Document Image Skew Correction Based on Page Layout Foreground and Least Square Method
Chen Wu · Jisuanji gongcheng · 2007
For the complexity of document images,this paper proposes a method based on page’s layout foreground and least square method.In this method,foreground pixels are described by special patterns.Halftones,graphics and forms are excluded from the document images by pattern classification.The biggest pattern structure is obtained after merging the rest character pattern.The skew angle is counted by using the least square method according to the points,which is obtained by searching the biggest pure text pattern structure.Experimental result shows the fastness and effectiveness of the proposed algorithm.A most prominent superiority of this method is that patterns obtained in the process of skew angle detection can be used for further layout analysis.