一种基于时间轴小波变换的鲁棒性水印算法研究

针对视频水印常见的攻击和视频压缩攻击,文章提出了一种时间轴小波域的视频水印算法。该算法选取每个场景中连续的8帧视频嵌入水印,让8帧视频图像进行3重时间轴小波变换得到一个低频帧,通过自适应的方式将水印嵌入低频帧的DCT中低频系数中,从而有效地保证了水印的抗攻击性。实验结果表明,该视频水印系统在不可见的同时具有很强的鲁棒性和安全性。

Some Researches on Digital Watermarking Calculation of Robustness Based on WT(Wavelet Transform) Timeline

Targeting on the common attack on the watermarking of the video and video compression attack,the article sets forth digital watermarking calculation of robustness based on WT(Wavelet Transform) timeline.The method chooses eight frames consecutively from each scene bedded with watermark.And the calculation of the three fold timeline WT makes hereby a low frequency frame bedding the watermark into the low frequency data of DCT with self adaptive way to ensure the anti attack strength of the watermark.The resu...