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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

  • Vol. 16, Iss. 9 — Sep. 1, 1999
  • pp: 2151–2162

Objective quality measures for halftoned images

Fredrik Nilsson  »View Author Affiliations


JOSA A, Vol. 16, Issue 9, pp. 2151-2162 (1999)
http://dx.doi.org/10.1364/JOSAA.16.002151


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Abstract

Digital halftoning algorithms can produce results of very different quality and characteristics. To evaluate and improve the algorithms, it is important to have robust image quality measures. We propose a method to evaluate objectively the quality of halftoned images. The method is capable of evaluating any kind of monochrome original and is not limited by the choice of halftoning method. To perform the evaluation with respect to the perception of printed halftones, we use models for dot gain in prints and the human visual system. The main contribution and novelty of the method is an adaptive filter used to separate the halftone characteristics from the information about the original in the halftoned image. This approach facilitates the evaluation of the halftoned image’s resemblance to the original as well as of the characteristics of the halftoning method.

© 1999 Optical Society of America

OCIS Codes
(100.2810) Image processing : Halftone image reproduction
(100.2960) Image processing : Image analysis
(100.3010) Image processing : Image reconstruction techniques
(110.3000) Imaging systems : Image quality assessment

History
Original Manuscript: August 31, 1998
Revised Manuscript: February 22, 1999
Manuscript Accepted: February 22, 1999
Published: September 1, 1999

Citation
Fredrik Nilsson, "Objective quality measures for halftoned images," J. Opt. Soc. Am. A 16, 2151-2162 (1999)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-16-9-2151

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