A Hybrid Watermarking Scheme Using Walsh Hadamard Transform and SVD
Sara Helal, Nema Salem
Abstract
With the development and advent of Internet communications and multimedia technology, it is of high importance to secure the digital media, including audio, video, speech, and images. In fact, watermarking technique provides an efficient solution to this problem. However, for an effective watermarking of data, several important requirements need to be met, such as transparency, low computational cost, robustness, and security. In this work, a robust hybridized medical images watermarking approach based on Walsh Hadamard Transform (WHT ) and singular value decomposition (S VD) is presented. Both of the host image and the watermark images were modified with singular values obtained by the (S VD) approach. The simulation results demonstrate that this proposed watermarking framework is highly robust and achieves high peak signal to noise ratio (PS NR) and high structure similarity index (S S IM).