Share Email Print
cover

Proceedings Paper

Uniform rosette for moire-free color halftoning
Author(s): Shen-Ge Wang
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

By selecting halftone frequencies from high-order harmonics of two common rosette fundamentals for all color separations, a true moiré-free color halftoning can be achieved. With such screen configurations, the interference between any two frequency components, fundamentals or high-order harmonics, of different colors will also result in a linear combination of the two rosette fundamentals. Thereby, no visible interference, or moiré, at all will be shown in the output. The halftone outputs are two-dimensionally repeated patterns, as visually pleasant uniform rosettes. The uniform-rosette configurations can be implemented by single-cell non-orthogonal halftone screens for digital halftoning. Unlike "dot-on-dot" screening, or using one screen for all colors, uniform-rosette halftoning is robust to mis-registration between color separations. Several designs of uniform-rosette halftone screens have been successfully applied to Xerox iGen3 color printers for high-quality color reproduction.

Paper Details

Date Published: 29 January 2007
PDF: 11 pages
Proc. SPIE 6493, Color Imaging XII: Processing, Hardcopy, and Applications, 64931E (29 January 2007); doi: 10.1117/12.705228
Show Author Affiliations
Shen-Ge Wang, Xerox Innovation Group (United States)


Published in SPIE Proceedings Vol. 6493:
Color Imaging XII: Processing, Hardcopy, and Applications
Reiner Eschbach; Gabriel G. Marcu, Editor(s)

© SPIE. Terms of Use
Back to Top