Color processing apparatus and color processing method

Details Color processing apparatus and color processing method Color processing apparatus and color processing method

2007-03-29

2010-11-09

Baker, Charlotte M (Department: 2625)

Facsimile and static presentation processing

Natural color facsimile

Color correction

C358S516000, C358S519000, C358S520000, C358S521000, C358S522000, C358S523000, C358S001900, C382S162000, C382S167000

Reexamination Certificate

active

07830568

ABSTRACT:
An output color is calculated from a fundamental stimulus value and a spectral support coefficient which indicate an input color using a calculation unit for calculating an output color corresponding to the input fundamental stimulus value and the input spectral support coefficient using a table whose inputs are a fundamental stimulus value and a spectral support coefficient. The interval of grid points of the table are uneven regarding the spectral support coefficient, and the interval in the vicinity whose relevant spectral support coefficient is zero is small as compared with the interval in the vicinity whose spectral support coefficient has a great absolute value.

REFERENCES:
patent: 5754184 (1998-05-01), Ring et al.
patent: 7027067 (2006-04-01), Ohga
patent: 7053910 (2006-05-01), Newman
M. Derhak, M. Rosen, “Spectral Colorimetry Using LabPQR—An Interim Connection Space”, Color Imaging Conference 2004, U.S.A., Imaging Science and Technology, Nov. 2004, pp. 246-250.
S. Tsutsumi, M. Rosen, R. Berns, “Spectral Reproduction using LabPQR: Inverting the Fractional-Area-Coverage-to-Spectra Relationship”, International Congress of Imaging Science, U.S.A., Imaging Science and Technology, May 2006, pp. 107-110.

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