COLOR MATCHING FOR IMAGING SYSTEMS
First Claim
Patent Images
1. A method for performing color conversion comprising:
- generating a perceptual color space value associated with an input pixel of input image data in a first color space;
determining, for the input pixel, one or more operators for converting input pixel values associated with the input pixel to output pixel values, wherein the operators comprise at least a selected color conversion matrix operator from a set of predetermined color conversion matrix operators, wherein the selected color conversion matrix operator is determined based at least in part on the perceptual color space value associated with the input pixel; and
applying the one or more operators to the input pixel values in the first color space to generate the output pixel values, wherein output image data in the first color space comprises the output pixel values.
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Abstract
Techniques related to color matching and color conversion are discussed. Such techniques may include determining operators for converting input pixel values to output pixel values in a color space such that the operators may include a set of color conversion matrix operators, a chroma adaptation operator, and/or a luma adaptation operators determined based on one or more perceptual color space values associated with the input pixel values.
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Citations
24 Claims
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1. A method for performing color conversion comprising:
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generating a perceptual color space value associated with an input pixel of input image data in a first color space; determining, for the input pixel, one or more operators for converting input pixel values associated with the input pixel to output pixel values, wherein the operators comprise at least a selected color conversion matrix operator from a set of predetermined color conversion matrix operators, wherein the selected color conversion matrix operator is determined based at least in part on the perceptual color space value associated with the input pixel; and applying the one or more operators to the input pixel values in the first color space to generate the output pixel values, wherein output image data in the first color space comprises the output pixel values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for performing color conversion comprising:
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a memory configured to receive input image data in a first color space; and an image processing unit coupled to the memory, the image processing unit to generate a perceptual color space value associated with an input pixel of the input image data, to determine, for the input pixel, one or more operators to convert input pixel values associated with the input pixel to output pixel values, wherein the operators comprise at least a selected color conversion matrix operator from a set of predetermined color conversion matrix operators and the selected color conversion matrix operator is determined based at least in part on the perceptual color space value associated with the input pixel, and to apply the one or more operators to the input pixel values in the first color space to generate the output pixel values, wherein output image data in the first color space comprises the output pixel values. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. At least one machine readable medium comprising a plurality of instructions that, in response to being executed on a device, cause the device to perform color conversion by:
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generating a perceptual color space value associated with an input pixel of input image data in a first color space; determining, for the input pixel, one or more operators for converting input pixel values associated with the input pixel to output pixel values, wherein the operators comprise at least a selected color conversion matrix operator from a set of predetermined color conversion matrix operators, wherein the selected color conversion matrix operator is determined based at least in part on the perceptual color space value associated with the input pixel; and applying the one or more operators to the input pixel values in the first color space to generate the output pixel values, wherein output image data in the first color space comprises the output pixel values. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification