基于视频帧的彩色水印嵌入算法研究

Research on Color Watermarking Algorithm Based on Video Frames

为了增强水印的内容认证性,提出了视频帧中嵌入彩色水印的算法.先分别选取I帧的单色通道做DCT变换,分块后提取奇异值,将彩色水印的对应通道层做DWT变换,对低频区域置乱后提取奇异值,再将水印奇异值嵌入到载体奇异值中,然后由三色通道合成水印视频图像.最后进行了攻击实验,实验结果表明,该算法具有较好的水印提取能力和一定的鲁棒性.

In order to improve the content authentication of watermarking, an algorithm on color watermark embedding in video frames is presented, choosing every channel of I-frame to do DCT respectively, and extracting singular values after each blocked, then, choosing the color watermark corresponding channel to do DWT, and extracting singular values after scrambling on low frequency, after that putting watermark singular values into carrier ones according to the algorithm and acquire watermark video image by reconstructing three color channels. Attack experiments have been done, and the results show that the algorithm has a better extracting ability and certain robustness.