Up to now, 3D watermarking has mainly focused on triangle meshes which are the most used digital representations of the shape of a 3D model. In this paper, we present a watermarking technique for authentication of 3D polygonal meshes. We propose a robust 3D watermarking method for high rate embedding of a watermark into 3D polygonal meshes. The proposed technique is based on spectral mesh compression, The core idea behind our technique is to apply laplacial spectral compression to each sub-mesh, the watermark embedding and extraction algorithms are applied to each sub-mesh. The proposed scheme improves the performance of the data embedding system, perceptual invisibility and it is resistant to a variety of the most common attacks.
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