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Proceedings Paper

Luminance-model-based DCT quantization for color image compression
Author(s): Albert J. Ahumada; 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, 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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