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Proceedings Paper

Error diffusion with blue-noise properties for midtones
Author(s): Pierre-Marc Jodoin; Victor Ostromoukhov
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Paper Abstract

In this contribution, a new error-diffusion algorithm is presented, which is specially suited for intensity levels close to 0.5. The algorithm is based on the variable-coefficient approach presented at SIGGRAPH 2001. The main difference with respect to the latter consists of the objective function that is used in the optimization process. We consider visual artifacts to be anomalies (holes or extra black pixels) in an almost regular structure such as a chessboard. Our goal is to achieve blue-noise spectral characteristics in the distribution of such anomalies. Special attention is paid to the shape of the anomalies, in order to avoid very common artifacts. The algorithm produces fairly good results for visualization on displays where the dot gain of individual pixels is not large.

Paper Details

Date Published: 28 December 2001
PDF: 9 pages
Proc. SPIE 4663, Color Imaging: Device-Independent Color, Color Hardcopy, and Applications VII, (28 December 2001); doi: 10.1117/12.452999
Show Author Affiliations
Pierre-Marc Jodoin, Univ. de Montreal (Canada)
Victor Ostromoukhov, Univ. de Montreal (Canada)

Published in SPIE Proceedings Vol. 4663:
Color Imaging: Device-Independent Color, Color Hardcopy, and Applications VII
Reiner Eschbach; Gabriel G. Marcu, Editor(s)

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