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。

关键词: 视频水印, 三维小波变换, 视频散列算法

Abstract: 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.

Key words: video watermark, 3D Wavelet Transform(3D WT), video Hash algorithm

中图分类号: 

• TP391