Watermarking for DIBR 3D images based on SIFT feature points

With number of advantages, depth-image-based rendering (DIBR) has became an important technology in 3D displaying, as result, more and more copyright problems will turn out. Since either the center view with depth image or the synthesized virtual views could be illegally distributed, we need to not only protect the center views but also the synthesized virtual views with a novel method. In this paper, a novel watermarking method for DIBR 3D images is proposed, by using SIFT to select the area where watermarking should be embedded, we can utilize Spread spectrum technology to embed the watermark information into the DCT coefficients of the selected area. As the experimental results shown, the proposed method is much more robust to some common signal distortion attacks with lower BER compared with existing methods.