根据导入得dem（固定路径），生成等值线图（2维），是地形图绘制，DTM三维可视化较好的例子，但要转三维还要继续努力！-According to import must dem (a fixed path), generate the contours (2-D) is the topographic mapping, DTM three-dimensional visualization of a better example, but to change to 3D must continu

3D地形模拟与漫游。DTM。可以设置投影方式、天空效果、地形显示方式、场景雾化。有C++源代码，结合openGL。-3D terrain simulation and roaming. DTM. Can set the projection, the sky effects, terrain display, the scene atomization. A C++ source code, combined with openGL.

环境编程，用于环境编写，三维地形可视化等3D导入，仿真模拟-environment in C++

Multispectral remotely sensing imagery with high spatial resolution, such as QuickBird, IKONOS satellite imagery or Aerial imagery, especially in urban scenes, often perform spectral variations and rich details within a category, resulting in