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基于DEM的三维地形绘制，通过四叉树实现LOD细节层次结构(DEM-based three-dimensional terrain rendering by Quadtree LOD hierarchy details)

计算单应矩阵，输入为2D图像坐标点和3D世界坐标点，输出为3x3单应矩阵(Calculate homography)

说明：  三维地形实时动态显示的核心代码---来自<<Visual C++ 编程技巧典型案例解析>>(Real-time dynamic display of three-dimensional topography of the core code--- from <<Visual C++编程技巧典型案例解析>>)

斯坦福大学开发的一个三维点云重构生成网格，进一步生成NURBS曲面并加光照效果的系统。可以实现对生成的三维图形旋转，移动和多个角度图形的拼接(Stanford University in the development of a 3D point cloud generation reconfigurable mesh, NURBS surface generation further increases and the effect of illumination system. Generation can be achieved on the 3D graphics rotation, movement and different angles graphics Mosaic)

四步相移法程序和最小二乘法相位解包裹程序，已经验证，此方法比较不错。(Four step phase-shift method program and least squares phase solution package, have validation, this method is good. )

2D凸多边形的三角网格生成，可用gridgen。(2D triangular convex polygon mesh generation, available gridgen.)

3d与 vc opengl 的结合 ，对初学者的帮助应该很大(Vc opengl and 3d combination of help for beginners should be great)

单图像和多图像三维重建，基于theano包的一个重建代码，够20个子了吗(3d reconstruction from both single and muti image)

一个简单的osg，可以在配置好环境后直接运行测试一下( a simple osg code)

PLY文件的读取和写入程序：PLY文件是一个三维图形的数据存储格式，包括了三维曲面上所有采样点的坐标，以及所有采样点间的网络拓扑(A program which can read and write a PLY file)