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基于VRGIS的建筑物体筛选漫游算法研究

Wandering Arithmetic of Objects Based on VRGIS

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【作者】 王杰张友静窦炜

【Author】 WANG Jie~1, ZHANG You-jing~2, DOU Wei~2(1.Nanjing Vocational and Technical College of Communications, Nanjing, Jiangsu 210032, China; 2.College of Water Resources and Environmental Engineering, Hohai University, Nanjing, Jiangsu 210098, China)

【机构】 南京交通职业技术学院河海大学水资源与环境学院河海大学水资源与环境学院 南京210032南京210098南京210098

【摘要】 建筑物及室内物体是数字地球中的一种重要现象,在数字城市中占有十分重要的地位。建筑物室内漫游的算法,一直是个热点、难点。VRGIS中,室外物体漫游算法很难应用于室内,必须解决从室外到室内的漫游问题。作者结合VRML漫游的特点,综合引入PVS、LOD思想,提出了一种筛选漫游的方法,较好的解决了室内漫游的资源耗费问题。

【Abstract】 Buildings and indoor objects are the very important phenomenon in digital earth. They are important in digital city. The wandering arithmetic of indoor objects is a hotspot and difficulty for many years. It is difficult to apply the arithmetic of outdoor objects to indoor objects. A new method is needed. In this article, the author combines the feature of VRML with the idea of PVS and LOD, to put forward a method of filter wandering. The experiment shows that it can deal with the problem in a better way.

【关键词】 数字城市虚拟现实VR-GIS潜在可见性集合细节层次
【Key words】 digital cityVRMLVR-GISPVS