A Novel Blind Image Watermark Detection Algorithm Based on Generalized Gaussian Distribution

The technique of blind watermark is one of key technology for copyright protecting. Applying Generalized Gaussian Distribution to statistically model the Alternating Current coefficient of discrete cosine transform, an adaptive blind watermark detection algorithm is proposed on the basis of sign detector and linear correlate detector and its probability efficiency is deduced. The experimental results show that the performance of the proposed detector is better than that of linear correlate detector.