Color processing
AssigneeEastman Kodak Company
InventorsChristopher J. Edge, William A. Rozzi, Timothy A. Fischer
Life of this patent
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Abstract
A method of characterizing a color imaging system is provided. The method comprises obtaining first data indicative of output of the color imaging system. The first data is processed, to yield second data, according to a color appearance model that varies in accordance with neutrality of colors indicated by the first data. Other methods are provided as well as systems and computer program products for characterizing color imaging systems and devices and for producing colors.
Claims20
A method of characterizing colors for reproduction between a first device and a second device, the method comprising:
- normalizing first tristimulus values indicative of a color of the first device using local black point values;
- transforming the normalized first tristimulus values to obtain color values indicative of modified cone response of the human eye;
- chromatically adapting the color values from a local condition to a reference condition;
- and
- transforming the adapted color values to obtain second tristimulus values.
A computer-readable medium comprising instructions for characterization of colors for reproduction between a first device and a second device, the instructions causing a processor to:
- normalize first tristimulus values indicative of a color of the first device using local black point values;
- transform the normalized first tristimulus values to obtain color values indicative of modified cone response of the human eye;
- chromatically adapt the color values from a local condition to a reference condition;
- and
- transform the adapted color values to obtain second tristimulus values.
Dependencies are inferred from the claim text.