A Novel Secure Video Watermarking for Broadcast Monitoring

Authentication of a video clip via its hash finds application in broadcast monitoring. For broadcast monitoring,a novel algorithm for computing a robust hash from video clips,being secret key based,is proposed based on the 3-D Discrete Wavelet Transform(3D-DWT) and median quantization. The proposed hash algorithm is shown to be remarkably robust against video modifications and lossy compression. On the basis of the video hashing,a secure video watermarking scheme for broadcast monitoring is put forward. In the proposed scheme,the short hash and copyright information are combined to create the embedding watermark. And they are used in the authentication of video clips. Some analyses and experimental results show that the proposed scheme has a good security and robustness.