| 摘要 |
PURPOSE: To obtain a digital video special effector, capable of generating an illumination effect with high cost efficiency and few alias distortions. CONSTITUTION: When an input video pixel is stored in memory 13, selectively addressed to the memory according to a function to decide an object surface and an output pixel to represent an original video which is mapped on the object surface is generated, intensity of the original pixel is corrected before the output pixel is written in the memory by a writing side illumination effect processor 19. The original video is divided into many tiles, and mapping of corner of the tiles to the object surface is calculated 32 and vertical lines to respective pixels are calculated. A scalar product of the vertical lines is calculated, an illumination intensity correction coefficient is generated 33 along with the other coefficients, and the illumination effect processor is controlled by the coefficient. |
