A Reversible Watermarking Scheme for 3D Meshes

Authors:
Dan Wu;Guozhao Wang
Affiliations:
Department of Mathematics, China Jiliang University, Hangzhou, P.R. China 310018;Department of Mathematics, Zhejiang University, Hangzhou, P.R. China 310027
Venue:
AMT '09 Proceedings of the 5th International Conference on Active Media Technology
Year:
2009

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Abstract

Reversible watermarking is suitable for hiding data in 3D meshes, because it can remove the embedding-induced distortions after extracting the hidden bits. This paper proposes a novel reversible watermarking scheme based on the difference expansion and the difference shifting. Since the 3D mesh includes a sequence of vertices, we embed the watermark into the vertex coordinates by modifying the differences between the adjacent vertex coordinates. The scheme can keep the mesh topology unchanged, and need not record the extra information. The experimental results show that the proposed scheme achieves good performance of the imperceptibility and high-capacity data embedding.