Accuracy of color conversion profile

Details Accuracy of color conversion profile Accuracy of color conversion profile

2008-05-06

2008-05-06

Poon, King Y. (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S523000, C358S518000, C358S519000, C358S003260, C358S534000, C382S167000

Reexamination Certificate

active

10824694

ABSTRACT:
A method for determining lattice points to be referenced to prepare the correspondence defining data, said method including steps of prescribing a smoothness evaluation function which evaluates smoothness of arrangement of lattice points in the device-independent color space and contains a constraint condition that the arrangement of lattice points becomes nonuniform at a certain position in the device-independent color space and which has as a variable the lattice point position information in the low-dimensional color space which is prescribed by less color components than the number of inks used by the printing apparatus, optimizing the arrangement of lattice points in the device-independent color space by improving the rating of the smoothness evaluation function, with the lattice point position information in the low-dimensional color space varied, and determining lattice points to be referenced to prepare the correspondence defining data in the optimized state.

REFERENCES:
patent: 6546132 (2003-04-01), Bhattacharjya et al.
patent: 6873441 (2005-03-01), Kuwabara et al.
patent: 6952493 (2005-10-01), Zeng

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