1. A method of processing a digital video signal corresponding to an image, comprising acts of: identifying, using a first edge detecting process, a set of zero or more edges in the image based upon the digital video signal; identifying, using an independent second edge detecting process that is different than the first edge detecting process, at least one additional edge in the image that is not identified by the first edge detecting process; combining the set of edges and the at least one additional edge to generate an edge map that includes the set of edges and the at least one additional edge; and processing the digital video signal to modify visually perceptible artifacts in the image based upon the edge map.