| 基于TIN的公路三维表面模型建立方法 |
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| 引用本文： | 黄雄,刘学军.基于TIN的公路三维表面模型建立方法[J].现代测绘,2006,29(2):6-8. |
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| 作者姓名： | 黄雄 刘学军 |
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| 作者单位： | 1. 长沙理工大学,公路工程学院,湖南,长沙,410076;南京师范大学,地理科学学院,江苏,南京,210097
2. 南京师范大学,地理科学学院,江苏,南京,210097 |
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| 基金项目： | 国家自然基金项目(40571120) |
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| 摘 要： | 公路三维表面模型是公路三维设计的基础,其关键是设计模型和地表模型的叠加运算。本文提出了一种基于TIN的地面模型和道路设计模型叠加算法,基本原理是把参考模型的边界多边形当作约束边界线插入操作模型,在保持参考模型拓扑关系不变的条件下对其进行局部LOP优化,然后删除位于参考模型边界线内的点和三角形。本文算法具有实现简单、速度快和运算稳定的特点,已成功应用在公路三维可视化设计中。
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| 关 键 词： | 三角不规则网(TIN) 道路表面模型 叠加 三维可视化 |
| 文章编号： | 1672-4097（2006）02-0006-03 |
A Method of Building 3D Highway Surface Model Based on TIN |
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| Huang Xiong,Liu Xuejun.A Method of Building 3D Highway Surface Model Based on TIN[J].Modern Surveying and Mapping,2006,29(2):6-8. |
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| Authors: | Huang Xiong Liu Xuejun |
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| Institution: | 1 Highway Engineering College of Changsha Technology and Science University, Changsha 710069, China; 2 Geography Science College of Nanjing Normal University, Nanjing 210097, China |
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| Abstract: | Road surface model is basis of highway three dimension design,the key is the overlaid compute of design model and terrain model.This paper presents an overlaid algorithm of road design model(referred as reference model) and digital elevation model(named as operation model) which are based on triangular irregular network(TIN).The principle of the algorithm is firstly extract the boundary of reference model and operation model,then insert boundary of reference model into operation model and thirdly optimize the operation model by Local Optimization Procedure(LOP) under the condition of keeping the topological relationship of reference model.The last step is to remove the triangles and terrain points which are fall into reference model.The advantage of the algorithm in this paper is simple,fast and steady. |
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| Keywords: | Triangular irregular network(TIN) Road surface model Overlaid Three dimensional visualization |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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