20 April 1995 Error diffusion with delayed decision
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Abstract
A new halftoning algorithm is proposed that incorporates the concept of delayed decision in error diffusion. This algorithm is similar to a recently proposed tree coding halftoner in that both examine at each pixel location a neighborhood of future (with respect to the scanning direction) pixels before deciding the value of the current output pixel. Because of the feedback in the error diffusion process, one can reduce the size of the 'look ahead' window compared to a typical tree-coding halftoner, resulting in a relatively low complexity. It is shown that this algorithm improves the quality of halftone images compared to those generated by traditional error diffusion.
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Ping Wah Wong, "Error diffusion with delayed decision", Proc. SPIE 2411, Human Vision, Visual Processing, and Digital Display VI, (20 April 1995); doi: 10.1117/12.207538; https://doi.org/10.1117/12.207538
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KEYWORDS
Diffusion

Halftones

Distortion

Binary data

Algorithm development

Image processing

Feedback loops

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