Secondary quantization of digital image signals
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United States of America Patent
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May 30, 1995
Issued Date -
N/A
app pub date -
Aug 13, 1993
filing date -
Apr 18, 1991
priority date (Note) -
Expired
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Abstract
The secondary quantization of a plurality of signals such as scanner signals quantized in a colorimetric coordinate system for the modified spectral response of a display device. The secondary quantization reflects the nonlinear human response to color. Two embodiments of the secondary quantizationmethod are presented. The first method is a global cost reduction approach and the second is a method that diffuses the visual costs equally into each secondary quantization level or bin.
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