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Proceedings Paper

Perceptual distortion analysis of color image VQ-based coding
Author(s): Christophe Charrier; Kenneth Knoblauch; Hocine Cherifi
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Paper Abstract

It is generally accepted that a RGB color image can be easily encoded by using a gray-scale compression technique on each of the three color planes. Such an approach, however, fails to take into account correlations existing between color planes and perceptual factors. We evaluated several linear and non-linear color spaces, some introduced by the CIE, compressed with the vector quantization technique for minimum perceptual distortion. To study these distortions, we measured contrast and luminance of the video framebuffer, to precisely control color. We then obtained psychophysical judgements to measure how well these methods work to minimize perceptual distortion in a variety of color space.

Paper Details

Date Published: 4 April 1997
PDF: 10 pages
Proc. SPIE 3025, Very High Resolution and Quality Imaging II, (4 April 1997); doi: 10.1117/12.270046
Show Author Affiliations
Christophe Charrier, Univ. Jean Monnet de Saint-Etienne (France)
Kenneth Knoblauch, Univ. Jean Monnet de Saint-Etienne (France)
Hocine Cherifi, Univ. Jean Monnet de Saint-Etienne (France)

Published in SPIE Proceedings Vol. 3025:
Very High Resolution and Quality Imaging II
V. Ralph Algazi; Sadayasu Ono; Andrew G. Tescher, Editor(s)

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