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Proceedings Paper

Modeling dot area coverage of halftone printing
Author(s): Huanzhao Zeng
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Paper Abstract

An approach to optimize dot area coverage is presented. It improves the color prediction accuracy for printer color modeling using Neugebauer narrow-band color mixing model. The Neugebauer colorimetric quality factor (CQF) is applied to integrate dot areas calculated from Neugebauer narrow- band color mixing model. However, simply using CQF to optimize dot area often results in very noisy dot areas. The noise comes from some spectral bands where measured spectral reflectance of the color patch is higher than the measured spectra reflectance of the paper white. To eliminate this kind of noise, the CQF weighting filter approach is modified. The simplest approach is to use Neugebauer CQF weighting but not to use dot areas in the bands where the spectral reflectances of color patches are very close to the spectral reflectance of the paper white. Another approach is to use the spectral reflectance differences between the paper white and the 100% ink coverage as the weighting of this ink channel. The third approach (most effective one) is to combine (multiply) the weightings generated from the first and the second approaches.

Paper Details

Date Published: 21 December 1999
PDF: 7 pages
Proc. SPIE 3963, Color Imaging: Device-Independent Color, Color Hardcopy, and Graphic Arts V, (21 December 1999); doi: 10.1117/12.373416
Show Author Affiliations
Huanzhao Zeng, Peerless Systems Corp. (United States)

Published in SPIE Proceedings Vol. 3963:
Color Imaging: Device-Independent Color, Color Hardcopy, and Graphic Arts V
Reiner Eschbach; Gabriel G. Marcu, Editor(s)

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