A method for deskewing text is disclosed, in which a noisy digitized gray scale image is preprocessed by binarization, noise removal, and then by smearing in three patterns. A selected smeared image having minimal runs is sampled, and the resulting sampled image subjected to the Hough process using a...http://www.google.es/patents/US6687421?utm_source=gb-gplus-sharePatente US6687421 - Skew detection of text in a noisy digitized image
