并基于等高线矢量数据建立不规则三角网，再内插格网生成DEM点阵数据。
A triangulated irregular network(TIN) is constructed based on vector data, and DEM point-array data is computed by interpolating grid on TIN.
论述了从地形图中提取等高线、对等高线矢量化以及通过矢量数据生成高程数据的实现方法。
In this paper, the methods of drawing contour line from terrain map, the vector of contour line and generating elevation data from vector data are discussed.
通过矢量化提取等高线和高程点作为基础数据，构建三维地形。
Contour lines and elevation points are obtained by vectorization as basic data, which can be used to build three-dimension terrain.
应用推荐