Moving beyond just black and white towards full-colour variable palettes presents another set of problems. Taking the methods presented above and quantising an image using an arbitrary colour palette reveals that error-diffusion is also better at preserving colour information when compared to ordered dithering.
戴尔科技单季营收利润创历史新高，宣布现金股息上调20%
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除夕夜，福建沿海的天还没完全黑透，鞭炮就一挂接着一挂响起来了，红纸屑铺满水泥地。有人按照习俗，在门前燃起干柴堆，炭火噼啪作响，火苗蹿得老高。