JP2006094458A5 - - Google Patents

Claims (6)

When projecting an image from a projection unit onto a projection surface having an arbitrary curvature, a video signal processing device that applies distortion correction to the projection surface in advance to an input video signal for a flat display surface and applies the distortion correction to the projection unit,
Model creation means for creating a mesh model of the projection surface by inputting variable parameters relating to a prescribed projection surface shape over a plurality of types;
Based on the positional relationship between the observer and the projection means with respect to the projection surface, a correspondence map between the plane display surface and the mesh model of the projection surface is created, and texture mapping coordinates using the correspondence map are used for the plane input image. A video signal processing apparatus comprising: distortion correction means that realizes the distortion correction by applying and generating video again. The model creating means has a function formula related to a prescribed projection surface shape over a plurality of types in advance, selects any one of the prescribed projection surface shapes or a combination thereof, and inputs the variable parameter to obtain the function equation. Create a mesh model of the projection surface based on
The video signal processing apparatus according to claim 1 . 3. The video signal processing apparatus according to claim 1, wherein the prescribed projection surface shape is any one of a part of a spherical surface, a part of a cylindrical surface, or a combination of a plurality of planes. A screen with a wide viewing angle that can be mirror-reflected in a spherical shape with a concave surface facing the viewer,
Video creation means provided at each of the left and right channels respectively, and having at least decoding means for sequentially decoding the compressed video video files of the left and right channels and converting them into video signals of the video,
Synchronization means for controlling the video creation means and establishing synchronization between the video signals of the left and right channels;
The video signal processing apparatus according to any one of claims 1 to 3, wherein distortion correction for the screen is sequentially performed on the video signals of the left and right channels,
Projecting means for projecting the video signals from the respective video signal processing devices onto the screen as polarized images orthogonal to each other,
A virtual reality comprising: a video selection means that is worn by the observer and displays a stereoscopic video image by transmitting a polarized image corresponding to each of the left and right eyes and causing the observer to synthesize and recognize the image. Feeling generation device. The synchronization means includes a synchronization management unit that executes a time management loop process and a synchronization management process,
Each of the video creation means has two frame memories that can be used by sequentially switching between output to the projection means and writing of the decoded video signal,
The decoding means includes a synchronization management unit that executes a synchronization management process, a decompression unit that executes a movie file decompression process, and a playback display unit that executes a video display process, and sequentially decodes the video signals of the left and right channels. 5. The virtual signal according to claim 4 , wherein the video signal is converted into a video signal of the moving image and controlled by a time management loop process and a synchronization management process of the synchronization means to establish synchronization between the video signals of the left and right channels. Reality generator. The computer constituting the synchronization means in claim 5 executes the synchronization management process for acquiring the current time and the time management loop process for distributing the current time to each decoding means when a predetermined time has elapsed. Let
The computer that constitutes the video creation means according to claim 5 receives the current time, returns a receipt indicating the reception to the synchronization means, updates the reference time, and sends the reference time to the movie file decompression process. The video display process to be distributed and the reference time are acquired and compared with the time at which the currently acquired frame is to be displayed. As a result, if the delay is within 2 frames, the frame data is updated and the frame buffer is updated. The movie file decompression process for notifying the video display process of the address of the video file and the video display process for notifying the video display process that the frame data has been updated. Acquire data as a video signal The video display process for notifying the movie file decompression process of completion of the frame data update, and drawing the video signal on the one not selected on the output side of the two frame memories provided in the video creation means; Upon receipt of the data update completion notification, the movie file decompression process for acquiring new frame data is executed,
Further, the computer constituting the synchronization means in claim 5 executes the synchronization management process for transmitting a swap synchronization message to the video display process upon receipt of the receipt,
In response to the swap synchronization message, the two frame memories are swapped in response to the swap synchronization message, a receipt is returned to the synchronization management process of the synchronization unit, and the current time again A computer-readable recording medium storing a program for executing a video display process waiting for reception.