基于“流”机制的实时多分辨率模型结构  

A streaming-based real-time multi-resolution model structure

作　　者：迟忠先[1] 匡亚明[1] 杨白新[1] 杜金莲[1] 任志民[1] 

机构地区：[1]大连理工大学软件工程研究室,辽宁大连116024

出　　处：《大连理工大学学报》2004年第4期602-605,共4页Journal of Dalian University of Technology

摘　　要：大规模地形的实时显示技术已成为虚拟仿真领域中的研究热点.为研究更合理的多分辨率模型的表达技术,结合漫游时视景体内数据的流动变化特征,提出了使用4棵四叉树表达的地形多分辨率的模型结构;并运用动态数据调度策略实现对数据以"流"的方式进行处理和绘制.该模型已在自行开发的三维地形仿真系统(Sei3D)中得到成功的应用,并最终实现了海量地形数据的无缝漫游.Real-time rendering technology for large-scale terrain is now becoming a hotspot in the field of visual simulation. To find a better expression of the technology of the multi-resolution representation, a structure formed by four quadtrees is presented noticing the fact that the data flow into and out of the viewer. The structure can treat and render data based on streaming using dynamic data scheduling. This structure has been applied to 3D visual simulation system (Sei3D) successfully and the roaming of non-gap in a lot of terrain data is finally achieved.

关 键 词：多分辨模型 四叉树 视景体 大规模地形 三维地形仿真系统 动态数据调度策略 

分 类 号：P208[天文地球—地图制图学与地理信息工程]