Abstract: Various digital image watermarking techniques have been proposed by researchers from time to time. In this paper, a noval image watermarking is proposed (DSAWM) based on DWT-SVD and chaos based encryption using Arnold cat map. The DWT-SVD approach is used to increase the robustness while encryption helps in making the watermark more secure. From the simulation results, it can be concluded that DSAWM algorithm gives better result for rotation, noise and JPEG compression attacks as compared with other relevant work.

Keywords: Robust, Watermarking, Discrete Wavelet Transform, Singular Value Decomposition and Arnold Cat Map.