한국통신학회논문지 B : 네트워크 및 융합 서비스, v.27, no.11C, pp.1106-1111
ISSN
1226-4717
Publisher
한국통신학회 (KICS)
Language
Korean
Type
Journal Article
Abstract
본 논문은 원신호의 지역 평균값을 등가적으로 제거함으로써 검출 오류확률을 감소시키는 워터마킹 기법을 제안한다. 우선 원신호의 지역 평균값의 제거가 검출 오류확률을 감소시킴을 보인다. 여기서 원신호의 지역 평균값의 제거는 원신호를 변형하게 되므로 원신호를 변형하지 않고 등가적으로 원신호의 지역 평균값을 제거하는 방식을 필요로 하게 된다. 그 방식은 워터마크 신호의 지역 평균값을 제거한 워터마크를 삽입함으로써 워터마크 검출 시 원신호의 지역 평균값을 제거한 것과 같은 효과를 가짐에 기초한다. 이러한 결과들이 이론적으로 증명되며, 다양한 워터마크 신호를 적용한 실험을 통해 검증한다.
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