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
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
CLC Number:
WEN Jing, HAN Xie-Fei. Video Hash Algorithm Based on 3D Wavelet Transform[J]. Computer Engineering, 2010, 36(19): 239-240,243.
文静, 韩叶飞. 基于三维小波变换的视频散列算法[J]. 计算机工程, 2010, 36(19): 239-240,243.