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《Application Research of Computers》 2014-10
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Graphics text detection with max gradient difference

GAO Shi-lin;JI Li-xin;GAO Chao;National Digital Switching System Engineering & Technological R&D Center;  
This paper proposed an algorithm with max gradient difference by analyzing the text feature. It firstly calculated the gradient of two direct,vertical and horizontal. And then it got the max gradient different matrix by calculating the max gradient difference in a window. Then,it took an adaptive threshold algorithm to determine the text pixels,and calculated the intersection of two results in order to eliminate the influence of part of the complex background. It conducted mathematical morphology operation and prior knowledge to eliminate the false text area. Finally,it used the improved across-line algorithm for precise locating of text. Experiments show that this algorithm not only has higher recall ratio of transverse text,and also has good effect for vertical text.
【Fund】: 国家“863”计划资助项目(2011AA010603 2011AA010605)
【CateGory Index】: TP391.41
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【Secondary Citations】
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