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In this paper, we propose a new semifragile watermarking algorithm for the authentication of 3D models based on integral invariants. A watermark image is embedded by modifying the integral invariants of some of the vertices. In order to modify the integral invariants, the positions of a vertex and its neighbors are shifted. To extract the watermark, all the vertices are tested for the embedded information, and this information is combined to recover the watermark image. The number of parts ofdoi:10.1109/tvcg.2008.101 pmid:19241642 fatcat:o4fobzsmk5e4xgkipkbvlujfkm