Protection of 3D Object Through Silhouette Watermarking

This paper describes a new approach for watermarking 3D objects via contour information. Unlike most conventional 3D object watermarking techniques, for which both insertion and extraction of the mark are performed on the object itself (3D/3D approach), we propose an asymmetric 3D/2D procedure. This procedure consists of watermarking 3D objects but retrieving the mark from represented views. In this paper we also propose an extension of 2D contour watermarking algorithm to 3D silhouette