Research on Deskew Algorithm of Scanned Image

It is difficult to ensure that the scanned document will not be skewed due to the high speed scanning of the paper document by the mechanical feed or the document itself. This will not only affect the visual effects, but also seriously affect the accuracy and speed of subsequent processing. Therefore, this paper presents a Hough transform algorithm based on automatic scanning image correction and cropping, the first to determine whether the scanned image is a text or non-text image, the image preprocessing based on different types of scanned images of the image binarization, Compared with the traditional algorithm has a good anti-interference ability, can accurately detect the scan image skew angle.