An Associated Technique Under Wavelet Transform for Digital Watermark Embedding and Detection

An associated pseudorandom sequences technique,which is used in encryption watermark embedding and dedecting is proposed for multimedia copyright protection.Since the embedded data is associated with the embedded position,the watermark is not easy to be attacked.Covariance is used to detect watermark,which may reduce the influence of chaos.The discussion of the watermark's hidden ability and robustness shows that the technique has satisfied result,so it can be widely used.