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MPEG-4 video watermarking technology research

Author: SuWei
Tutor: GuoLei
School: Northwestern Polytechnical University
Course: Pattern Recognition and Intelligent Control
Keywords: Video digital watermarking MPEG-4 Arts and coding Shape coding Drift compensation Synchronization template
CLC: TP309
Type: Master's thesis
Year: 2004
Downloads: 275
Quote: 4
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MPEG series of standards - oriented video watermarking technology background and technical ideas , discusses the inevitability video watermarking technology and video compression algorithm combined . Analysis of the practical significance of the MPEG-4 video watermarking research and market prospects . New technical requirements of the MPEG-4 standard video watermarking technology . Analysis of several classic literature MPEG-4 watermarking algorithm . Designed and implemented an MPEG-4 compressed domain watermarking algorithm . Spread spectrum technology to improve the security of the watermark sequence . Use synchronous templates to resist shear , scale change and rotation operations geometric distortion . The drift compensation is to eliminate the interference caused by the B - VOP motion compensation encoding and visual degradation due to the I-VOP in the AC / DC coefficient prediction and P-VOP , the watermark robust resistance format conversion attack and to ensure the quality of the visual . Using the control mechanism of the bit stream to ensure that the rate of the watermarked data . The experiments show that the algorithm after processing in the watermark video of the MPEG-4 after filtering , rotation , scale changes , code conversion coding watermark visibility and robustness achieved good results .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > General issues > Security and confidentiality
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