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Proceedings Article

Perceptual distortion analysis of color image VQ-based coding

[+] Author Affiliations
Christophe Charrier, Kenneth Knoblauch, Hocine Cherifi

Univ. Jean Monnet de Saint-Etienne (France)

Proc. SPIE 3025, Very High Resolution and Quality Imaging II, 134 (April 4, 1997); doi:10.1117/12.270046
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From Conference Volume 3025

  • Very High Resolution and Quality Imaging II
  • V. Ralph Algazi; Sadayasu Ono; Andrew G. Tescher
  • San Jose, CA | February 08, 1997

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.

© (1997) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Christophe Charrier ; Kenneth Knoblauch and Hocine Cherifi
"Perceptual distortion analysis of color image VQ-based coding", Proc. SPIE 3025, Very High Resolution and Quality Imaging II, 134 (April 4, 1997); doi:10.1117/12.270046; http://dx.doi.org/10.1117/12.270046


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