【作者】 李钢； 杨嘉斌； 张仁斌； 吴燎原； 赵凯；

【Author】 Li Gang Yang Jiabin Zhang Renbin Wu Liaoyuan Zhao Kai (School of Computer and Information Hefei University of Technology Hefei 230009 China)

【机构】 合肥工业大学计算机与信息学院；

【摘要】 针对数字水印算法中存在的不可见性和鲁棒性之间的矛盾,设计一种基于H.264的视频水印算法。该算法综合人类视觉系统特性和离散余弦变换系数的特点,采用一种简单的视觉模型自适应选择嵌入区域,通过调整系数之间关系嵌入水印;提取水印采用多数表决制。实验表明该水印算法可获得较好的不可见性,改善了水印容量,并对重压缩攻击具有一定的鲁棒性。更多还原

【Abstract】 In this paper,a novel video watermarking algorithm based on H.264 is designed,which aims at the contradiction between invisibility and robustness of digital watermarking algorithm.The algorithm integrates the characteristics of human visual system and the discrete cosine transform coefficients.Firstly,we select the embedded region adaptively by a simple visual model,then adjust the relationship between selected coefficients to embed watermark,and extract watermark by majority voting.Experiments validate that the watermarking algorithm can achieve better invisibility and improve the capacity of watermark,and it is robust to recompression attacks.更多还原