基于DWT与SVD的视频版权保护数字水印算法

Digital Watermarking Algorithm for Video Copyright Protection Based on DWT and SVD

结合离散小波变换、奇异值分解和Logistic混沌映射等相关数字水印技术,提出一种新的适用于视频版权保护的水印算法。对载体视频场景图像亮度分量进行分块奇异值分解,再取最大奇异值进行分块小波变换;最后将预处理后的水印嵌入到低频子带奇异值分解后的奇异值中。仿真实验表明,该算法具有较好的稳健性,能够应对常规的视频信号处理及几何攻击。

Proposes a new watermarking algorithm for video copyright protection, which combines discrete wavelet transform, singular value decompo-sition and Logistic chaotic mapping. The original video scene luminance component block singular value decomposition, then the maximum singular value of block wavelet transform; finally the preprocessed watermark is embedded into the low frequency sub-band of singular val- ue decomposition after singular value. Simulation results show that the proposed algorithm is robust to conventional video signal processing and geometric attacks.