基于岩溶洞穴复杂表面的三角网格拼接与融合方法研究  

Splicing and Fusion of Triangular Meshes for Complex Surface of Karst Cave

作　　者：柏宏强 夏永华[1,2] 杨明龙 李照永[3] 龙丽娟 Bai Hongqiang;Xia Yonghua;Yang Minglong;LiZhaoyong;Long Lijuan(Faculty of Land Resources Eugineering,Kuuming University of Sciene and Technology,Kunming,Yunnan 650093,China;Surveying&Mapping Technology and Application Research Center on Plateau Mountaius of Yunna Higher Edxcatior,Kunming,Yunna2650093,Chia;Kunming Urban Undergrouad Space Plauring and Management Office,Kuming,Yunnan 650011,China)

机构地区：[1]昆明理工大学国土资源工程学院,云南昆明650093 [2]云南省高校高原山区空间信息测绘技术应用工程研究中心,云南昆明650093 [3]昆明市城市地下空间规划管理办公室,云南昆明650011

出　　处：《激光与光电子学进展》2020年第15期237-244,共8页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(41861054);宜良九乡风景区三角洞洞内三维建模测绘项目(KKF0201856026);三维激光扫描和室内定位技术在地下空间信息化中的应用研究(KKF0201956004)。

摘　　要：基于岩溶洞穴复杂表面提出三角网格的拼接与融合方法。首先,通过三角网格空间的几何关系遍历出两个拼接网格边界,找出待拼接边界;其次,采用约束Delaunay三角网格法进行连接并采用B样条插值使连接处过渡自然;最后,采用Uplacian原理进行平滑与消峰处理.使表面光滑。实验结果表明,该方法在岩溶洞三角网格拼接与融合方面能够实现高效自动化,能够减少人工干预;拼接融合完成后的三角网格可导出,以供后续工程设计使用,在工程应用中具有一定的参考价值。We propose a method of the combination of splicing and fusion based on the complex surface triangular mesh of karst caves.First,the two boundaries of the mesh to be spliced are found by traversing the spatial geometric relationship of the triangular mesh.Second,the constrained Delaunay triangular mesh method is used to connect different meshes and the B-spline interpolation is used to make the connection transition natural.Finally,the Laplacian principle is used for smoothing and eliminating the peaks to smoothen the edges,Experimental results show that the proposed method can achieve high-efficiency automation in the splicing and fusion of the triangular mesh of karst cave and can reduce human interventions,After the completion of splicing and fusion,the triangular mesh can be exported for the subsequent engincering design,which could be used as a reference for the development of engineering applications.

关 键 词：遥感 岩溶洞穴 三角网格 拼接与融合 B样条插值 消除峰值 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]