Patent ID: 7672515
Filing Date: 2010-03-02
Classification: G06T,H04N

Abstract:
1. Apparatus comprising: a color image processor to process color images including a given color image, the given color image including plural color separations each having a set of color values for respective image pixels, the image pixels corresponding to different spatial locations within the given color images; an edge distinguisher to distinguish and thereby identify some edges of the given image as opposing edges and others as non-opposing edges, a given edge being an opposing edge when a transition of the given edge goes, for one separation of the given color image, in one direction from a non-white color value to a white value, and goes, for another separation of the given color image, in the same direction from a white value to a color value, and another edge being a non-opposing edge when it includes a transition in a composite of color separations of the given color image from a non-white color intensity value, at one side of the edge, to a white intensity value, at the other side of the edge; and an edge trapping mechanism to replace or modify pixels along or near an edge, the edge trapping mechanism applying at least one edge trapping operation to the identified non-opposing edges not distinguished as opposing edges and applying a different edge trapping operation to the distinguished opposing edges.