A hybrid image watermarking scheme based on SVD and DCT

With the development of Internet and multimedia technologies, multimedia copyright protection and content authentication have become serious problems that need to be solved urgently. Digital watermarking has been regarded as an effective solution to protect various kinds of digital contents against illegal use. In this paper, a hybrid watermarking technique which combines the discrete cosine transformation (DCT) and singular value decomposition (SVD) is presented. We give the experimental results of the proposed technique against some attacks.