3) The paper introduces the principle of 3D observing and technologies of drawing reality sense figure in detail, and realizes the real-time 3D visualization of road and terrain surface based on OpenGL technology.

• 3) 详细地介绍了三维空间观察原理和真实感图形绘制技术,基于OpenGL实现了道路地形真实感场景的动态浏览。