一种基于H.264/AVC的鲁棒性视频水印算法的研究

依据 H.264视频编码标准提出一种视频水印方案。结合H.264帧间预测编码的特点以及人类视觉系统原理，选择P帧宏块中的MV作为水印信息嵌入的对象，对MV进行量化处理，得到两个互相独立的区域。根据水印信息的不同，修改MV，使其指向不同的区域，对其采用扩频技术来实现水印嵌入，以提高水印的鲁棒性。实验结果表明，新方案能够抵抗重编码压缩、加载噪声、旋转等多种攻击，鲁棒性良好。

Based on the H.264 video watermarking algorithm robustness

On the basis of H.264 video coding standard is proposed a video watermarking scheme. Through the analysis of the H.264 inter-frame predictive coding features, combined with H.264 interframe the characteristics predictive coding principle and the human visual system to select the MV P frame macroblocks as watermarking information embedding objects. The MV is quantified,to get two independent regions. According to the different watermarking information, through modifying the motion vector so that it points to the different regions, the spread spectrum technology is used to realize the watermarking embedding.In order to improve the robustness of watermarking. The experimental results that this scheme can resist re-coding compression, load noise, frame average attack, showing better robustness.