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Proceedings Paper

Reducing auto moiré in discrete line juxtaposed halftoning
Author(s): Vahid Babaei; Roger D. Hersch
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Paper Abstract

Discrete line juxtaposed halftoning creates color halftones with discrete colorant lines of freely selectable rational thicknesses laid-out side by side. Screen elements are made of parallelogram screen tiles incorporating the discrete colorant lines. The repetition of discrete colorant lines from one screen element to the next may create auto moiré artifacts. By decomposing each supertile into screen element tiles having slightly different rational thicknesses, we ensure that successive discrete colorant lines have different phases in respect to the underlying pixel grid. The resulting repetition vector is different from one discrete line to the next discrete line of the same colorant. This strongly reduces the original auto moiré artifacts.

Paper Details

Date Published: 4 February 2013
PDF: 9 pages
Proc. SPIE 8652, Color Imaging XVIII: Displaying, Processing, Hardcopy, and Applications, 86520N (4 February 2013); doi: 10.1117/12.2005904
Show Author Affiliations
Vahid Babaei, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Roger D. Hersch, Ecole Polytechnique Fédérale de Lausanne (Switzerland)


Published in SPIE Proceedings Vol. 8652:
Color Imaging XVIII: Displaying, Processing, Hardcopy, and Applications
Reiner Eschbach; Gabriel G. Marcu; Alessandro Rizzi, Editor(s)

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