Color gamut mapping/enhancement technique using skin color detection
First Claim
Patent Images
1. A method for modifying an image to be displayed on a display comprising:
- (a) receiving with a processor an image calibrated to a first color gamut generally smaller than the color gamut of said display;
(b) filtering with said processor said image with a spatial filter to define regions including generally skin-tones in such a manner that the skin-tone regions of the image are modified in a manner different than generally non-skin-tone regions of said image are modified when displayed on said display;
(c) modifying with said processor a color temperature of said filtered image;
(d) displaying said color temperature modified filtered image on said display.
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Abstract
A method for mapping/enhancing the color of an image to be displayed on a display includes receiving an image having a plurality of pixels where each of the pixels has a plurality of color components. The image is processed using a pair of gamut color mapping operations in combination with skin-tone pixels detection to modify the image in a suitable manner for presentation on the display, wherein the technique includes color temperature compensation.
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Citations
36 Claims
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1. A method for modifying an image to be displayed on a display comprising:
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(a) receiving with a processor an image calibrated to a first color gamut generally smaller than the color gamut of said display; (b) filtering with said processor said image with a spatial filter to define regions including generally skin-tones in such a manner that the skin-tone regions of the image are modified in a manner different than generally non-skin-tone regions of said image are modified when displayed on said display; (c) modifying with said processor a color temperature of said filtered image; (d) displaying said color temperature modified filtered image on said display. - View Dependent Claims (2)
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3. A method for modifying an image to be displayed on a display comprising:
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(a) receiving with a processor an image calibrated to a first color gamut generally smaller than the color gamut of said display; (b) modifying with said processor a color temperature of said received image; (c) filtering with said processor said color temperature modified image with a filter that varies based upon said modified color temperature to define pixels including generally skin-tones in such a manner that the skin-tone pixels of the image are modified in a manner different than generally non-skin-tone pixels of said image are modified when displayed on said display; (d) displaying said filtered image on said display.
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4. A method for modifying an image to be displayed on a display comprising:
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(a) receiving with a processor an image calibrated to a first color gamut generally smaller than the color gamut of said display; (b) modifying with said processor a color temperature of said received image; (c) filtering with said processor said color temperature modified image with a spatial filter to define regions including generally skin-tones in such a manner that the skin-tone regions of the image are modified in a manner different than generally non-skin-tone regions of said image are modified when displayed on said display; (d) displaying said filtered image on said display. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A method for modifying an image to be displayed on a display comprising:
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(a) receiving with a processor an image calibrated to a first color gamut generally smaller than the color gamut of said display; (b) modifying with said processor a color temperature of said received image; (c) filtering with said processor said received image with a filter to define pixels including generally skin-tones in such a manner that the skin-tone pixels of the image are modified in a manner different than generally non-skin-tone pixels of said image are modified when displayed on said display, wherein said filtering is also performed in such a manner that said skin-tone pixels and said non-skin tone pixels are filtered in a different manner that accounts for color temperature; (d) displaying said filtered image on said display. - View Dependent Claims (33, 34, 35, 36)
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Specification