Study on a multifunction watermarking algorithm

Digital watermarking is deemed as a novel technique for copyright of digital products protecting and has aroused extensive interests in recent years. Based on the properties of the Karhunen-Loeve transform (K-L) and the singular value decomposition (SVD), this paper proposes a novel multifunction watermarking algorithm, the experimental results show that the watermarking algorithm has good transparency and robust, especially against the geometrical operations and JPEG lossy compression.