Patent ID: 6690389
Filing Date: 2004-02-10
Classification: G09G,H04N

Abstract:
A method for creating a dither array for use in generating output images by an output device based on corresponding input images having a number of input levels, the output device supporting a number of output levels and having a tone error characteristic, the method comprising the steps of:receiving a tone map that corrects the tone error characteristic of the output device; receiving an initial dither template for use in performing digital halftoning, the dither template having a plurality of template levels; modifying the template levels of the initial dither template based on the received tone map to produce an adjusted dither template; normalizing the template levels of the adjusted dither template in response to the number of levels of the input images and the number of levels of the output device to produce a dither array having a plurality of dither values; and utilizing the dither array in a run-time dither system to generate an output image based on a given input image.