Color image processing apparatus capable of correcting a color d

Details Color image processing apparatus capable of correcting a color d Color image processing apparatus capable of correcting a color d

1994-06-28

1998-04-21

Coles, Sr., Edward L.

Facsimile and static presentation processing

Natural color facsimile

Color correction

358532, 358448, 358464, G03F 308, H04N 140

Patent

active

057424101

ABSTRACT:
An edge quantity is determined from a lightness signal of image signals on a uniform perception color space. A chroma is determined from chroma signals of the uniform perception color image signals. A black/color edge degree is calculated from the edge quantity and the chroma thus determined. The chroma signals are converted for color deviation correction in accordance with the black/color edge degree.

REFERENCES:
patent: 5357353 (1994-10-01), Hirota
patent: 5361147 (1994-11-01), Katayama et al.

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