SYSTEMS AND METHODS FOR SELECTIVE HANDLING OF OUT-OF-GAMUT COLOR CONVERSIONS
First Claim
1. A display system for rendering input image data onto a display, said display system comprising:
- a display, said display comprising a subpixel repeating group, said group comprising colored subpixels of at least four colors, said display having a target gamut space;
a selective compression unit coupled to the display, said unit surveying said input image data to produce intermediate image data wherein said intermediate image data is a function of a segmentation of the input image data according to a parameter; and
a gamut mapping unit coupled to the selective compression unit for mapping said intermediate image data onto image data that is renderable upon the target gamut of said display comprising said subpixel repeating group.
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Accused Products
Abstract
Displays systems and methods for selectively reducing or compressing image data values within an image are recited. Display systems transform input image data from one input gamut hull or space to another target gamut hull or space that is substantially defined by different subpixel repeating groups comprising the display. Display systems described herein comprise a selective compression unit, said unit surveying said input image data to produce intermediate image data based upon a segmentation of the input image according to a parameter. Suitable parameters for segmenting the image include one or more of the following: spatial segments, chromatic segments or temporal segments. A selective compression amount may be determined so as to substantially maintain local contrast of the image data within a given segment.
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Citations
17 Claims
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1. A display system for rendering input image data onto a display, said display system comprising:
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a display, said display comprising a subpixel repeating group, said group comprising colored subpixels of at least four colors, said display having a target gamut space; a selective compression unit coupled to the display, said unit surveying said input image data to produce intermediate image data wherein said intermediate image data is a function of a segmentation of the input image data according to a parameter; and a gamut mapping unit coupled to the selective compression unit for mapping said intermediate image data onto image data that is renderable upon the target gamut of said display comprising said subpixel repeating group. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A display system for rendering input image data onto a display, said display system comprising:
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a display, said display substantially comprising a subpixel repeating group, said group comprising colored subpixels of at least four colors, said display having a target gamut space; a gamut mapping unit coupled to said display for mapping said input image data onto image data that is substantially renderable upon the target gamut of said display comprising said subpixel repeating group; and a selective compression unit coupled to said gamut mapping unit, said selective compression unit surveying said image data to produce intermediate image data wherein said intermediate image data is a function of a segmentation of the input image according to a parameter. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A method for selectively compressing input image data within an image, said method comprising:
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segmenting an image into a set of segments, said segments determined according to a parameter; surveying said input image data within each segment to find the out-of-gamut colors in that segment; for each image data value within a segment, determining a reduction amount to apply to each image data value within each segment; and reducing each image data value within said segment by the reduction amount, such that the local contrast of the reduced image data is substantially maintained from the input image data. - View Dependent Claims (14, 15)
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16. A computer readable medium, said medium comprising an encoding for a method for selectively compressing input image data within an image, said method comprising:
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segmenting an image into a set of segments, said segments determined according to a parameter wherein said parameter that determines the segmentation of the image comprises at least one of a group, said group comprising a spatial segmentation, a chromatic segmentation and a temporal segmentation; surveying said input image data within each segment to find the out-of-gamut colors in that segment; for each image data value within a segment, determining a reduction amount to apply to each image data value within each segment; and reducing each image data value within said segment by the reduction amount, such that the local contrast of the reduced image data is substantially maintained from the input image data. - View Dependent Claims (17)
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Specification