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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 : Engineering > Computer Science

안권재 1 주성일 1 Gye-young Kim 1 HYUNG IL CHOI 1

1숭실대학교

Accredited

ABSTRACT

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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