Psychophysical rating of image compression techniquesImage compression schemes abound with little work which compares their bit-rate performance based on subjective fidelity measures. Statistical measures of image fidelity, such as squared error measures, do not necessarily correspond to subjective measures of image fidelity. Most previous comparisons of compression techniques have been based on these statistical measures. A psychophysical method has been used to estimate, for a number of compression techniques, a threshold bit-rate yielding a criterion level of performance in discriminating original and compressed images. The compression techniques studied include block truncation, Laplacian pyramid, block discrete cosine transform, with and without a human visual system scaling, and cortex transform coders.
Document ID
19900051811
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Stein, Charles S. (California Univ. Santa Cruz, CA, United States)
Hitchner, Lewis E. (California, University Santa Cruz, United States)
Watson, Andrew B. (NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Subject Category
Behavioral Sciences
Meeting Information
Meeting: Human Vision, Visual Processing, and Digital Display
Location: Los Angeles, CA
Country: United States
Start Date: January 18, 1989
End Date: January 20, 1989
Sponsors: JPL, SPIE, Society for Imaging Science and Technology