대한전자공학회논문지SP (Journal of the Institute of Electronics Engineers of Korea SP)

대한전자공학회 (The Institute of Electronics and Information Engineers)
권호 표지

칼라영상의 화질열화를 고려한 선택적 삽입의 강인한 워터마킹

Robust Watermarking using Selective Embedding Method in Color Images

  • 원준호 (서울통신기술(주)통신시스템연구소) ;
  • 전병우 (성균관대학교 정보통신공학부)
  • 발행 : 2004.09.01
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초록

본 논문에서는 칼라영상 각 채널에 대한 인간시각 특성이 다르다는 것을 이용하여, 워터마킹의 강인성과 화질열화에 중요한 영향을 미치는 Scaling값을 구하는 알고리듬을 제안한다. 또한, 칼라영상이 다채널 영상임을 이용하여, 상관도와 임계값의 차이가 최대가 되는 경우를 선택하여 워터마크를 삽입하는 선택적 워터마킹 알고리듬을 제안한다. 제안된 알고리듬을 통하여 동일한 화질열화의 조건 아래에서 보다 향상된 강인성을 얻을 수 있다.

In this paper, we propose the new algorithms of watermarking that utilize the characteristics of color images for solving the trade-off problem between the image quality and the robustness. Since the human visual characteristics of each RGB channel are different, we can gain more robust watermarking on the condition of the same image degradation.

키워드

참고문헌

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