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US 6,650,438 B1Granted
Construction of a color transform to reduce effects of scanner metamerism
AssigneeSharp Laboratories of America, Inc.
InventorsWilliam C. Kress, James Z. Chang
Life of this patent
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Abstract
A method of transforming scanned RGB values into a colorimetric color space includes identifying multiple input media types to be scanned; assigning a weighting factor to each input media type; dividing input color space into segments; assigning a weighting factor to each input color space segment; applying regression and interpolation techniques to minimize color error; and generating a colorimetric output.
Claims11
A method of transforming scanned RGB values into a colorimetric color space comprising:
- identifying multiple input media types to be scanned;
- assigning a weighting factor to each input media type;
- dividing input color space into segments;
- assigning a weighting factor to each input color space segment;
- applying regression and interpolation techniques to minimize color error;
- and
- generating a colorimetric output.
4 more elements
A method of transforming scanned RGB values into a colorimetric color space comprising:
- identifying multiple input media types to be scanned, including identifying input media types taken from the group of media types including Kodak® photographic print media, graphic arts media, HP® ink jet prints on photo paper, outputs from Tektronix® laser printers, outputs from Canon® laser printers, and outputs from Xerox® laser printers;
- assigning a weighting factor to each input media type;
- dividing input color space into segments;
- assigning a weighting factor to each input color space segment;
- applying regression and interpolation techniques to minimize color error;
- and
- generating a colorimetric output.
4 more elements
Dependencies are inferred from the claim text.