基于双重水印加密和SVD的视频水印方案

摘要

According to the security of video watermarking,a video watermarking scheme based on dual watermark encryption and SVD is proposed. Firstly, scrambling the watermark image, after the scrambling watermark through Chebyshev chaotic mapping is encrypted, guarantee the security of the watermark; then, the video key frames conduct three wavelet transform, Using SVD invariance of geometric distortion, the watermark is embedded into LL3, HL3 and LH3, 3 times. Experimental results show that the algorithm has good robustness to noise attack 、MPEG compression and shear.%针对视频水印的安全性，提出了一种基于双重水印加密和SVD的视频水印方案。该方法首先将水印图像经Arnold置乱，对置乱后的水印通过Chebyshev混沌映射进行加密，保障水印的安全性；然后，对视频关键帧进行三级小波分解，利用SVD对几何失真的不变性，将水印3次嵌入到LL3、HL3和LH3中。实验表明该方案对高斯噪声、MPEG压缩、剪切等具有较高的鲁棒性。