Robust watermarking scheme based on RDWT-SVD: Embedding data in all subbands

In this paper, a new method for non-blind image watermarking presented that is robust against affine transformation and ordinary image manipulation. The proposed method presents a watermarking scheme based on redundant discrete wavelet transform (RDWT) and Singular Value Decomposition (SVD). After applying RDWT to cover image, we apply SVD to each subband. Then we modify singular values of the cover image using singular values of the visual watermark. The advantage of the proposed technique is its robustness against most common attacks. Analysis and experimental results show higher performance of the proposed method in comparison to the DWT-SVD method.