Patent ID: 8014598
Filing Date: 2011-09-06
Classification: H04N

Abstract:
1. A method of changing a pixel color, comprising: upon determining that a chrominance of a pixel is in a preference chrominance area, wherein the preference chrominance area is defined as a circle in a two-dimensional chrominance plane, changing the chrominance of the pixel to a preference chrominance to generate a preference pixel, wherein the changing comprises: determining a distance between the chrominance of the pixel and a target chrominance within the preference chrominance area; determining whether the distance is less than one half the radius of the circle; setting an adjustment value based on the distance when the distance is determined to be less than one half the radius; setting the adjustment value based on a difference between a first value and a second value when the distance is determined to be greater than or equal to one half the radius; and adjusting the chrominance of the pixel based on the adjustment value and the target chrominance, wherein the first value is based on the distance and the second value is based on the entire radius.