一种基于特征点模长的三维网格数字水印算法  

A Watermarking Algorithm of 3D Meshes Based on Norms of Feature Points

作　　者：万杰[1] 刘辉[1] 胡敏[1] 

机构地区：[1]合肥工业大学计算机与信息学院

出　　处：《电子技术（上海）》2009年第9期72-74,共3页Electronic Technology

基　　金：安徽省自然科学基金(070412046);国家自然科学基金(60575023)

摘　　要：提出一种基于特征点模长的三维网格模型数字水印算法。该算法根据各个顶点的邻接三角面的法线方向提取用于嵌入水印的特征点;比较特征点的模长和其所有邻接点的平均模长;根据所嵌入的水印来修改特征点模长。实验结果表明,该算法水印具有良好的不可见性,对几何变换攻击、噪声攻击等具有良好的鲁棒性。We propose a novel watermarking algorithm of 3D mesh model based on norms of feature points. In this algorithm the feature points for embedding watermark are detected according to the norm direction of neighbor triangles of each point. Then we compare the norms of the feature points with the mean norms of neighbor points; modify the norms of the feature points according to the watermarking embedded. The experiment results show that the watermark of the proposed algorithm has good imperceptibility and robustness against various attacks such as affine attack, mesh simplification, mesh cropping, and noise attack.

关 键 词：特征点 三维网格 水印 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] TG839[自动化与计算机技术—计算机科学与技术]