用于消除色阶的真彩转16位图象的算法，效果比Floid-Steinberg等误差扩散抖动法要好，但有一点蒙尘的感觉。,Histogram for the elimination of true color to 16 images algorithms, effects, etc. than Floid-Steinberg error diffusion dithering method is better, but have the feeling that the dust.