Robust Halftoning with Green-Noise

Green-noise halftoning is a stochastic halftoning technique where the minority pixels of a binary dither pattern form homogeneously distributed pixel clusters. While clustering pixels increases its visibility, green-noise reduces the perimeter-to-area ratio of printed dots, thereby reducing the effects of printer distortions such as dot-gain and dot-loss. Using a stochastic dot model, several techniques are introduced for improving the spatial resolution of error diffusion with output-dependent feedback, a commonly used technique for generating green-noise halftone patterns.