A Method for LOD Generation of 3D City Model Based on Extended 3D R- Tree Index
Automatic LOD generation is the difficult problem in computer graphics and 3D GIS. This paper presents a new method to generate the LOD Model It utilizes the hierarchical structure of R-tree to integrate LOD model In order to decrease the objects to be rendered, the view frustum culling algorithm is also put forward. The method extends the structure of Rtree, which can manage objects in the intermediate nodes. From bottom to top, the objects in the different layers can be generated. Then, LOD parameters of layers also are defined respectively. Experiments prove that this method is of great benefit to the practice of 3D GIS, and especially fits the building LOD representation.
R-tree LOD 3D query
GONG Jun Zhang Hanwu
School of Geography and Environment Jiangxi Normal University Nanchang, China
国际会议
上海
英文
2059-2063
2011-07-26（万方平台首次上网日期，不代表论文的发表时间）