Color image processing apparatus, method, and printer driver

Details Color image processing apparatus, method, and printer driver Color image processing apparatus, method, and printer driver

1993-02-25

1995-04-18

Brinich, Stephen

Facsimile and static presentation processing

Natural color facsimile

Color correction

358519, H04N 146

Patent

active

054083427

ABSTRACT:
A color image processing apparatus is provided with a color correction information memory to store input masking coefficients and .gamma. correction tables. The input masking coefficients can be loaded on the memory by external commands. The .gamma. correction tables include a table for correction values for the .gamma. values at pitches of 0.1 within a range of 1.0 to .alpha. (>1.0). When a .gamma. correction process is executed, the table to be used is selected by specifying the .gamma. value by an external command. With a color correction circuit, the .gamma. correction process and input masking process are executed using the .gamma. correction tables and input masking coefficients stored in the memory.

REFERENCES:
patent: 4481532 (1984-11-01), Clark et al.
patent: 5053866 (1991-10-01), Johnson
patent: 5200817 (1993-04-01), Birnbaum

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