Cascade of matrix-LUT for color transformation

Details Cascade of matrix-LUT for color transformation Cascade of matrix-LUT for color transformation

2004-10-26

2009-08-18

Poon, King Y (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S445000, C358S518000, C358S523000, C382S162000, C382S167000, C345S604000

Reexamination Certificate

active

07576889

ABSTRACT:
Various implementations of this invention provide a method of color transformation of image data that included: providing at least two units, each unit comprising a combination of a plurality of look-up tables and a M×N matrix; providing image data configured in a first color space; processing the image data using a first unit to generate an output; and processing the generated output using a second unit to generate a second output; wherein the plurality of look-up tables are used to transform an input color space to a device dependent color space, and the M×N matrix is used to perform one of at least converting color data defined in standard space to data defined in XYZ space and converting image data defined in XYZ space to image data defined in LAB space.

REFERENCES:
patent: 5297219 (1994-03-01), Weldy
patent: 5412491 (1995-05-01), Bachar
patent: 6340975 (2002-01-01), Marsden et al.
patent: 6360007 (2002-03-01), Robinson et al.
patent: 6643029 (2003-11-01), Kumada et al.
patent: 7180629 (2007-02-01), Nishio et al.

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