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http://dx.doi.org/10.13089/JKIISC.2008.18.1.149

A Watermarking Algorithm of 3D Mesh Model Using Spherical Parameterization  

Cui, Ji-Zhe (Copyright Protection Research Institute, Sangmyung University)
Kim, Jong-Weon (Copyright Protection Research Institute, Sangmyung University)
Choi, Jong-Uk (MarkAny Inc)
Abstract
In this paper, we propose a blind watermarking algorithm of 3d mesh model using spherical parameterization. Spherical parameterization is a useful method which is applicable to 3D data processing. Especially, orthogonal coordinate can not analyse the feature of the vertex coordination of the 3D mesh model, but this is possible to analyse and process. In this paper, the centroid center of the 3D model was set to the origin of the spherical coordinate, the orthogonal coordinate system was transformed to the spherical coordinate system, and then the spherical parameterization was applied. The watermark was embedded via addition/modification of the vertex after the feature analysis of the geometrical information and topological information. This algorithm is robust against to the typical geometrical attacks such as translation, scaling and rotation. It is also robust to the mesh reordering, file format change, mesh simplification, and smoothing. In this case, the this algorithm can extract the watermark information about $90{\sim}98%$ from the attacked model. This means it can be applicable to the game, virtual reality and rapid prototyping fields.
Keywords
Watermarking; Mesh Model; Spherical Parameterization; Subdivision; Simplification;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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