Look-up table generation method, computer program, and...

Details Look-up table generation method, computer program, and... Look-up table generation method, computer program, and...

2007-07-31

2007-07-31

Do, Anh Hong (Department: 2624)

Image analysis

Color image processing

Color correction

C382S162000

Reexamination Certificate

active

10778991

ABSTRACT:
Upon generating a look-up table data used to retouch and color-convert arbitrary image data imaged by an imaging apparatus, when the saturation value of source image data is equal to or smaller than a predetermined threshold value, new image data which undergoes tinting correction of achromatic colors by multiplying the saturation value of the retouched image data by a correction coefficient calculated from the saturation values of the source image data and retouched image data is generated. Then, a look-up table is generated using the source image data and the new third image data which is free from any tinting of achromatic colors. Upon generating a look-up table for color conversion, new image data which undergoes tinting correction of achromatic colors by converting grid point storage values stored at grid points representing achromatic colors of a basic look-up table into achromatic color data is generated, and a look-up table is generated using the source data and the new image data which is free from any tinting of achromatic colors.

REFERENCES:
patent: 6059718 (2000-05-01), Taniguchi et al.
patent: 6823083 (2004-11-01), Watanabe et al.
patent: 411069181 (1999-03-01), None
patent: 2001069533 (2001-03-01), None
patent: 2001292332 (2001-10-01), None

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