The Design And Implementation Of Three Dimensional Terrain ―Real Time Walkthrough System Based On Microcomputer And OpenGL

摘要

In a three dimensional terrain real time walkthrough system, the terrain can be observed and developed in a different view interactively. This paper presents the design and implementation of three dimensional terrain real time walkthrough system based on microcomputer. It adopts OpenGL, the API of a three dimensional graphics stabdard for international industry, digital elevation model (DEM) and remote sensing image to generate realistic landscape. In order to get effect of high-speed rendering and dynamic interaction, this system extracts the terrain data based viewpoint and provides a convenient user interface. The system can achieve good performance on the quality of landscape ahd the speed of rendering.