Enhanced color correction
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United States of America Patent
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-
Jul 15, 2003
Grant Date -
N/A
app pub date -
Apr 28, 2000
filing date -
Apr 30, 1999
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method and apparatus for correcting the color of an image signal. Data in a first color space such as RGB is converted (502) to primary/secondary/neutral color space by setting neutral color word equal to the minimum of the input values, the primary color word equal to the maximum of the input values minus the neutral color word, and the secondary color word equal to the median of the input values minus the neutral color word. A set of three coefficients is selected (506) for each of the primary color word, the secondary color word, and the neutral color word. The primary, secondary, and neutral color words are then multiplied by the coefficients by a matrix multiplier (504) to yield color-corrected data in the first color space.
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Cited Art Landscape
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