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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. 24, Iss. 11 — Nov. 1, 2007
  • pp: 3418–3426

Maximum likelihood difference scaling of image quality in compression-degraded images

Christophe Charrier, Laurence T. Maloney, Hocine Cherifi, and Kenneth Knoblauch  »View Author Affiliations


JOSA A, Vol. 24, Issue 11, pp. 3418-3426 (2007)
http://dx.doi.org/10.1364/JOSAA.24.003418


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Abstract

Lossy image compression techniques allow arbitrarily high compression rates but at the price of poor image quality. We applied maximum likelihood difference scaling to evaluate image quality of nine images, each compressed via vector quantization to ten different levels, within two different color spaces, RGB and CIE 1976 L * a * b * . In L * a * b * space, images could be compressed on average by 32% more than in RGB space, with little additional loss in quality. Further compression led to marked perceptual changes. Our approach permits a rapid, direct measurement of the consequences of image compression for human observers.

© 2007 Optical Society of America

OCIS Codes
(100.0100) Image processing : Image processing
(330.0330) Vision, color, and visual optics : Vision, color, and visual optics
(330.1690) Vision, color, and visual optics : Color
(330.4060) Vision, color, and visual optics : Vision modeling
(330.5020) Vision, color, and visual optics : Perception psychology
(330.5510) Vision, color, and visual optics : Psychophysics

ToC Category:
Vision, Color, and Visual Optics

History
Original Manuscript: August 20, 2007
Manuscript Accepted: August 20, 2007
Published: October 1, 2007

Virtual Issues
Vol. 2, Iss. 12 Virtual Journal for Biomedical Optics

Citation
Christophe Charrier, Laurence T. Maloney, Hocine Cherifi, and Kenneth Knoblauch, "Maximum likelihood difference scaling of image quality in compression-degraded images," J. Opt. Soc. Am. A 24, 3418-3426 (2007)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-24-11-3418

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