摘要
讨论基于矢量化的等高线生成数字高度图(Digital Elevation Map)的方法,并在此基础上进行三维建模,实现等高线的三维可视化,本文以线性内插为基础,采取了简化的基于等高线特性的内插方法,并提出一种等高线的快速搜索方法。该算法通过软件实现,已在铁路电力架空线路辅助设计系统平台上进行试验,实验结果证明,该算法可以大幅度提高三维地形造型速度,提高工程设计人员设计效率。
It was described a interpolation algorithm of DEM based on Vectorized contour lines and the visible technology of terrain surface production by DEM.In the process of creating Digital elevation model,a new method was proposed.It was implemented the structural features of elevation contour images.A rapidly search method in searching contour lines was also given out.The algorithm was used in Overhead Electrical Transmission Line Design System which was showed good performance on both speed and accuracy.
出处
《铁路计算机应用》
2009年第3期51-54,共4页
Railway Computer Application
关键词
等高线
三维地形
可视化技术
线性内插算法
contour
3D terrain
visible technology
linear interpolation algorithm
