Selective edge softening and selective edge dithering is introduced into an image representation to improve local control where halo problems are expected. Selective areas of dilation are isolated and separately dithered or halftoned, the result of which is then swapped back into or substituted for the...http://www.google.com.au/patents/US7046397?utm_source=gb-gplus-sharePatent US7046397 - Method of selective edge softening and rendering for the suppression of halo
