Secondary quantization of digital image signals

Details Secondary quantization of digital image signals Secondary quantization of digital image signals

1993-08-13

1995-05-30

Coles, Sr., Edward L.

Facsimile and static presentation processing

Natural color facsimile

Color correction

348419, H04N 1415

Patent

active

054207053

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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