基于GeoFusion的三维地形和目标模型调度显示研究

Research on 3D terrain and target models scheduling based on GeoFusion

针对大型场景的实时绘制问题,提出了一种基于GeoFusion的三维可视化技术。首先分析了GeoFusion三维视景平台的基本情况及对用户应用程序的支持,详细阐述了三维地形数据的坐标转换、格式转换和生产制作处理流程,结合GeoMa-trix给出了地形调度显示方法,建立了DSM三维目标模型,提出了三维目标模型的调度算法。开发了仿真系统,并通过实例表明了所提地形和目标模型创建及调度显示算法能够实现实时调度和场景的实时显示,并保证了场景的真实感。

Aiming at the problems of real-time rendering on big scene,a three dimension（3D） rendering technology based on GeoFusion is presented.Firstly,the basic situation and the support to user applications of 3D scene rendering platform are analyzed.The disposal flow of coordinate transition,format transition and manufacture are expatiated.And then the terrain display methods linked up with Geo-Matrix are given.Later,digital surface models of 3D targets are constructed,and the schedule strategies are proposed.In the end,the simulation system is designed,and the modeling and schedule of terrain and target are validated by practical application.It is pointed that the algorithms can implement real-time scheduling and real-time scene display,and the image quality is also satisfying.