Robust Image Watermarking Scheme Based on Phase Features in DFT Domain and Generalized Radon Transformations

In this paper, a robust digital image watermarking scheme based on phase features in DFT domain and generalized Radon transformations is proposed. Within the framework of zero watermarking, the scheme selects the phase information in DFT domain as feature of image, and uses generalized Radon transformations to indentify the geometric transformations. From the experimental results, it shows that the proposed scheme is robust not only to common image processing, but also to the geometric transformations. Due to the robustness of the selected phase feature from DFT domain, the scheme is also robust to locally geometric transformations.