Patent ID: 6721069
Filing Date: 2004-04-13
Classification: G06T,H04N

Abstract:
A method of color image processing for mapping an input image from a full color gamut to a textured highlight color gamut, said method comprising the steps of:(a) defining an input color in a desired three dimensional color space by determining intensity values for a first color coordinate, a second color coordinate, and a third color coordinate; (b) partitioning a halftone cell into first and second regions, said first region containing first pixels and said second region containing second pixels; (c) based on the intensity values, selecting a first number of first pixels for rendering in a highlight color, said first number of first pixels being selected from all the first pixels in a first sequential order; (d) based on the intensity values, selecting a second number of first pixels for rendering in a base color, said second number of first pixels being selected from all the first pixels in a second sequential order; (e) based on the intensity values, selecting a first number of second pixels for rendering in the highlight color, said first number of second pixels being selected from all the second pixels in a third sequential order; and, (f) based on the intensity values, selecting a second number of second pixels for rendering in the base color, said second number of second pixels being selected from all the second pixels in a fourth sequential order.