Color processing
First Claim
Patent Images
1. A method of characterizing a color imaging system, the merhod comprising:
- obtaLning ;
irst data indicative of output of the color imaging system;
processing the first data, to yield second data, according to a cc′
or appearance model that varies in accordance with neutrality of colors indicated by the first data.
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Accused Products
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.
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Citations
43 Claims
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1. A method of characterizing a color imaging system, the merhod comprising:
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obtaLning ;
irst data indicative of output of the color imaging system;
processing the first data, to yield second data, according to a cc′
or appearance model that varies in accordance with neutrality of colors indicated by the first data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A computer program product residing on a computer readable medium, for characterizing a color imaging system, comprising instructions for causing a computer to:
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obtain first data indicative of output of the color imaging system;
process the first data, to yield second data, according to a color appearance model that varies in accordance with neutrality of a color indicated by the first data. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method of producing a color on a device, the method comprising:
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obtaining first data associated with a first device and indicative of a first color;
determining second data related to stimulus data of the first device by a color appearance model that converts input data to output data using a white reference vector that varies in association with a neutrality of a color indicated by the input data;
actuating a second device according to the second data to produce a second color to approximate the first color. - View Dependent Claims (18, 19, 20)
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21. A computer program product residing on a computer readable medium, for producing a color on a device, comprising instructions for causing a computer to:
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obtain first data associated with a first device and indicative of a first color;
determine second data related to stimulus data of the first device by a color appearance model that converts a input data to output data using a white reference vector that varies in association with a neutrality of a color indicated by the input data;
actuate a second device according to the second data to produce a second color to approximate the first color. - View Dependent Claims (22, 23)
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24. A method of producing a color with an emissive device using absolute colorimetry, the method comprising:
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obtaining first data indicative of a first color;
determining second data related to the first data by a color appearance model that uses a white point of the emissive device as a white reference vector;
actuating the emissive device according to the second data to implement absolute colorimetry to produce a second color to approximate the first color. - View Dependent Claims (25, 26)
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27. A computer program product residing on a computer readable medium, for producing a color with an emissive device using absolute calorimetry, comprising instructions for causing a computer to:
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obtain first data indicative of a first color;
determine second data related to the first data by a color appearance model that uses a white point of the emissive device as a white reference vector;
actuate the emissive device according to the second data to implement absolute calorimetry to produce a second color to approximate the first color.
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28. A method of characterizing an emissive device for absolute colorimetry, the method comprising:
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obtaining first data indicative of output of the emissive device;
converting the first data to second data using a color appearance model that uses a white point of the emissive device as a reference white vector;
providing the second data for use in absolute calorimetric color reproduction. - View Dependent Claims (29)
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30. A computer-program-produ-t re-siding on a computer readable medi-um-,-for—
- -charact-erizing-an-emi-ssive device for absolute colorimetry, comprising instructions for causing a computer to;
obtain first data indicative of output of the emissive device;
convert the first data to second data using a color space that uses a white point of the emissive devic-eas—
a - -. reference white vector;
provide the second data for use in absolute colorimetric color reproduction.
- -charact-erizing-an-emi-ssive device for absolute colorimetry, comprising instructions for causing a computer to;
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31. A method of characterizing colors for reproduction between a first device and a second device, the method comprising:
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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 responses 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. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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Specification