An image processing device includes an image data correction unit for correcting multi-level image data of a target pixel; an image data binarizer for binarizing the corrected multi-level image data of the target pixel; a binarization error calculator which calculates a first error between the corrected...http://www.google.fr/patents/US6332045?utm_source=gb-gplus-shareBrevet US6332045 - Image processing device
