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《Journal of Computer Aided Design & Computer Graphics》 2001-08
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Page Skew Detection and Correction Based on Line Continuity

WANG Shu-Hua LI Zuo CAI Shi-Jie (State Key Laboratory of Novel Software Technology, Nanjing University, Nanjing 210093)  
During document scanning, the input document images inevitably introduce skew, while the algorithms for layout analysis and character recognition are every sensitive to page skew. For detecting the page skew, center of the lowest row pixels within each bounding box of connected component is taken as eigen-point. The baseline direction that verifies the page skew can be calculated according to the eigen-points in a text line. Then a correction method based on horizontal and vertical offset is provided. Experiments show that this approach is fast and accurate.
【CateGory Index】: TP317.1
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