摘要
提出一种适用干多媒体流的鲁棒性水印算法,该方案将二值图像分段后经扩频调制作为水印信息分别嵌入视频帧的DCT域和音频的DCT域。实验结果表明:算法中嵌入的水印具有良好的不可觉察性,算法复杂度低,并且能够抵抗帧删除,帧插入和帧替换等攻击。对于针对音频信号的攻击,也具有良好的鲁棒性。此外,可以参照另一信号的相应信息,恢复被破坏的水印。
A robust watermarking scheme suitable for multimedia stream is presented. A binary image served as the watermark is modulated after segmentation in the way of spectrum spread,and then it is embedded into DCT （discrete cosine transform） domain of both video frame and audio. The experimental result shows that the embedded watermark in the algorithm is imperceptible and robust against attacks like frame dropping, frame swapping and frame inserting while the algorithm is of low cost. Besides, it also proves to be robust against attacks on audio signals. If a single media is badly destroyed, the watermark can also be recovered from another type of media in reference to corresponding information.
出处
《计算机应用与软件》
CSCD
北大核心
2008年第11期130-131,139,共3页
Computer Applications and Software
基金
上海市信息安全公共服务平台(qdpt2005-04)。
关键词
数字水印
扩频调制
鲁棒性
序列攻击
Digital watermarking Spectrum spread Robust Sequence attacks
