Color conversion method and image processor

Details Color conversion method and image processor Color conversion method and image processor

2006-03-21

2006-03-21

Bella, Matthew C. (Department: 2676)

Computer graphics processing and selective visual display system

Computer graphics processing

Attributes

C345S600000, C345S591000, C345S593000, C358S518000, C358S521000, C358S523000, C382S162000, C382S167000

Reexamination Certificate

active

07015929

ABSTRACT:
In the case of color purification, images do not appear unnatural even by an input profile other than a certain particular input profile, no considerable labor is required for creating profiles and no large memory area is required for storing the profiles. A color conversion method includes holding a color space used for color conversion for color data having specific color space characteristics in advance, comparing color space characteristics of the inputted color data with color space characteristics of the color space held in advance, performing color conversion using gradation characteristics of the inputted color data and a color space of the inputted color data when a difference between the color space characteristics is a set threshold level or less, and performing color conversion using the gradation conversion data of the inputted color data and the color space held in advance when the difference is over the set threshold level.

REFERENCES:
patent: 5539540 (1996-07-01), Spaulding et al.
patent: 2002/0093698 (2002-07-01), Kagawa
patent: 2004/0263880 (2004-12-01), Ito et al.
patent: 2000-184222 (2000-06-01), None
patent: 2002-152536 (2002-05-01), None

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