| 摘要 |
A method for rapid color keying of color video images using individual color component Look-Up-Tables (LUTs), assigned, storing, and used for retrieving, unique sets of predetermined values, for calculating pixel transparency values of input image pixels of a color video input image, for rapidly generating output image pixels of a color video output image including selectively keyed out or transparent pixels. Pre-determined values of the individual color component LUTs are positive integer values, positive non-integer values, and zero. Particular sets of pre-determined values account for high tolerance to changes in lighting, high tolerance of color brightness, and/or, for mixing colors such as for generating smooth edges, of input image pixels of the color video input image. Optionally, processing of mathematical operations performed on the sets of the pre-determined values of the individual color component LUTs are rapidly performed by a hardware acceleration device for further decreasing computational load placed upon a data processor performing color keying of the color video input image, thereby providing a relatively simple, rapid, and cost effective method for color keying of color video images. |
