[1]徐苏维,盛业华,王永波,等.一种基于顶点曲率的三维实体表面模型加密算法[J].南京师范大学学报(工程技术版),2005,05(03):090-94.
　XU Suwei,SHENG Yehua,WANG Yongbo,et al.An Algorithm of 3D Entity Surface Model Interpolation Based on the Vertex Curvature[J].Journal of Nanjing Normal University(Engineering and Technology),2005,05(03):090-94.
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一种基于顶点曲率的三维实体表面模型加密算法
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南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
05卷
期数:
2005年03期
页码:
090-94
栏目:
出版日期:
2005-09-30

文章信息/Info

Title:
An Algorithm of 3D Entity Surface Model Interpolation Based on the Vertex Curvature
作者:
徐苏维; 盛业华; 王永波; 白世彪; 刘平
南京师范大学地理信息科学江苏省重点实验室, 江苏南京210097
Author(s):
XU Suwei; SHENG Yehua; WANG Yongbo; BAI Shibiao; LIU Ping
1.Jiangsu Provincial Key Lab of Geographic Information Science, Nanjing Normal University, Jiangsu Nanjing 210097, China
关键词:
三维实体表面模型;  三角网格;  数据加密;  vtk
Keywords:
3D en tity surface m ode; l triang le m eshes;  data dense;  v tk
分类号:
TP391.4;
摘要:
利用空间少数点通过内插方法使数据加密来模拟真实的三维实体表面模型一直是国际上的研究热点之一.Crust算法是一种基于计算几何中的Voronoi周期图的曲面重建算法,算法简单,重建结果精细,但由于计算量太大,其应用受到了限制.采用基于顶点曲率的原理,提出了一个三角网内插的曲面重建算法:即由TIN形成的三维空间数据,计算每个三角网的权重(曲率权重、角度权重),然后求出每个三角形质心,再利用一系列原理对质心进行纠正,得出新的内插点,最后由用户设定加密点数的百分比,根据权重大小来重建三维实体表面.还给出了一组三角网加密模型实例以说明该方法的有效性.
Abstract:
Few er spec ia l po ints are used to sim ulate the true 3D en tity surface m ode ,l by u in terpolation denses, w hich has a lw ay s been the hot issue bo th a t hom e and abroad. The Curst a lgor ithm is a surface reconstruction a lgorithm on the bas is o fVorono imap in calculation geome try. It is s imp le and the reconstructed result is ve ry fine. H oweve r, it is a tim e-consum ing wo rk, and thus is lim ited in its application The paper presents a su rface reconstruction algor ithm for triang le meshes interpo lation by using the princ iple o f vertex curva tures, and acco rding to the spac ia l data, calcu lates the w eigh t o fm esh and each triang le. s centro id and rectifies it by using a ser ies o f pr inciples, and las-t ly, the user can m ake a percent to reconstruct the surface of entity. The paper also g iv es an examp le o f densed surfacem ode l to illustrate e fficiency of the m ethod based on v tk.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目: 南京师范大学人才基金资助项目( 2004105XGQ2646) .
作者简介: 徐苏维( 1981-) , 女, 硕士研究生, 主要从事地图学与地理信息系统的学习和研究. E-m ail:swxu1116@ 126. com
通信联系人: 盛业华( 1965-) , 教授, 博士生导师, 主要从事摄影测量与遥感、GIS、虚拟地理环境等方面的研究.E-m aill:shengyehua@ n jnu. edu. cn
更新日期/Last Update: 2013-04-29