| 摘要 |
<p>A display pixel range between a display start position (STA) and a display end position (EDA) of a distortion corrected image (CF) is determined on each horizontal line of the image forming section (IF), based on horizontal correction parameters representing distortion-correction amounts at left- and right-sides of the distortion-corrected image to be supplied to an image forming section for forming an image to be projected onto a screen (30), and a first relation between each pixel within the display pixel range and each pixel in the original image (MF) is determined. A display line range between a display start line and a display end line of the distortion corrected image is also determined on the image forming section, based on vertical correction parameters representing distortion-correction amounts in the vertical direction of the distortion-corrected image, a second relation between each line within the display line range and each line in the original image (MF) is determined. The distortion-corrected image is produced from the original image according to the first and second relations. This allows easy correction of image distortion due to tilt projection of images onto the screen. <IMAGE> <IMAGE></p> |
