DCT계수와 천이지도 분석을 이용한 개선된 영상 내 자막영역 검출방법 (An Improved Method for Detecting Caption in image using DCT-coefficient and Transition-map Analysis)

서지정보

· 발행기관 : 한국컴퓨터정보학회
· 수록지 정보 : 한국컴퓨터정보학회논문지 / 16권 / 4호 / 63 ~ 74페이지
· 저자명 : 안권재, 주성일, 김계영, 최형일

초록

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.

영어초록

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.

참고자료

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