A Wide Range Of Complex Scenes In Real Time Rendering Techniques Of 3d Gis

The real-time display is the one of the important problem of 3D GIS and VR system,it is the basis of VRGIS. Being an important research direction of the domain of computer graphics, it has got the extensive application in environment simulation, digital campus, technique training etc.This paper study the key technique of the large-scale and complicated field to the characteristic of artificial environment. After analyzing the level of details and culling technique,we bring up a valid algorithm for realizing real-time display. Synthesized the discussion of concretely technique in data construction of model, we give out a practical efficiently project to the large-scale and complicated field for real-time display,and realized the information system of airport .It resolved the real-time display problem while the reality of environment is being maintain.In this paper we also study the structure of the geometry model which present in the project of the information system for capital airport, the structure of program. Then we introduced the interface of interaction at our project.