Systems and methods for selecting a white point for image displays
First Claim
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1. A method for converting image data from a first white point of a display to a second white point, the steps of said method comprising:
- solving for the weighting coefficients that relate the first white point coefficients and said second white point;
mapping color values utilizing said first white point, said color values derivable from said weighting coefficients, into another set of color values;
converting input image data into output image data in using said mapping.
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Abstract
Several embodiments of the present application disclose techniques, systems and methods for changing or rendering input image data that may assume a first white point for a given display into image data to be rendered under a second—assumed, desired or measured—white point of the display.
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Citations
11 Claims
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1. A method for converting image data from a first white point of a display to a second white point, the steps of said method comprising:
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solving for the weighting coefficients that relate the first white point coefficients and said second white point;
mapping color values utilizing said first white point, said color values derivable from said weighting coefficients, into another set of color values;
converting input image data into output image data in using said mapping. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for changing the chromaticity triangle calculations for input image data, the steps of said method comprising:
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converting input image data to a first color space, said first color space having substantially the same white point as the display;
calculating the chromaticity triangle of the converted input image data. - View Dependent Claims (8, 9, 10)
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11. A method of calculating chromaticity triangles of input image data, the steps of said method comprising:
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constructing a plurality of Boolean tests to determine the chromaticity triangle of any input image data;
applying a correction for said Boolean tests depending upon the desired white point of the display.
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Specification