Color cross reference selection system and method
First Claim
1. A method for selecting a cross reference color match for outputting to an output device, the method comprising the steps of:
- a. identifying a full color gamut of the output device;
b. reducing the full color gamut to a first reduced color gamut;
c. comparing a source color to the first reduced color gamut and the full color gamut to determine a value that is closest to the source color in each gamut;
d. determining if the value is outside the reduced gamut, but inside the full color gamut; and
e. forming a second reduced gamut that is larger in size than the first reduced gamut.
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Accused Products
Abstract
A system and method are proposed for the printing of all possible colors, including all permutations of primary inks used to make processed colors, in equal increments and of a size easily measurable with a device that will convert the colors into standard color coordinates. These colors are categorized and used to determine the ability of the output device to reproduce a source color. Each color printed within the gamut of an output device is identified and correlated to independent color coordinates. The primary color recipe necessary to reproduce a reference color within the gamut of the output device is identified. The magnitude of deviation of out of gamut source colors is determined, and the closest in gamut colors are specified through methods of interpolation and nearest neighbor. Furthermore, the alteration in gamut size can be predicted based upon image manipulation processes associated with the workflow. Source colors can be correlated to the altered destination gamut in order to determine the recipe of in gamut colors. An extension of this functionality teaches a method for determining the type, and the extent, of pre-process workflow alterations necessary to maintain or eliminate a source color from the color set of the output device. A set of source colors is correlated to a companion set of the output device in gamut colors, by dependent interpolated adjustment of the set with regard to hue, saturation, and lightness, rather than an absolute value nearest match.
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Citations
13 Claims
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1. A method for selecting a cross reference color match for outputting to an output device, the method comprising the steps of:
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a. identifying a full color gamut of the output device;
b. reducing the full color gamut to a first reduced color gamut;
c. comparing a source color to the first reduced color gamut and the full color gamut to determine a value that is closest to the source color in each gamut;
d. determining if the value is outside the reduced gamut, but inside the full color gamut; and
e. forming a second reduced gamut that is larger in size than the first reduced gamut. - View Dependent Claims (2, 3, 12, 13)
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4. A method for identifying a primary color recipe necessary to reproduce a reference color within a gamut of an output device comprising the steps of:
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a. using image data to modify the gamut of the output device using image processing;
b. using the modified gamut as a basis for cross-correlation to the reference color by comparing the modified gamut and the reference color;
c. determining magnitude of deviation of out of gamut source colors; and
d. specifying a closest match in gamut color. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11)
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Specification