视频哈希的性能分析与测试  

Performance Analysis and Test of Video Hash

作　　者：刘丽[1] 李晓举 李玲玲[1] 

机构地区：[1]郑州航空工业管理学院计算机科学与应用系 [2]党委宣传部,郑州450015

出　　处：《计算机工程》2012年第6期236-237,240,共3页Computer Engineering

基　　金：河南省科技厅基础与前沿技术研究计划基金资助项目(112300410215);河南省教育厅科学技术研究基金资助重点项目(12A520046);河南省教育厅科技攻关基金资助项目(2010B510021);河南省高等学校青年骨干教师基金资助项目(2011GGJS-138)

摘　　要：针对视频哈希中的单向性、唯一性以及鲁棒性等问题,对基于三维离散小波变换(3D-DWT)的视频哈希算法进行数学建模,利用密码学中的无条件安全性,证明该哈希算法具有单向性。计算参考哈希序列与所求哈希序列的汉明距离的概率密度,证明基于3D-DWT和基于三维离散余弦变换的视频哈希算法,在同等条件下均具有唯一性。结合理论和实验结果,分析2种算法在不同攻击下的鲁棒性,得出视频哈希的唯一性和鲁棒性是相互制约的结论。For unidirectional, uniqueness and robustness of robust video hashing, mathematical model is built for the video hashing scheme based on the 3D Discrete Wavelet Transform（3D-DWT）, and the unidirectional of the scheme is proved, using the unconditionally secure of cryptology. It computes the probability density of hamming distance between the referenced hashing sequence and the calculated hashing sequence, and proves theoretically the uniqueness of the video hashing scheme based on 3D-DWT and the scheme based on 3D Discrete Cosine Transform（3D-DCT） under the same condition. According to the theoretical and experimental results, analyze the robustness of the two schemes under different attacks and conclude that the uniqueness and robustness of video hash are interact on each other.

关 键 词：数字水印 视频哈希 单向性 唯一性 鲁棒性 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]