一种八叉树和三维R树集成的激光点云数据管理方
时间:2025-04-02
时间:2025-04-02
第41卷 第4期测 绘 学 报
Vol.41,No.4
2
012年8月Acta Geodaetica et Cartograp
hica Sinica Aug.,2
012GONG Jun,KE Shengnan,ZHU Qing,et al.An Efficient Manag
ement Method for Point Cloud Data Based on Octree and 3DR-tree[J].Acta Geodaetica et Cartograp
hica Sinica,2012,41(4):597-604.(龚俊,柯胜男,朱庆,等.一种八叉树和三维R树集成的激光点云数据管理方法[J].测绘学报,2012,41(4):597-
604.)一种八叉树和三维R树集成的激光点云数据管理方法
龚 俊1,柯胜男1,朱 庆2,钟若飞3
1.江西师范大学软件学院,江西南昌330022;2.武汉大学测绘遥感信息工程国家重点实验室,湖北武汉430079;3.首都师范大学资源环境与旅游学院,北京100048
An Efficient Manag
ement Method for Point Cloud Data Based on Octree and3D R-treeGONG Jun1,KE Shengnan1,ZHU Qing2,
ZHONG Ruofei 3
1.Department of Software,Jiangxi Normal University,Nanchang330022,China;2.State Key Laboratory of Information Engineeringin Surveying,Mapping and Remote Sensing,Wuhan University,Wuhan 430079,China;3.Capital Normal University,College ofResources,Environment and Tourism,Beijing1
00048,ChinaAbstract:Vehicle-borne laser point cloud data has become key 3D spatial information source in fields such as digital cityand crisis management.Aiming at technical bottleneck of large-scale point cloud data management,a new spatial indexmethod-3DOR-tree is presented,which integrates octree and3D R-tree.This method utilizes octree to forbid point-by
-pointinsertion and generates leaf nodes of R-tree efficiently.R-tree structure is extended to present levels of detail(LOD)generation algorithm of point cloud models.Finally,a data organization approach is put forward for large-scale p
ointcloud,which easily uses file mapping technique to accelerate data access.Experiments prove that this approach has finespace utilization and spatial query efficience with LOD representation capability and data cache mechanism,which lays asolid foundation for post-processing and comprehensive practices of large-scale point cloud data.Key
words:octree;3D R-tree;laser-scanning;point cloud;data management摘 要:车载激光扫描点云数据已经成为数字城市和危机管理等领域越来越重要的三维空间信息源,针对大规模点云数据高效管理的技术瓶颈,提出一种八叉树和三维R树集成的空间索引方法———3DOR树,充分 …… 此处隐藏:15149字,全部文档内容请下载后查看。喜欢就下载吧 ……
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