摘要
对压缩视频的图像帧的亮度分量进行小波提升分解,将水印数据嵌入到其低频子带的DCT系数中;利用混沌系统对水印图像进行置乱,再嵌入到原始载体图像帧中。由于置乱变换消除了水印像素间的空间相关性,使得算法的安全性和抗攻击能力进一步提高。实验结果表明,该算法易于实现,符合视频水印实时性的要求。
In this paper,the scrambled watermark is embedded in DCT coefficients of low-frequency sub image with the Brightness Component of original color image after lifting wavelet transformation.Before embedding the watermark,the image confusion method is used to eliminate the space correlation of the pixels and improvs the security and robustness.The results showed that the algorithm is easy to carry out with the real-time reqest of video watermarking.
出处
《计算机与数字工程》
2012年第4期99-101,共3页
Computer & Digital Engineering
基金
商洛学院科研项目基金(编号:10sky1007)资助
关键词
混沌系统
小波提升
DCT系数
压缩视频
chaotic system
wavelet lifting
DCT coefficients
compressed video