Watermarking for 3D mesh model using patch CEGIs

Authors:
Suk-Hwan Lee;Ki-Ryong Kwon
Affiliations:
Department of Information Security, Tongmyong University of Information Technology, Pusan, Republic of Korea;Division of Digital and Information Engineering, Pusan Univ. of Foreign Studies, Pusan, Republic of Korea
Venue:
ICCSA'05 Proceedings of the 2005 international conference on Computational Science and Its Applications - Volume Part II
Year:
2005

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Abstract

This paper proposes a watermarking for 3D mesh using the CEGI distribution that is robust against mesh simplification, cropping, vertex randomization, and rotation. In the proposed algorithm, a 3D mesh model is divided into patches using a distance measure, then the watermark bits are embedded into the normal vector direction of the meshes that are mapped into cells with large complex weights in the patch CEGIs. The watermark can be extracted based on two watermark keys, the known center point of each patch and a rank table of the cells in each patch. Experimental results verified the robustness of the proposed algorithm based on watermark extraction after various types of attack.