic sensation of actually existing in a certain space cannot be obtained. Therefore, recently, in order to give a stereoscopic effect to a two-dimensional image projected on a flat screen, a stereoscopic image that uses two binocular parallax effects of a human being is used by simultaneously capturing images with two cameras. It's starting to happen. In addition, the projection screen has been devised so that a projection screen having a curved surface has been used in order to give a more realistic feeling.

[0003]

These video reproduction systems can give a feeling of the image approaching to the front, for example, when a stereoscopic image utilizing the effect of human's binocular parallax is projected. With a projection screen having a curved surface, it is possible to reproduce an image within a certain range viewed by a viewer. However, in any of these video playback systems, the viewer sits in front of the screen, so the video only shows a video with a certain limited field of view, and the more you put yourself in the actual space. I couldn't feel the presence of him. In addition, for example, when a screen having a curved surface such as a omnidirectional screen is used, a projection dome specially designed for installing this is required, which is very expensive. Therefore, it is an object of the present invention to provide a video display system that allows a viewer to experience a realistic sensation of being in a certain space without using a special photographing device or a projection dome.

[0004]

According to the present invention, there is provided a projection room for accommodating a video viewer, and at least the front surface of the viewer among the four circumferential side surfaces, the ceiling surface and the floor surface constituting the projection room. Video display devices provided on the three left and right side surfaces,
In a video display system comprising a video display control device for controlling the video display device and displaying a video synchronized by the video display control device on the video display device, the video is a three-dimensional stereoscopic video. Characterize.

Further, the above-mentioned image is characterized in that it is a three-dimensional three-dimensional image in a three-plane direction viewed from a certain viewpoint.

Further, the above-mentioned video is a video generated by a computer graphics technique.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a video display system according to the present invention will be described in detail with reference to the drawings. FIG. 1 is an explanatory perspective view showing the whole of an embodiment of a video display system according to the present invention. In this display system, images are displayed on all surfaces surrounding the projection room for creating a virtual space, that is, four front and rear, left and right side surfaces (wall surfaces), a ceiling surface and a floor surface with respect to the viewer a. Rear projection type projection screen 1 as a device
1 to 16 are arranged. Although not shown, the projection screens 11 to 16 are arranged in a normal room.

On the six-sided projection screens, a total of six projectors 21 to 26 are arranged outside the projection screens 11 to 16, one for each. The projectors 21 to 26 are controlled by a controller 41 (not shown) as a video display control device, and temporally display images in different directions, which are sent from a reproduction device of an image signal, not shown, on each screen. It is designed to project in synchronization with.

At the time of image capturing, the image is captured by cameras oriented in the front, rear, left, right and up and down directions. For example, an image of a train approaching from the left is captured by the camera on the left side of the photographer, and when the train passes in front of the photographer's eyes, it is captured by the camera in front of the photographer. When the train runs to the right, the camera on the right side of the photographer captures the footage. When the video image thus taken is displayed by the present system, the viewer a first looks at the projection screen 13 on the left side, then moves the viewpoint to the projection screen 11 on the front side, and finally the viewpoint on the projection screen 14 on the right side. If you move it, you can feel as if you were actually at the shooting site.

The six projection screens 11 to 1 are also provided.
A three-dimensional stereoscopic image may be used for the image expanded in 6. As a result, the viewer a feels, for example, that the train floats up from the front projection screen 11 and is approaching himself, and immediately after looking at him, he looks back behind him,
By looking into the screen 12 at the rear, you can feel the train moving away from you. At this time, since the seams of the projection screens 11 to 16 are hidden behind the image raised from the projection screen and the viewer does not focus on the seams, the seams are spatially continuous regardless of the presence of the seams. It is possible to watch the video that you made. And if such a stereoscopic image is combined with all six projection screens, the sense of presence will be unimaginable.

As can be seen from the above example, the projection screen does not necessarily have to have six faces. That is, when the train passes in front of the eyes, the front face and the left and right side faces of the viewer are arranged on three faces, and when the train approaches and departs, the front face and the left side and the right side of the observer are arranged on the opposite two faces. It is possible to express the realism of. Therefore, it may be arranged at least on the front surface and the left and right side surfaces of the viewer.

Next, another embodiment in which computer graphics is used as an image will be described. FIG. 2 is a block diagram showing the configuration of the video display system in this embodiment. In this embodiment, it is used as a video simulation system.
The images projected on the projection screens 11 to 16 are generated by the image generating devices 31 to 36 dedicated to the four circumferential surfaces, the ceiling surface, and the floor surface, respectively. Image generation devices 31 to 36
The basic shape data necessary for the generation of the simulation image, that is, the shape, color, reflectance, etc. are input in advance, and the viewpoint is set inside the projection room by the computer graphics method from these data. Images are generated in six directions when placed. The six images generated in this way are synchronized by the controller 41 so that no time shift occurs, and the projectors 21 to 21 are connected.
The image is projected onto the projection screens 11 to 16 by 26. In other words, the image generated by the right-side simulation generation device 34 provided for simulating the landscape to be developed on the right side of the viewer a is projected on the projection screen 14 on the right side of the viewer.

The viewer is located in the center of the projection room and can enjoy the virtual experience of the virtual space by looking into the projection screen in an appropriate direction depending on the contents of the image. For example, in the case of a scene in which an airplane approaches from the left, passes in front of the viewer's eyes, and flies away in the right direction, first see the screen 13 on the left, and then gradually view the screen 11 on the front. After the airplane passes in front of you, you can gradually move to the right screen 14 and change the viewing direction according to the movement of the airplane.

Further, the 6-sided projection screens 11 to 1
A three-dimensional stereoscopic image may be used for the simulation image developed in 6. By doing so, the viewer, for example, feels that the airplane is approaching from the front projection screen 11 due to the effect of the stereoscopic image, and after approaching in front of him,
If you look back behind and look into the projection screen 12 behind you, you can feel the feeling of going far away. If you combine three-dimensional images on all six sides and project them, the sense of reality will be unimaginable. As described above, the projection screen does not necessarily have to have six surfaces.

Next, a case will be described in which a computer graphics is used to generate an image in real time when a viewer's viewpoint moves. Each of the simulation image generation devices 31 to 36 has basic shape data necessary for generating the flight simulation image in advance, that is,
The shape, color, reflectance, etc. are entered. At the time when the viewer sits in front of the control device 61, the scenery of the departure point is generated by the simulation image generation devices 21 to 26 and displayed on the projection screens 11 to 16 by the corresponding projection projectors 21 to 26. .

When a viewer operates a steering wheel, an accelerator, a brake or the like provided on the control device 61, the control information is sent to the control information analysis device 51. Control information analyzer 51
Then, based on the control information sent, the motion data (movement, viewpoint and gazing point, perspective angle, etc.) is developed and calculated in six directions of front, rear, left, right, up, and down, and the corresponding simulation image generation devices 31 to 32 are used. Hand over to. The simulation image generation devices 31 to 36 use the respective motion data as parameter information to generate image generation calculation units 311 to 36.
At 1, a simulation image in each viewpoint direction is generated. The controller 41 includes six independent image generation calculation units 31.
The reproduction of the images generated in steps 1 to 361 is synchronized. Upon completion of image generation, each of the image generation calculation units 311 to 361 sends a completion signal to the controller 41. Controller 41
Issues a command to the six simulation image generation devices 31 to 36 to start writing the image data to the image display frame memories 312 to 362. Each of the frame memories 312 to 362 has a D / A converter 313.
To 363 are connected, and the output analog video signal is input to each of the projectors 21 to 26 and displayed on the projection screens 11 to 16. The control device 61
The control signal transmitted from the simulation image generation device 31 to 36 is transmitted in units of 1/30 seconds, for example.
Since images are generated in real time, continuous, smooth moving image display is possible.

By providing the above-mentioned interactive simulation mechanism, it is possible to freely change the contents of the image development by the operation of the observer, instead of the one in which the observer conventionally gives a single image of the development. Therefore, it is possible for the viewers to feel as if they are experiencing it, and there is the merit that they will not get tired of the content at one time.

Although the embodiments of the display system of the present invention have been described above, the present invention is not limited to the above-mentioned embodiments, and various modifications can be made without departing from the spirit of the present invention. is there. For example, in the present embodiment, the image display device is a rear projection type projection screen, but a thin flat plasma display or the like may be used to save space or reduce installation costs. In this case, the plasma display can be directly installed on the wall surface, the ceiling surface, or the floor surface, so that the installation work becomes very easy.

Further, in the present embodiment, for the sake of explanation, the image generation calculation section is provided independently for each projection screen, but one image generation calculation section generates images corresponding to six planes, Image data may be sent to each projector.

Further, in the present embodiment, the projection screens are arranged on all the surfaces surrounding the projection room arranged in the room, but the present invention is not limited to this. As in the past, the viewer simply sits in front of the screen, and it should be arranged so that the viewer can experience the sense of being in an actual space without having an image with a limited field of view. Good. That is, as described above, among the six surfaces surrounding the projection room, they may be arranged on at least the three surfaces of the viewer's front surface and left and right side surfaces.

As described above, according to the video display system of the present embodiment, the viewer can see the video from all surrounding directions, so that the viewer can feel as if he / she were actually in a certain space. You can taste. Moreover, since it is not necessary to use a special photographing device or a projection dome, and a projection screen can be installed in a normal room, it is possible to perform a realistic simulation at a low cost.

Further, by generating a simulation image by computer graphics, even if the actual shooting is difficult or the landscape does not exist, the viewer can experience as if he / she were in the space. It becomes possible to do.

Further, if a movement information input means for a viewpoint, which is a base point of image generation, is provided and an image is generated based on movement information from the movement information input means, the contents of the image developed by the viewer's operation. Since it is possible to freely change the image, it is possible to interactively change the image, and it is possible to perform a simulation as if the viewer were actually moving in a certain space.

[0024]

As described above, the present invention has the following effects. 1) It is not necessary to use a special photographing device or a projection dome, and it is only necessary to dispose the projection screen in a normal room. Therefore, it is possible to reproduce and create a space with a sense of reality at low cost. 2) Since the provided images are three-dimensional stereoscopic images,
Since the image is floated and observed, the seam of the image display device on each surface is not observed, and a spatially continuous image can be viewed. 3) The image is a synchronized image that is projected on at least three surfaces, and is a three-dimensional three-dimensional image in the direction of the three surfaces viewed from a certain point of view, so it is physically endlessly realistic. It is possible to reproduce and create images. 4) Since the image is an image generated by a computer graphics method, it is possible to reproduce and create a space even if it is difficult to actually photograph or even a landscape that does not exist.

[0025]

[Brief description of drawings]

FIG. 1 is an explanatory perspective view showing an entire image display system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a video display system according to another embodiment. a-viewer 11-front projection screen 12-rear projection screen 13-left projection screen 14-right projection screen 15-top projection screen 16-bottom projection screen 21-front projection projector 22-rear projection projector 23-left projection Projector 24 ─ Right side projection projector 25 ─ Top projection projector 26 ─ Bottom projection projector 31 ─ Front simulation image generation device 32 ─ Rear simulation image generation device 33 ─ Left side simulation image generation device 34 ─ Right side simulation image generation device 35 ─ Upper surface simulation image generation device 36 --Lower surface simulation image generation device 31 --Front surface simulation image generation device 41 --Controller 51 --Control information analysis device 61 --Control device

Continuation of front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location H04N 5/74 G06F 15/62 360

Claims (3)

[Claims] 1. A projection room for accommodating an image viewer, and among the six sides of the four-circle side surface, the ceiling surface, and the floor surface constituting the projection room, the projection room is provided on at least three front and left and right side surfaces of the viewer. And a video display control device for controlling the video display device, wherein the video display system displays the video synchronized by the video display control device on the video display device. An image display system characterized by being a stereoscopic image. 2. The image display system according to claim 1, wherein the image is a three-dimensional three-dimensional image in three directions viewed from a certain viewpoint. 3. The video display system according to claim 1, wherein the video is a video generated by a computer graphics technique.