Content authentication based mesh model semi-fragile watermarking scheme

A content authentication based mesh model semi-fragile watermarking algorithm was proposed. In this algorithm the mesh model was divided into some blocks in which spectral analysis was separately processed. Then watermarking signals were embedded into low frequency coefficients. Experimental results show that the proposed algorithm can resist incidental data processing, such as translation, rotation, uniform scaling, and vertex coordinate quantization and mesh smoothing in low intensity. And this algorithm can also achieve localization for malicious modification in visual inspection.