Patent ID: 6933948
Filing Date: 2005-08-23
Classification: G11B,H04N

Abstract:
1. A method for color modification of an input image, comprising: receiving information defining at least three ranges of luma, wherein each of the at least three ranges of luma has an associated color modification that maps values for a pixel to modified values for the pixel, and a display value that defines a color in which pixels having luminance in the range of luma will be displayed; processing each pixel in the input image to classify the pixel in one of the at least three ranges of luma according to the luminance of the pixel; generating a multi-tone image from the input image, such that each pixel in the multi-tone image is set to the display value associated with the range of luma in which the corresponding pixel in the input image is classified, such that all pixels in the multi-tone image for which the corresponding pixels in the input image are in a same range of luma are set to the display value associated with that range; displaying the multi-tone image; processing each pixel in the input image by applying the color modifications associated with the ranges of luma to values for the pixel, according to the information defining the at least three ranges of luma and the luminance of the pixel to generate a modified values for the pixel, thereby generating an output image; and displaying the output image.