Wavelet-based blind watermarking of 3D models

Watermarking of 3D meshes has received a limited attention due to the difficulties encountered in extending the algorithms developed for 1D (audio) and 2D (images and video) signals to topological complex objects such as meshes. Other difficulties arise from the wide variety of attacks and manipulations 3D watermarks should be robust to. For this reason, most of the 3D watermarking algorithms proposed so far adopt a non-blind detection. In this paper we present a new blind watermarking algorithm for 3D meshes. In order to simultaneously achieve watermark imperceptibility and robustness a multiresolution framework is adopted. To do so we assume that host meshes are semi-regular ones, a property that permits to first perform a wavelet decomposition and then to embed the watermark at a suitable resolution level. Watermark detection is accomplished by computing the correlation between the watermark signal and the tobe-inspected mesh. Robustness against geometric transformations such as r...

• Type: Conference
• Year: 2004
• Where: MMSEC
• Authors: F. Uccheddu, Massimiliano Corsini, Mauro Barni
• Keywords: Blind Watermarking Algorithm, MMSEC 2004, Watermark, Watermarking Algorithm