Color printing method and apparatus which compensates for Abney

Details Color printing method and apparatus which compensates for Abney Color printing method and apparatus which compensates for Abney

1992-10-28

1995-08-01

Powell, Mark R.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358518, G06F 1500

Patent

active

054386497

ABSTRACT:
Method and apparatus for color printing according to a printer table in which the hue angle of the colors in the printer table are warped so as to compensate for the Abney effect. A color printer gamut edge is first determined through printer gamut measurement, and color primary values within the printer gamut and outside the printer gamut are calculated and inserted into the printer table. If desired, a border table may be provided for colors outside the printer table. The hue angles for the printer table and the border table are then warped, for example, by stretching some ranges of hue angles and by compressing other ranges of hue angles, so that out-of-gamut colors are printed with a hue that is perceived to be the same as the hue of the desired color.

REFERENCES:
patent: 4477833 (1984-10-01), Clark et al.
patent: 4758885 (1988-07-01), Sasaki et al.
patent: 4941038 (1990-07-01), Walowit
patent: 4967379 (1990-10-01), Ott
patent: 5107332 (1992-04-01), Chan
patent: 5185661 (1993-02-01), Ng
patent: 5212546 (1993-05-01), Arazi et al.
patent: 5237409 (1993-08-01), Yamaguchi
"Color Gamut Matching For Hard Copy", J. Meyer, et al., 1989 SID International Symposium, Digest of Technical Papers, vol. 20, May 18, 1989, pp. 86-89.

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