Color gamut mapping/enhancement technique using skin color detection
AssigneeSharp Laboratories of America, Inc.
InventorsHao Pan, Scott J. Daly
Life of this patent
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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.
Claims36
A method for modifying an image to be displayed on a display comprising:
- (a) receiving an image calibrated to a first color gamut generally smaller than the color gamut of said display;
- (b) filtering 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 a color temperature of said filtered image;
- (d) displaying said color temperature modified filtered image on said display.
A method for modifying an image to be displayed on a display comprising:
- (a) receiving an image calibrated to a first color gamut generally smaller than the color gamut of said display;
- (b) modifying a color temperature of said received image;
- (c) filtering 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.
A method for modifying an image to be displayed on a display comprising:
- (a) receiving an image calibrated to a first color gamut generally smaller than the color gamut of said display;
- (b) modifying a color temperature of said received image;
- (c) filtering 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.
A method for modifying an image to be displayed on a display comprising:
- (a) receiving an image calibrated to a first color gamut generally smaller than the color gamut of said display;
- (b) modifying a color temperature of said received image;
- (c) filtering 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.
Dependencies are inferred from the claim text.