Analysis of Moire Patterns in Non-Uniformly Sampled Halftones

Authors:
Xiangdong Liu;Roger Ehrich
Affiliations:
-;-
Venue:
WACV '96 Proceedings of the 3rd IEEE Workshop on Applications of Computer Vision (WACV '96)
Year:
1996

Citing 0
Cited 2

Adaptive-Hierarchical-Filtering Technique for High-Quality Magazine Image Reproduction

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Adaptive-hierarchical-filtering technique for high-quality magazine image reproduction

Journal of VLSI Signal Processing Systems

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Abstract

In this paper we analyze the moire patterns in halftone images scanned by a popular commercial scanner. We show that the non-uniform sampling scheme employed by the scanner introduces extra aliasing components compared to uniform sampling and thus complicates the moire patterns formed. The analysis applies to other scanners that employ non-uniform sampling. We also suggest methods for suppressing the moire patterns in scanned halftones.