Patent Document ID: 20130201363
Application ID: 13762042
Patent Status: 0

Claim One:
1. A method, comprising: for each of a plurality of initial colors, estimating color space coordinates, including a lightness value (L*), a red-green value (a*), and a yellow-blue value (b*), that correspond to that initial color; for each of the estimated color space coordinates, converting the red-green value (a*) and the yellow-blue value (b*) into a chroma value and a hue angle; applying a desaturation factor to each of the chroma values to generate corresponding desaturated chroma values; for each of the desaturated chroma values, converting that desaturated chroma value and the associated hue angle into a desaturated red-green value (a*) and a desaturated yellow-blue value (b*); converting each of the desaturated red-green values (a*), the desaturated yellow-blue values (b*), and the associated lightness values (L*) into a respective one of a plurality of desaturated colors; generating a color correction matrix relating the initial colors to the desaturated colors; and with image processing circuitry, applying the color correction matrix to at least one image to reduce saturation levels of the image without substantially altering hues in the image.