A method for color correcting an original halftone bitmap image by a predefined color correction function to produce a color corrected halftone bitmap image comprising: providing an original halftone bitmap image; estimating the dot area percentage of the original halftone bitmap image in a set of sub-image...http://www.google.de/patents/US20030218780?utm_source=gb-gplus-sharePatent US20030218780 - Halftone dot-growth technique using a dot edge-detection scheme
