The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Adaptive Blind Watermarking Using Energy Quantization

에너지 양자화를 이용한 적응적 블라인드 워터마킹

  • Published : 2004.09.01
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Abstract

Digital watermarking is a technique which blends intellectual property right with security Blind watermarking 1S one of the difficult watermark technique because original data or inserted watermark is not needed. In this paper, we propose a new blind watermarking method using energy quantization in wavelet domain to insert watermark. The proposed method is robust for various attacks and attack strength because watermark strength is adaptively changed for energy variation of attacks. Simulation results show the proposed method is robust to various attacks such as noise addition, cropping, blurring, sharpening, maintaining imprescriptibility.

디지털 워터마킹은 지척재산권과 보안성을 결항시키는 기술이다 블라인드 워터마킹은 원본데이터나 삽입한 워터마크를 필요로 하지 않기 때문에 어려운 워터마킹 기술 중의 하나이다. 본 논문에서는 웨이블릿 영역의 에너지 양자화를 이용하여 워터마크를 삽입하는 방법을 제안한다. 제안 방법은 공격의 종류와 강도에 따른 영상의 에너지 변화에 대하여 워터마크 추출강도가 적응적으로 변하기 때문에 강인한 결과를 얻을 수 있다. 모의실험에서 상입된 워터마크의 비가시성을 유지하였으며, 잡음첨가, 잘라내기, 블러링, 샤프닝 등의 다양한 공격에 대해서 강인함을 보여주었다.

Keywords

References

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