Abstract:

This paper analyses and studies the least-squares interpolation mathematical model. With the search methods of the search circle, the DEM data are generated from gathering discrete points using the C# language and the OpenGL dynamic link library,and visualization is realized from the 2D contour line to the 3D virtual terrain, and the visual effects are compared and analysed. The results of visualization show the operator is fast and sharp. To a certa  in extent, the research achievements have some referential value to generating a virtual battlefield environment on computers.