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US 7,119,927 B2Granted
Color conversion device and color conversion method
AssigneeMitsubishi Corporation
InventorsHiroaki Sugiura, Shuichi Kagawa
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AssigneeMitsubishi Corporation
InventorsHiroaki Sugiura, Shuichi Kagawa
Estimating the term…
Responsive to image data of three colors, six hue data are obtained, and then first comparison-result data and second-order terms each relating to one of the six hues, and second comparison-result data each relating to one of the six inter-hue areas are obtained. Matrix calculation is performed on the first comparison-result data, the second comparison-result data, and the second-order terms, using coefficients. By varying the coefficients, adjustment can be made to only the target hue or inter-hue area, without affecting other hues and inter-hue areas. Thus, the six hues and six inter-hue areas can be varied independently, and the large-capacity memory is not required. In addition, gray scale conversion is applied to the result of the matrix calculation, so as to compensate for the non-linearity of the output device.
A color conversion device for converting first color data into second color data by performing pixel-by-pixel color conversion, the color conversion device comprising:
A method for converting first color data into second color data by performing pixel by pixel color conversion, the method comprising:
Dependencies are inferred from the claim text.