Journal of Advanced Navigation Technology (한국항행학회논문지)

The Korean Navigation Institute (한국항행학회)
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Digital Watermarking Method using Discrete Optimization Method

이산최적화 기법을 사용한 디지털 워터마킹

  • 이창순 (대구한의대학교 모바일콘텐츠학부)
  • Received : 2013.09.11
  • Accepted : 2014.02.14
  • Published : 2014.02.28
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Abstract

In recent, watermarking technology have been paying attention to methods avoiding illegal use and reproduce of digital contents. Then, in order to protect the right of digital contents, a watermark image is inserted into original images. In different watermarking methods, several technologies using Ant Colony Algorithm have been studied. In this paper, we propose a watermarking method using a discrete optimization method in the ants colony algorithm. This proposed method resembls the process that ants follow the pheromone traps to find out food. And when a watermark image is inserted into original images, the proposed method considers the deployment of obstacles or the balance between cells in the entire digital image. Simulation results show that the proposed method is increased in robustness of watermarked image and is decreased in the perceptibility of watermarking compared to the previous methods.

최근 워터마킹 기술은 불법적인 디지털 콘텐츠 복사와 콘텐츠의 무단 도용을 막는 방법으로 주목받고 있다. 즉, 디지털 콘텐츠의 권리를 보호하기 위하여, 워터마크 이미지를 원본이미지에 삽입한다. 다양한 워터마킹 기법 중에서 개미알고리즘을 이용한 기술들이 연구되고 있으며, 본 논문에서는 개미알고리즘에 이산최적화 방법을 사용한 워터마킹 기술을 제안한다. 제안하는 기법은 개미가 음식을 찾기 위해 페르몬 흔적을 �i아가는 방법과 유사하다. 또한 원본 이미지에 워터마크를 삽입할 때 장애물의 배치나 전체 이미지들 사이의 균형을 고려한다. 시뮬레이션 결과는 제안한 방법이 기존 알고리즘을 사용한 워터마킹 기술과의 비교에서 워터마크 된 이미지의 강건성은 증가되고 워터마킹 인지성은 감소함을 보여 준다.

Keywords

References

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