A novel block-based data hiding scheme in SVD-DCT composite domain

This paper presents a robust block-based watermarking scheme for multimedia copyright protection. In this work, we used benefits of domain combination of Singular Value Decomposition (SVD) and Discrete Cosine Transformation (DCT). Our aim was to utilize the favorable properties of both transformations to design of a unique and useful transformation standard algorithm for embedding watermarks into cover data. The proposed watermarking scheme is verified from the point of view of imperceptibility expressed by objective quality measure PSNR (Peak Signal-to-Noise Ratio) and robustness to different types of removal (JPEG compression, Gaussian filtering, Sharpening) and geometric attacks (Scaling and Rotating).