摘要
针对视频水印系统的安全性问题,提出一种基于三维小波变换的视频散列算法。该算法对预处理后的三维视频序列依次进行行方向一维小波变换、列方向一维小波变换和时间方向一维小波变换,完成视频序列的一层三维离散小波变换,并给出散列计算结果。仿真实验证明,该算法对帧内像素移动攻击及随机帧抖动攻击具有较强的鲁棒性。
A video Hash algorithm based on 3D Wavelet Transform（3D WT） is proposed to improve the security of video watermark system.Pre-processed video sequence is applied in turning row-dimensional wavelet transform,column-dimensional direction wavelet transform and time-dimensional wavelet transform,to complete three-dimensional discrete wavelet transform,and the Hash computing result is given.Experimental results show the robustness of the proposed video hash algorithm for intra-pixel moving attack and random frame jitter attack.
出处
《计算机工程》
CAS
CSCD
北大核心
2010年第19期239-240,243,共3页
Computer Engineering
关键词
视频水印
三维小波变换
视频散列算法
video watermark
3D Wavelet Transform（3D WT）
video ttash algorithm
