Patent ID: 6351557
Filing Date: 2002-02-26
Classification: H04N

Abstract:
A method for adjusting color of a portion of an input image, including:receiving an indication of a source color defined by a first set of values and an indication of a destination color defined by a second set of values; computing the difference between the source color and destination color by determining offsets between the first set of values and the second set of values; identifying pixels in the portion of the input image as similar to the source color, wherein a color of each identified pixel is defined by a third set of values; and for each identified pixel, adjusting the third set of values defining the color of the identified pixel using the computed offsets to produce an adjusted set of values that approximates the destination color, including: adjusting saturation of the identified pixel according to a method that depends on a direction in which the saturation is to be adjusted.