Patent ID: 9147232
Filing Date: 2015-09-29
Classification: G03G,G06K,G06T,H04N

Abstract:
1. A method for reducing halo artifacts in an electrophotographic printing system, the method implemented at least in part by a data processing system and comprising: receiving an input image including a plurality of input pixels having input pixel values; automatically analyzing the input image to determine an edge map image indicating light-side edge regions that include edge pixels that are adjacent to edge transitions in the input image and are on a lighter side of the edge transition; performing at least one edge region dilation operation to the edge map image to expand the light-side edge regions in a direction away from the edge transitions thereby providing expanded light-side edge regions; forming a corrected image by modifying the input pixels of the input image corresponding to the expanded light-side edge regions to determine corrected pixels having corrected pixel values; and printing the corrected image using the electrophotographic printing system.