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Proceedings Paper

Error diffusion with vivid color enhancement and noise reduction
Author(s): Joseph Shou-Pyng Shu
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Paper Abstract

A novel error diffusion technique with vivid color enhancement and noise reduction has been developed to achieve high quality, high resolution color ink jet printing. Conventional error diffusion produces halftones with worm-like and salt-and-pepper-like noises. Each halftoned pixel may be one of the 8 colors: RGBCMYKW. Depending on the printing device characteristics (including printer dot size, registration, resolution, ink, and media), color interference between the 8 possible colors may occur. This color interference produces visible salt-and-pepper noise. In order to remove the noise, we classify the 8 colors into three clusters. Each cluster contains a set of harmonic colors. We exclude non-harmonic color halftones to be mixed. Any smooth color area in an input image uses a cluster (i.e., a set of colors) to make the halftone color more vivid and to minimize the non-harmonic color interference. In the error diffusion processing, inter-frame information between RGB plans are used to enforce the color cluster rules to achieve no salt-and-pepper noise and more vivid color halftones. Experimental results are provided to show the effectiveness of the technique.

Paper Details

Date Published: 22 April 1996
PDF: 7 pages
Proc. SPIE 2657, Human Vision and Electronic Imaging, (22 April 1996); doi: 10.1117/12.238744
Show Author Affiliations
Joseph Shou-Pyng Shu, Epson Palo Alto Lab. (United States)

Published in SPIE Proceedings Vol. 2657:
Human Vision and Electronic Imaging
Bernice E. Rogowitz; Jan P. Allebach, Editor(s)

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