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An Improved Method for Detecting Caption in image using DCT-coefficient and Transition-map Analysis
Journal of The Korea Society of Computer and Information
Abbr :
JKSCI
2011, 16(4), pp.63-74
Publisher : The Korean Society Of Computer And Information
Research Area : Computer Science
2011, 16(4), pp.63-74
Publisher : The Korean Society Of Computer And Information
Research Area : Computer Science
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In this paper, we proposed the method for detecting text region on image using DCT-coefficient and transition-map analysis. The detecting rate of traditional method for detecting text region using DCT-coefficient analysis is high, but false positive detecting rate also is high and the method using transition-map often reject true text region in step of verification because of sticky threshold. To overcome these problems, we generated PTRmap(Promising Text Region map) through DCT-coefficient analysis and applied PTRmap to method for detecting text region using transition map. As the result, the false positive detecting rate decreased as compared with the method using DCT-coefficient analysis, and the detecting rate increased as compared with the method using transition map.
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