Algorithm for 3D Surface Model Digital Watermarking
基于3D曲面模型的数字水印算法

In this paper, we have proposed algorithm for watermarking NURBS. The algorithms do not directly embed data into the parameters of NURBS, but into the 2D virtual images extracted from the sampled points of 3D model. As a result, the watermarking algorithm can use any of existing 2D watermarking techniques when embedding data into the virtual 2D images. From the experiment, it is found that the algorithm is robust against the operations to knots and control points.