| 三维CSG-BRep拓扑模型的研究 |
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| 引用本文： | 朱春晓,黄明,倪春迪.三维CSG-BRep拓扑模型的研究[J].测绘工程,2017,26(8). |
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| 作者姓名： | 朱春晓 黄明 倪春迪 |
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| 作者单位： | 1. 黑龙江工程学院 测绘工程学院,黑龙江 哈尔滨,150050;2. 北京建筑大学,北京,100044 |
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| 基金项目： | 黑龙江省教育厅科学技术研究资助项目 |
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| 摘 要： | 针对目前通过离散点云来构建的三角网模型具有数据量大,难以拆分,没有拓扑关系等缺点,提出一种特殊的CSG-BRep模型数据结构,该数据结构可以全面细致地记录模型内部的拓扑关系。利用激光雷达点云作为模型的数据来源,结合文中提出的数据结构,构建三维精细CSG-BRep拓扑模型。该模型与普通三角网模型相比,各个构件可以拆分,所占用内存较少,并具备更完善的拓扑关系。
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| 关 键 词： | 拓扑关系 激光雷达点云 CSG-BRep模型 数据结构 |
Research on the topological model of three-dimensional CSG-BRep |
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| ZHU Chunxiao,HUANG Ming,NI Chundi.Research on the topological model of three-dimensional CSG-BRep[J].Engineering of Surveying and Mapping,2017,26(8). |
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| Authors: | ZHU Chunxiao HUANG Ming NI Chundi |
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| Abstract: | Currently ordinary triangular mesh model based on discrete point cloud has a large amount of data.This model is not only difficult to split, but also lacks of topological relations.To solve these problems, this paper presents a CSG-BRep topological model.It can record topological relationship of 3D model in great detail.Finally, LIDAR point cloud is used as a data source to construct 3D CSG-BRep topological model.Compared with the ordinary triangular mesh model, the model components can be split, which can effectively reduce the amount of data.In addition, the CSG-BRep model has the detailed topological relations. |
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| Keywords: | topological relation LIDAR CSG-Brep model data structure |
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