面向应用的3维虚拟场景技术研究

Research on Application-Oriented 3D Virtual Scene

随着GIS的不断发展,地形的3维立体显示已成为主流,但传统方法生成模型过程复杂、真实感不强,无法在应用中提供足够的信息量。本文所述的3维虚拟场景生成方法,从实际应用出发,以真实地形地貌为标准,形成了一套完整的生成虚拟地形、地物、模拟天空的流程,并进行可视化实验。实验结果表明,使用该方法能够对实际场景进行仿真,模拟地物、植被的分布,达到小数据量实现3维虚拟场景的目的。最后,对所生成的示范系统进行验证分析,表明该方法简单、快速,对林业小班划分、农业土地管理等多个领域都有一定的实际参考价值。

Along with the increasingly developing of GIS. 3D solid displayed topography has become the main flow. It＇s well - know that the tradition method has several weak points,namely the model gemeration too complicated,short of real situation and cant provide enough information. The paper describes a new method to generate 3D virtual scene. This method can generate a set of virtual topography and features. Then visualization experiments are realized. The results show the method can emulate the real scenes, simulate the distribution of features and vegetation,and can only use minimal data to realize a 3D virtual scene. In the end based on the analysis of the generated demonstrational system, the method is simple and tast,and has reference value for forest working group division and agricaltural land management etc.