A Blind Robust Watermarking Scheme for Copyright Protection of 3D Mesh Models (TA-P5)

Author(s) : Stefanos Zafeiriou (Department of Informatics Aristotle University of Thessaloniki, Greece) Anastasios Tefas (Department of Informatics Aristotle University of Thessaloniki, Greece) Ioannis Pitas (Department of Informatics Aristotle University of Thessaloniki, Greece)

Abstract : In this paper, a novel method for blind 3D mesh model watermarking applications is proposed. The method is robust against rotation, 3D translation, scaling and mesh simplifications. A pseudo-random watermarking signal is casted in the 3D mesh model by deforming geometrically its vertices, without altering the vertex topology. Prior to embedding and detection a set of simple transforms is applied to the 3D mesh model. These transformation grants the method robustness to translation and rotation. Robustness to scaling is achieved by restricting the vertex deformations to occur only along the $r$ coordinate of the corresponding r, è,ö) spherical coordinate system. Each sample of the watermark sequence is embedded in a set of vertices rather than in a single vertex in order to deal with mesh simplifications. Experimental results indicate the ability of the proposed method to deal with the aforementioned attacks.

Menu