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Video Watermarking in Motion vectors Based on Visual Masking
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Digital watermarking is an effective technology for digital products copyright protection and data security maintenance as well as an important branch of information hiding technology. By virtue of this technology, copyright information is embedded in the video data to provide ownership verification. Several watermarking schemes have been proposed in recent years, but most of them deal with still images, only some being extended over to the temporal domain for video watermarking. But again most of those approaches are applied to uncompressed video processing domain. In this paper, a new compressed video watermarking procedure is explained. We propose a novel hybrid digital video watermarking scheme embedding watermark in P-frames. Search its best match block by the watermark while embedding and the embedding strength of every block in the video sequence is calculated with the set of non-linear formulas that have been proposed, according to the entropy of motion information of every macro-block and the human visual masking system. The experimental results demonstrate that this method impacts the video quality slightly but bit rate is controlled to a large extent.
Keywords
Introduction, MPEG-4 Video Compression, Related Work, Visual Masking, Video Watermarking in P-Frames, Experimental Results & performance Evaluation, Conclusion.
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