| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an image correction method which can realize a high speed distortion correction process and natural motion expression of the images. <P>SOLUTION: The image distortion correction method records observation conditions such as a position of a observer, projection conditions such as a position of a projector, direction, image angle, and an aspect ratio, etc., and a polygon mesh representing a screen shape as parameters in the preparation process. As processing at the time of projection, an inputted original image is calculated by a predetermined calculation formula including the parameters and is subjected to a perspective transformation, coordinate system after the perspective transformation is transformed into a texture coordinate system, a corrected image is drawn on a frame buffer by texture mapping function of a graphic accelerator using the texture coordinate system, and the correction image is output to the projector as an image signal. <P>COPYRIGHT: (C)2004,JPO |
