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BLACK GENERATION TO OPTIMIZE COLOR GAMUT VOLUME AND QUALITY WITHIN LIMITS ON COLORANT USAGE
BLACK GENERATION TO OPTIMIZE COLOR GAMUT VOLUME AND QUALITY WITHIN LIMITS ON COLORANT USAGE
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机译:在限制颜色使用的前提下,通过黑色生成优化颜色小球的数量和质量
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摘要
A method for generating device-dependent color values which satisfy a colorant limit for an output device includes, for an input color defined by input values for three color channels in a first device-dependent color space, converting the input values to a hue angle θ, a saturation S, and value V in a second device-dependent color space. Minimum, maximum and middle ones of the input values are identified. The minimum is set to zero and the middle adjusted to maintain the input hue angle. A hue leaf relating output colorant mixture to input color can be constructed for the hue angle, and partitioned into regions. The region of the hue leaf containing the input color is identified and interpolated to identify intermediate values for the input color in a third device-dependent color space, such as CMYK. Output values in the third device-dependent color are the intermediate values or values derived therefrom.
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