전기전자학회논문지 (Journal of IKEEE)

  • 제15권3호
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  • Pages.241-247
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  • 2011
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  • 1226-7244(pISSN)
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  • 2288-243X(eISSN)
한국전기전자학회 (Institute of Korean Electrical and Electronics Engineers)
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DCT 블록의 멀티미디어 핑거프린팅

Multimedia Fingerprinting in DCT Block

  • 이강현 (조선대학교 전자정보공과대학 전자공학과)
  • 투고 : 2011.08.05
  • 심사 : 2011.09.01
  • 발행 : 2011.09.30
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초록

본 논문에서는 DCT 블럭에서 실행되는 멀티미디어 핑거프린팅 알고리즘을 구현한다. 제안된 알고리즘은 DRM의 한계성을 개선하고, 콘텐츠 제공자의 워터마킹과 콘텐츠 사용자의 핑거프린팅을 분리 수행함으로써 위조 및 변조된 콘텐츠의 부정자를 판단하는 책임경계를 결정할 수 있다. 콘텐츠 제공자의 $128{\times}128$ 영상에서 블록크기 $8{\times}8$에 워터마킹 삽입강도 ${\Theta}$는 0.5~1.2까지 적용하여 PSNR은 Inf~46.6dB로 측정되었으며, 콘텐츠 사용자는 블록크기 64 픽셀 범위 내에서 BIBD 기반 코드길이가 l=7,15,31,64를 사용자의 수 n=7,15,31,63에 따라 핑거프린팅 코드길이 또한 l=7,15,31,63으로 PSNR은 Inf~46.1로 측정되었다. 위조 및 변조된 콘텐츠의 부정자 추적은 n-1까지 확장되어 추적율은 1에 접근 되었다.

In this paper, it was implemented an algorithm of multimedia fingerprinting in DCT block. For the improvement of the limits of DRM’s ability, the proposed algorithm could be decided a responsibility boundary to judge a traitor who falsified the content according to perform separately a watermarking of content provider and a fingerprinting of content user. At the test image size($128{\times}128$) and block size($8{\times}8$) of the content provider, the measured PSNR is Inf~46.6dB with watermarking strength ${\Theta}=0.5{\sim}1.2$, and at a number of users and user's code length are n=7,15,31,63 and l=7,15,31,64 each, the measured PSNR is Inf~46.1 with fingerprinting code length l=7,15,31,63. Finally, a traitor tracing of the falsified content is approached to a trace ratio 1 which is extended to n-1.

키워드

참고문헌

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