1. A method for processing image data comprising: identifying a first group of pixels exhibiting a first characteristic; identifying a second group of pixels exhibiting a second characteristic; identifying a third group of pixels exhibiting the first and second characteristics; processing the first group of pixels in accordance with at least a first operation; processing the second group of pixels in accordance with at least a second operation; processing the third group of pixels in accordance with the at least first and second operations; and blending values resulting from processing of the third group of pixels by the first process with values resulting from processing of the third group of pixels by the second process.