Robust Watermarking Scheme Based on Singular Value of Decomposition in DWT Domain

Digital watermarking is an effective way to protect copyright. Using the characteristics of discrete wavelet transform (DWT) and singular value decomposition (SVD), a digital image watermarking algorithm based on DWT and SVD is proposed. The original image is transformed by DWT and SVD and the watermarking image is processed by Arnold transform and SVD. The watermarking image processed is embedded the original image decomposed. Then the image embedded by watermarking is gained through the corresponding transform. Tests show that the algorithm has a very high feasibility, and has a good robustness.