基于内容认证的网格模型半脆弱数字水印算法  

Content authentication based mesh model semi-fragile watermarking scheme

作　　者：徐涛[1] 张艳宁[1] 

机构地区：[1]西北工业大学计算机学院,西安710072

出　　处：《吉林大学学报（工学版）》2008年第2期429-433,共5页Journal of Jilin University:Engineering and Technology Edition

基　　金：高等学校博士学科点专项科研基金项目(20040699034)

摘　　要：提出了一种用于内容认证的网格模型半脆弱数字水印算法。网格模型被分割为若干块后,在各块内分别进行频谱分析,水印信号被嵌入到低频系数中。实验结果证明,该算法可抵抗非恶意的正常数据处理,如平移、旋转、各向一致缩放、低强度的顶点坐标量化和光滑处理,对于恶意攻击可实现篡改位置可视化定位标记。A content authentication based mash model semi-fragile watermarking algorithm was proposed. In this algorithm the mesh model was divided into some blocks in which spectral analysis was separately processed. Then watermarking signals were embedded into low frequency coefficients. Experimental results show that the proposed algorithm can resist incidental data processing, such as translation,rotation, uniform scaling, and vertex coordinate quantization and mesh smoothing in low intensity. And this algorithm can also achieve localization for malicious modification in visual inspection.

关 键 词：计算机应用 三维水印 网格水印 半脆弱水印 内容认证 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]