大区域地物场景的交互绘制  

Interactive Rendering of Ground Objects in Large Area

作　　者：王林旭[1] 谢剑薇[1] 邹红霞[1] 

机构地区：[1]装备指挥技术学院信息装备系,北京101416

出　　处：《系统仿真学报》2009年第9期2625-2628,共4页Journal of System Simulation

基　　金：国家863资助项目(2002AA716133)

摘　　要：研究了大区域地理环境中地物场景的数据组织和快速绘制问题。首先,给出了基于层次四叉树组织管理大区域地物场景数据的方法;其次,描述了大区域地物场景交互绘制的流程,并对节点级视锥剔除阶段和遮挡剔除阶段进行了重点介绍。该方法便于集成到已有的实时地形绘制软件中。实验结果表明,在保证场景画面质量的前提下,集成后的系统能在微机上对大区域地理环境进行快速交互显示。The data organization and rapid rendering of ground objects in a large area geographic environment were investigated. Firstly, a hierarchical quadtree-based method of organizing the data of ground objects in a large area was proposed; Secondly, the interactive rendering process of ground objects in a large area was introduced, and the steps of view-frustum culling ofquadtree nodes and occlusion culling were described particularly. These techniques could easily be integrated into the software of terrain real-time rendering which was programmed before. Example illustrates that the integrated system can perform interactive rapid rendering of large area geographic environment on commodity PC with fine image quality.

关 键 词：大规模场景 交互绘制 层次四叉树 视锥剔除 遮挡剔除 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]