Watermarking Protocol for Broadcast Monitoring

Digital watermarks have recently been proposed for the purpose of broadcast monitoring and copyright protection for multimedia content. In broadcast monitoring, an advertiser wants to inserts a unique watermark into the advertisement before it is sent to the broadcast station. In view of the fraud between advertiser and broadcast station, authentication of a video clip and an embedding watermark find application in the detected process of broadcast monitoring. For the problem of double authentication, a video watermarking protocol for broadcast monitoring is proposed. In the proposed protocol, the generation and embedding of watermark are based on the homomorphic public-key cryptosystems. Furthermore, the watermark, the advertisement and the transaction are bound according to the embedding of a unique watermark. It can not only deal with the customer´s right problem and unbinding problem, but also avoid the fraud between advertiser and broadcast station.