OpenGL环境下点云模型的显示变换，介绍一种标准的3D点云模型OBJ文件的特点和基本结构,在VC++6.0平台下结合OpenGL完成了OBJ格式文件的读取和点云模型的三维显示、旋转、平移、缩放变换功能.实验结果表明,利用OpenGL开发的程序可以高效实时地实现点云的各种操作.-OpenGL environment, the display of point cloud model of transformation to introduce a standard 3D point cloud models OBJ file characteristics and basic structure, in the VC++6.0 platform combines OpenGL completed the OBJ format files read and the three-dimensional point cloud model of show, rotate, pan, zoom transform function. The experimental results show that the use of OpenGL programs can be developed efficiently to achieve real-time point cloud of the various actions.