color halftoning, error diffusion, minimal brightness variation criterion Error Diffusion is a high-performance halftoning method in which quanitization errors are diffused to "future" pixels. Originally intended for grayscale images, it is traditionally extended to color images by Error-Diffusing each of the three color planes independently (separable Error Diffusion). In this report we show that adding to the Error Diffusion paradigm a simple design rule which is based on certain

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... cs of human color perception results in a novel color halftoning algorithm, whose output is of considerable higher quality compared to separable Error Diffusion. The algorithm presented requires no additional memory and entails a reasonable increase in run-time.