大规模三维地形可视化中数据组织管理影响因素探讨

Research on the affect factor of data organization and management in large-scale terrain visualization

本文通过根据海量地形数据的特点和渲染需要,提出了海量地形数据组织管理的五个影响因素,并对五个因素之间的关系进行详细讨论,还通过实验验证了各个因素的重要性。最后以最大可能地满足海量数据组织管理的五个因素为基础,利用模块化的思想设计并实现了全球多分辨率地形仿真原型系统,基于五个因素实现的绘制算法大幅度提高了海量地形数据实时绘制的速度和效率,实现了全球范围多尺度的实时三维地形绘制,在数字地球、3D GIS、战场环境仿真等领域得到了具体应用。

In this paper,during the research of the characteristics and rendering requirements of massive terrain data,we put forward five affect factor to the organization and management of massive terrain data,and explain the relationship of these factor,then prove the importance of these factor by experiment.On the base of the most satisfaction to the five fator,we design and implement ＂the Global Multi-resolution Terrain Simulation System＂ with the help of modularization,the new rending algorithm improves the rendering speed of massive terrain data,the system can realize the 3D real-time rendering via multi-resolution terrain data of the global area.The system is used widely in the field of digital earth,3D GIS and the visualization of battlefield environment.