• 제목/요약/키워드: Bitrate-Varying Attacks

검색결과 1건 처리시간 0.016초

기하학적 공격 및 비트율 변화 공격에 강한 MPEG-2 동영상 워터마크 시스템 개발 (A Robust Watermark System for MPEG-2 Video Against Geometric and Bitrate Varying Attacks)

  • 황선철
    • 전기학회논문지P
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    • 제59권3호
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    • pp.258-262
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    • 2010
  • This paper describes a watermarking system that has the robust characteristics against the geometric attacks of resizing and the bitrate varying attacks. While the existing watermark methods of marking on AC in DCT coefficients are weak against the geometric attacks, the methods of tiny increasing the DC in DCT coefficients and the system implementations are suggested in this paper. We measure the differences between the original images and the watermarked images and the detecting rate from the geometric and bitrate attacked images. Results of experiments show that our method is robust against that attacks.