METHOD FOR GENERATING STOCHASTIC DITHER MATRIX

摘要

A method for generating a stochastic halftone screen (32) includes a parameterized screen generator (31) whose parameters (15) control aspects of the generated screen (32). Some parameters (15) control the size of a generated threshold array (300). A variety of threshold array sizes can be generated quickly including larger arrays (300) wherein the generation time is proportional to the natural logarithm of the threshold array size. Some parameters control a set of shaping functions used to determine the distribution of minority pixels (302) for a wide variety of printing conditions. These include controls for edge-to-area ratio, cluster size, anticipated dot gain and modeled human visual response.