| 摘要 |
A method of compressing a color image is provided. The color image comprises color data for a plurality of pixels. The method includes the step of obtaining red, green and blue pixel values of an object of interest in the image. A calculation is made of the complement of the red, green and blue values of the object of interest. Transformation coefficients are calculated which transform the complements of red, green and blue values of the object of interest into representations in a transformation color space. The transformation coefficients are applied to all the pixels in the image to thereby obtain a transformed data set representing the image having componen ts along three mutually orthogonal axes (A, B and C herein) in a three- dimensional transformed color space. The transformed data set is scaled in accordance with the color quantization used in the system; e.g., the A, B an d C values are between 0 and 255 for an 8 bit quantization. |
