A light compression method that error diffuses image data provided with luminance and chrominance channels. During error diffusion, a higher number of bits are allocated to the luminance channel. A decompression method for the image data based on sigma filtering is also provided. By manipulating the...http://www.google.com.tw/patents/US7991235?utm_source=gb-gplus-share專利 US7991235 - Light compression for color images using error diffusion
