The Imperceptible Video Watermarking Based on Region of Motion Vectors in P-frames

摘要

Video watermarking is a relatively new technology that has been proposed to solve the problem of illegal manipulation and distribution of digital video. By virtue of this technology, copyright information is embedded in the video data to provide ownership verification .We propose a novel hybrid digital video watermarking scheme embedding watermark in P-frames. In this method, the region information of the motion vector is used to hide copyright information. In the process of encoding every macro block, search its best match block by the watermark and the embedding strength of every block in the video sequence is calculated with the set of non-linear formulas that have been used, 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.