摘要
为了保护数字视频知识产权,提出一种基于视频序列空域DCT变换和时域DWT变换的数字水印算法。首先在HSV空间上对原始视频每帧做DCT变换,从中提取出亮度分量的低频系数,并对其做时间轴上的DWT得到序列的高通成份和低通成份。对水印图像做了基于混沌理论的置乱加密,通过DWT将彩色水印图像的高、低频信息多分辨地嵌入宿主视频序列中。在水印重构过程中不需调用原始视频。对所提出的视频水印算法进行了较充分的攻击测试实验,实验结果表明了本文算法具有较强的鲁棒性。
In this paper, a spatial-temporal watermarking algorithm is proposed based on the spatial 2D DCT in frame and temporal DWT between frames. In the process of watermark embedding, DWT, which is used to extend color watermark image to an image twins, embed the watermarking information into the static and the dynamic components of the host video sequence [0 ]. In addition, the watermark image is encrypted base on chaos theory. The experimental results demonstrate the effectiveness and robustness of the proposed algorithm.
出处
《中国体视学与图像分析》
2006年第4期307-310,共4页
Chinese Journal of Stereology and Image Analysis
基金
深圳市科技计划项目200424资助
关键词
数字视频水印
版权保护
时空结合
Digital video watermark
copyright protection
spatial-temporal
