Secure Video Watermark Algorithm in Broadcast Monitoring
Peng Dai-yuan · Jisuanji gongcheng · 2010
This paper analyses double authentication of a video clip and a watermark in application of broadcast monitoring.For the problem of double authentication,a secure video watermark algorithm for broadcast monitoring is proposed based on the 3D Discrete Wavelet Transform(3D-DWT) .A robust hash is computed from video clips,and video hash and copyright information are signatured by secret key.The short hash and the signature using the proposed algorithm are combined to create the watermark to be embedded,and they are used in the double authentication of video clips and the embedding watermark respectively.Analysis and experimental results show that the algorithm has good security and robustness for broadcast monitoring.