【作者】 万杰； 刘辉； 胡敏；

【Author】 Wan Jie Liu Hui Hu Min Department of Computer and Information,Hefei University of Technology,Hefei,230009

【机构】 合肥工业大学计算机与信息学院；

【摘要】 本文提出一种基于特征点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。按照特征点的模长进行分组,用离散余弦变换将每组的模长变换到频域,在其频域信号中加入水印。实验结果表明,该算法水印具有良好的不可见性,对仿射攻击、网格简化、噪声攻击和剪切攻击等具有良好的鲁棒性。更多还原

【Abstract】 We propose a novel watermarking scheme based on feature points.The feature points for embedding watermark are detected according to the norm direction of neighbor triangles of each point.Then we group the feature points into different sections according to their modular,the sections are transformed into signal in frequency domain and embed the watermark into the signal.The experiment results show that the watermark is imperceptible and robust against various attacks such as affine attack,mesh simplification,mesh cropping,and noise attack.更多还原