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传承不泥古，创新不离宗。中医药是传统的，也是现代的；中医药是中国的，也是世界的。几千年来，中医药不仅为中华民族繁衍昌盛作出卓越贡献，也对世界文明进步产生深远影响。中医药是我国独特的卫生资源，需要代代守护、传承精华，也需要与时俱进、守正创新。
Visual representation of an RGB colour cube that has been equally divided into 216 coloured boxes (6 levels along each axis).
This time, before we perturb the input image, we take the value given by the threshold matrix and divide it by , where is the number of levels for each colour component. As a result, each pixel is perturbed just enough to cover the minimal distance between two colours in the palette. Since the entire palette is evenly distributed across colour space, we only need to modify the range of perturbation along each axis. The dithering equation then becomes: