摘要
提出一种构建三维地形及线路整体模型的方法 .该方法利用 DEM数据生成四边形网格对地面进行描述 ,将铁路路基剖面线覆盖到 DEM上 ,剖面线与 DEM网格线相交 ,将此交点作为新的插入点生成局部三角网 .通过集成 Auto CAD及 3
A new method for creating three dimensional overall terrain and railway line model is presented. Digital Elevation Model with quadrangular meshes is taken as the terrain background. Cross section lines of railway roadbed are overlaid onto DEM, and their intersection points with DEM meshes are used as new inserted nodes to generate local triangular meshes. Such an approach is simple to realize and highly efficient. AutoCAD together with 3DS is used to output various presentations.
出处
《计算机辅助设计与图形学学报》
EI
CSCD
北大核心
2002年第8期778-780,789,共4页
Journal of Computer-Aided Design & Computer Graphics
基金
铁道部科技基金 ( 97G2 3- F)资助
