基于DTM计算并生成三维道路模型

Calculating and Building Three-dimensional Road Model Based on DTM

通过综合分析将DTM(Digital Terrain Mode)应用于道路工程的相关研究,提出一种改进的“方向搜索”三角网简化算法;并根据道路的带状特征,建立了边——三角形的拓扑关系;基于Windows平台,利用分治算法和逐点插入算法,采用VC++的MFC和OPENGL语言编程,实现基于DTM计算并生成道路和地形整体三维模型。经测试,证明本文提出的计算理论合理、简单、且执行效率高。

By synthetically analyzing the interrelated research on using DTM（Digital Terrain Mode） 1or a road project, a compact way of the improved ＂direction search＂ triangle net is put forward, then according to the sheet character of a road, the topology relation of edge-triangle is built. Based on Windows flat, using the method of polarization and the method of point-by-point insert, and adopting MFC of VC ＋ ＋ and OPENGL language programming, the integral three-dimensional model are calculated and built based on DTM. By testing, it is proved that the calculation theory put forward in this article is reasonable, simple, and high efficient.