Geometrically Invariant Image Blind Watermarking Based on Speeded-Up Robust Features and DCT Transform

摘要

In this paper, we propose a novel robust image blind watermarking scheme based on Speeded-Up Robust Features (SURF) region and Discrete Cosine Transform (DCT). As SURF features are invariant to rotation and scaling, we employ SURF to extract feature points. Then circular patches are generated using the feature points. The watermark is embedding each circular patch based on DCT transform which can resist signal processing attacks. Multiple patches have been embedded watermark for resisting locally cropping attacks. Experimental results show that the proposed scheme is robust to both geometric attacks and signal processing attacks.