A method for removing artifacts from a bitmap of image data produced by scanning a halftone image may comprise the steps of: (a) calculating a weighted average intensity value for a target pixel based on a weight factor for the target pixel and on weight factors for neighboring pixels in the bitmap of...http://www.google.com.au/patents/US6232953?utm_source=gb-gplus-sharePatent US6232953 - Method and apparatus for removing artifacts from scanned halftone images
