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Proceedings Paper

Robust estimation of print mottle
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Paper Abstract

Mottle is a common defect in printing. Mottle evaluation is crucial in image quality assessment and system diagnosis. In this paper, we present a new automatic mottle estimation method which improves the existing technologies in two aspects. First, a modified mottle noise frequency range is proposed, which further separates the banding and streak spectra from mottle spectrum. Second, a robust estimation algorithm is introduced. It is less sensitive to the outliers that may appear in the measurement. These outliers include other defects within the mottle frequency range, such as spots, or defects outside of mottle frequency range, but are strong enough that can not be completely eliminated by normal spatial filtering.

Paper Details

Date Published: 28 January 2008
PDF: 7 pages
Proc. SPIE 6808, Image Quality and System Performance V, 680808 (28 January 2008); doi: 10.1117/12.764855
Show Author Affiliations
Zhigang Fan, Xerox Corp. (United States)
Wencheng Wu, Xerox Corp. (United States)
Edul N. Dalal, Xerox Corp. (United States)
Rene Rasmussen, Xerox Corp. (United States)

Published in SPIE Proceedings Vol. 6808:
Image Quality and System Performance V
Susan P. Farnand; Frans Gaykema, Editor(s)

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