Blind transform-based multiplicative watermarking through a hierarchical prior

In this work we propose the application of a hierarchical prior for the multiplicative image watermarking problem. More specific, we propose new watermark detectors by modeling transform coefficients with the proposed prior. We also investigate the detector’s performance compared with known state of the art methods. Additionally, we demonstrate the robustness of the proposed detectors against watermark attacks. Key-Words: watermark detection, multiplicative watermarking, wavelet domain, hierarchical prior