Supplementary Material Page
Computer Graphics Forum 2010
Abstract We introduce a new global approach for image dithering, stippling, screening, and sampling. It is inspired by the physical principles of electrostatics. Repelling forces between equally charged particles create a homogeneous distribution in flat areas, while attracting forces from the image brightness values ensure a high approximation quality. Our model is transparent and uses only two intuitive parameters: One steers the granularity of our halftoning approach, and the other its regularity. We evaluate two versions of our algorithm: A discrete version for dithering that ties points to grid positions, as well as a continuous one which does not have this restriction, and can thus be used for stippling or sampling density functions. Our methods create very few visual artefacts, reveal favourable blue-noise behaviour in the frequency domain, and have a lower approximation error under Gaussian convolution than state-of-the-art methods.
Welcome to the supplementary material page for our paper Electrostatic Halftoning which is published in
Computer Graphics Forum, Volume 29, Issue 8, pages 2313-2327, December 2010.
The aim of these pages is to provide the reader with additional information that goes beyond the paper's scope, but which might be useful for a deeper understanding. Please choose one of the following topics: