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Luminance-model-based DCT quantization for color image compressionA 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).
Document ID
19930049444
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Ahumada, Albert J., Jr.
(NASA Ames Research Center Moffett Field, CA, United States)
Peterson, Heidi A.
(IBM Thomas J. Watson Research Center Yorktown Heights, NY, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1992
Publication Information
Publication: In: Human vision, visual processing, and digital display III; Proceedings of the Meeting, San Jose, CA, Feb. 10-13, 1992 (A93-33438 12-63)
Publisher: Society of Photo-Optical Instrumentation Engineers
Subject Category
Cybernetics
Accession Number
93A33441
Distribution Limits
Public
Copyright
Other

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