Digital Video Watermark Algorithm Based on Chaos and SVD
Hua Jiang · Jisuanji fangzhen · 2013
Combined the safe characteristic of the TD-ERCS chaotic system with the anti-geometric of the singular value decomposition(SVD),a new digital video watermarking method based on chaotic scrambling and SVD was proposed.Firstly,the embeded region in the luminance component of the video frame was selected with the help of 2-dimensional chaotic sequence of watermark scrambling produced by TD-ERCS discrete chaotic system.Secondly,the selected region was made into sub-blocks to make discrete wavelet transform and SVD was maed in the low-frequency parts.Finally,by modifying the largest singular value the watermark information was embeded.The experimental results indicate that the algorithm can provide satisfied performances,the watermark can be taken out without the original video sequence,and it also has blind detectability as well as preferable robustness to the common attacks.