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Proceedings Paper

Luminance-model-based DCT quantization for color image compression
Author(s): Albert J. Ahumada Jr.; Heidi A. Peterson
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Paper Abstract

A model is developed to approximate visibility thresholds for discrete cosine transform (DCT) coefficient quantization error based on the peak-to-peak luminance of the error image. Experimentally measured visibility thresholds for R, G, and B DCT basis functions can be predicted by a simple luminance-based detection model. This model allows DCT coefficient quantization matrices to be designed for display conditions other than those of the experimental measurements: other display luminances, other veiling luminances, and other spatial frequencies (different pixel spacings, viewing distances, and aspect ratios).

Paper Details

Date Published: 27 August 1992
PDF: 10 pages
Proc. SPIE 1666, Human Vision, Visual Processing, and Digital Display III, (27 August 1992); doi: 10.1117/12.135982
Show Author Affiliations
Albert J. Ahumada Jr., NASA Ames Research Ctr. (United States)
Heidi A. Peterson, IBM Thomas J. Watson Research Ctr. (United States)

Published in SPIE Proceedings Vol. 1666:
Human Vision, Visual Processing, and Digital Display III
Bernice E. Rogowitz, Editor(s)

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