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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Stephen A. Burns
  • Vol. 23, Iss. 2 — Feb. 1, 2006
  • pp: 247–257

Processing halftone color images by vector space methods

Li Liu, Yongyi Yang, and Henry Stark  »View Author Affiliations


JOSA A, Vol. 23, Issue 2, pp. 247-257 (2006)
http://dx.doi.org/10.1364/JOSAA.23.000247


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Abstract

The reproduction of color images by color halftoning can be characterized by the Neugebauer model/equation. However, the Neugebauer equation is not easy to solve because of the highly nonlinear relationship between the underlying Neugebauer primaries and the colorants. We attempt to solve the Neugebauer equation by vector space methods. The proposed method of solution is applicable to any number of colorants, although our experimental results are confined to the CMY and CMYK cases. Among the constraints we consider are those related to a bound on the permissible amount of total ink and a bound on the total cost of applying colorants to achieve a satisfactory level of color reproduction. Our results demonstrate that the vector space method is a feasible approach for solving for the required amounts of colorants in the constrained color halftoning problem.

© 2006 Optical Society of America

OCIS Codes
(070.6020) Fourier optics and signal processing : Continuous optical signal processing
(100.2810) Image processing : Halftone image reproduction
(330.1690) Vision, color, and visual optics : Color

ToC Category:
Image Processing

History
Original Manuscript: April 1, 2005
Revised Manuscript: June 16, 2005
Manuscript Accepted: June 18, 2005

Virtual Issues
Vol. 1, Iss. 3 Virtual Journal for Biomedical Optics

Citation
Li Liu, Yongyi Yang, and Henry Stark, "Processing halftone color images by vector space methods," J. Opt. Soc. Am. A 23, 247-257 (2006)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-23-2-247


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