均衡特征的动态视频水印算法  

Dynamic Video Watermarking Algorithm with Balanced Features

作　　者：郑秋梅[1] 杨亚男 王风华[1] 林超 曹学文[3] ZHENG Qiumei;YANG Yanan;WANG Fenghua;LIN Chao;CAO Xuewen(College of Computer Science and Technology,China University of Petroleum(East China),Qingdao 266580,Shandong,China;Information Construction Department,China University of Petroleum(East China),Qingdao 266580,Shandong,China;College of Pipeline and Civil Engineering,China University of Petroleum(East China),Qingdao 266580,Shandong,China)

机构地区：[1]中国石油大学(华东).计算机科学与技术学院,山东青岛266580 [2]中国石油大学(华东)信息化建设处,山东青岛266580 [3]中国石油大学(华东)储运与建筑工程学院,山东青岛266580

出　　处：《济南大学学报（自然科学版）》2021年第1期1-9,共9页Journal of University of Jinan(Science and Technology)

基　　金：国家自然科学基金项目(61305008);中央高校基本科研业务费专项资金项目(19CX02030A);山东省自然科学基金项目(ZR2018MEE004)。

摘　　要：针对现有视频水印算法大多性能单一,无法兼顾不可见性、鲁棒性和水印容量等问题,提出一种均衡特征的动态视频水印算法;首先,利用颜色直方图差值法从视频序列中提取关键帧;其次,对关键帧和水印图像分别进行非下采样Contourlet变换、离散余弦变换以及离散平稳小波变换;最后,利用伪随机生成器随机生成水印嵌入块,在确定嵌入因子后,利用加性准则将水印信息自适应嵌入到动态块的低频子带系数,实现水印的嵌入。结果表明,该算法在保证水印不可见的前提下,不仅提高了水印的嵌入容量,而且对抵抗常见时、空域攻击具有较好的鲁棒性。Aiming at the problem that most existing video watermarking algorithms had single performance and could not give consideration to invisibility,robustness,and watermark capacity,a dynamic video watermarking algorithm with balanced features was proposed.Firstly,key frames were extracted from the video sequence by using the color histogram difference method.Secondly,non-subsampled Contourlet transform,discrete cosine transform,and discrete stationary wavelet transform were performed on key frames and watermark images.Finally,the watermark embedding block was generated randomly by using the pseudo-random generator.After determining the embedding factor,the watermark information was adaptively embedded into the low-frequency sub-band coefficient of the dynamic block using the additive criterion to achieve the embedding of the watermark.The results show that the algorithm not only improves the embedding capacity of watermarks while ensuring the invisibility of watermarks,but also has good robustness against common temporal and spatial attacks.

关 键 词：版权保护 均衡特征 非下采样CONTOURLET变换 水印嵌入块 视频水印 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]