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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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【Citations】
Chinese Journal Full-text Database 1 Hits
1 TIAN Po-huang,PENG Tian-qiang,LI Bi-cheng (Zhengzhou Information Science and Technology Institute,Zhengzhou,Henan 450002,China);An Approach for Video-text Extraction Based on Text Traversing Line and Stroke Connectivity[J];Acta Electronica Sinica;2009-01
【Co-citations】
Chinese Journal Full-text Database 4 Hits
1 Halidan·Aa,Kuerban·Maitimushab(a.College of Electrician Engineering;b.College of Artistic Design,Xinjiang University,Urumqi 830049,China);Localization of Uyghur Character in Image Based on Wavelet Transform[J];Computer Engineering;2011-08
2 YE Li-hua;Video label detection and recognition[J];Manufacturing Automation;2011-06
3 SU Chang1,2,HU Xiao-dong1,WANG Bin-fu1,SHANG Feng-jun1(1.College of Computer Science and Technology,Chongqing University of Posts and Telecommunications,Chongqing 400065,China; 2.Department of Computer Science,Cornell University,Ithaca,NY,14853,USA);Video image character recognition based on stroke-related weight[J];Journal of Computer Applications;2012-08
4 ZHANG Jian-ming,WANG Juan,ZHANG Ju,DU Dan,FANG Fang(School of Computer Science and Telecommunication Engineering,Jiangsu University,Zhenjiang 212013,China);Video text location method based on conditional stroke density extraction[J];Computer Engineering and Design;2011-10
【Secondary Citations】
Chinese Journal Full-text Database 1 Hits
1 ZHANG Yousheng 1 PENG Qingsong 1 WANG Ronggui 1 OU Chunsheng 1 (1 School of Computer and Information, Hefei Technology University, 193Tunxi Road, Hefei ,China, 230009);Method for Detecting and Locating Text Areas in Images Based on Sub-image VCH[J];Editorial Board of Geomatics and Information Science of Wuhan University;2003-03
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