一种建筑结构三维重建技术的研究
投稿时间:2018-01-02  修订日期:2018-10-12  点此下载全文
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任震宇* 武汉华中科大建筑规划设计研究院有限公司 430074
中文摘要:对城市环境中建筑进行三维重构是建筑规划设计的重要前置性工作,也是提高建筑规划设计质量和效率有效技术手段。针对目前建筑三维建模算法存在的建模周期长、对复杂建筑重建效果不佳等问题,该文提出了一种基于激光雷达数据的完全自动的方法来完成具有复杂几何外形建筑物的三维重建的方法。对城市环境中建筑进行三维重构的一个难点问题在于对具有复杂结构屋顶进行三维重建,为此该文重点对所提出的建模算法中的屋顶分割方法、近似建模方法、拓扑分析方法和几何拟合方法进行详细阐述,同时还介绍了将复杂结构屋顶建模问题简化为几何图元匹配问题的创新思路。该文的建模实验结果表明,所提建模方法能够有效完成建筑物识别和三维建模,具有建模效果好、效率高以及图元库可自定义等优点。
中文关键词:三维建模,分割算法,拓扑分析,建筑拟合,屋顶建模
 
A Study on 3D Reconstruction of Building Structure
Abstract:Three-dimensional reconstruction of buildings in urban environment is an important preposition of architectural planning and design, as well as an effective technical means to improve the quality and efficiency of architectural planning and design. Aiming at the problems of long modeling period and poor effect on complex building reconstruction, this paper proposes a completely automatic method based on lidar data to complete 3d reconstruction of buildings with complex geometric shapes. Three-dimensional reconstruction of urban environment construction is a difficult problem to 3 d reconstruction of roof with complex structure, therefore this article emphasis on the proposed modeling method of roof segmentation method, approximate modeling method, the topological analysis method and the geometric fitting method in detail, and also introduces the structure of the complex roof modeling problem is simplified to the creative thinking of the geometric figure yuan matching problem. The results of the modeling experiment show that the proposed modeling method can effectively complete building recognition and 3d modeling, and has the advantages of good modeling effect, high efficiency and customizable graph library.
keywords:3D modeling, segmentation algorithm, topological analysis, building fitting, roof modeling
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