A New Digital Video Zero-Watermarking Algorithm Against H.264 Compression
Xiao Zhang, C Echnology · Jisuanji fangzhen · 2011
Traditional digital watermarking techniques embedding the watermark into image would lead to a certain degree of distortion in video images,and it is difficult to extract watermark from attacked images,especially cannot resist the compression of H.264 with high performance.To solve the problems,an algorithm with high resistance to compression has been put forward.Through this method,the Euclidean Distance between two frames of images next to each other is worked out and then the extremal function is used to select the key frame and at last we can make secret key through changing the algorithm of watermarking based on strong relationship of DWT.And it does not change the original video signals.In simulation tests,the watermarks algorithms can effectively combat all kinds of common attacks and especially can resist the compression modes of H.264 and MPEG.It is significant to protect video copyright.