A Transformed-Matrix Asymmetric Watermarking Scheme

Based on matrix transformation, an asymmetric image watermarking scheme is presented in this paper. First, a pair of keys is given by using matrix transformation; second, the image is watermarked in its transformation domain, and third, our analysis shows that this simple scheme provides security from any attempts to erase the watermarked signal in watermark detection; and finally, the relation between the transformed matrix and the random embedding sequences is discussed. The test result shows that the proposed scheme satisfies the characters of convenient realization, low complexity of the detection algorithm and better security