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赵云莉

（ 中煤科工集团武汉设计研究院有限公司 ，湖北 武汉 400083)

摘   要：为了获得高质量外立面三维重建模型，三维展现细节元素，研究基于BIM技术的大型建筑综合体外立面三维重建算法。运用双边滤波算法，进行大型建筑综合体外立面的初始三维点云数据去噪，结合RANSAC算法与欧式聚类算法，进行外立面三维点云数据的分割处理，得到不同平面外立面的三维点云数据，分析各平面外立面内的不同元素特征线，向BIM技术的Revit软件内导入此类元素特征线，通过函数连接同平面外立面内各元素特征线后，得到不同平面的外立面重建模型，合并后获得整体大型建筑综合体外立面三维重建模型。试验结果表明，可去除外立面初始三维点云数据内噪声，高效精准地分割不同平面的外立面三维点云数据，最终所得大型建筑综合体外立面三维重建模型整体质量较高，可清晰呈现模型内细节元素，为城市规划建设提供保障。

关键词 ：BIM 技术 ；大型建筑 ；综合体外立面 ；三维重建 ；双边滤波 ；Revit 技术

中图分类号 ：P232           

文献标志码 ：A           

文章编号 ：1005- 8249  (2023)   03- 0018- 07

DOI : 10. 19860/j . cnki . issn1005- 8249. 2023 . 03 . 018

ZHAO Yunli

( China Coal Science and Industry Group ,   Wuhan Design and Research Institute Co. ，Ltd. ，Wuhan 400083 ,   China)

Abstract: In order to obtain a high-quality 3D reconstruction model of the external facade and display the detail elements in 3D, the 3D reconstruction algorithm of the external facade of large-scale buildings based on BIM Technology is studied. The bilateral filtering algorithm is used to denoise the initial three-dimensional point cloud data of the comprehensive external facade of large buildings. Combined with the RANSAC algorithm and the European clustering algorithm, the three-dimensional point cloud data of the external facade are segmented to obtain the three-dimensional point cloud data of different plane external facades, analyze the different element characteristic lines in each plane external facade, and import such element characteristic lines into the Revit software of BIM Technology, After connecting the characteristic lines of each element in the same plane facade by function, the facade reconstruction models of different planes are obtained. After merging, the 3D reconstruction model of the comprehensive external facade of the whole large-scale building is obtained. The experimental results show that the noise in the initial three-dimensional point cloud data of the facade can be removed, and the three-dimensional point cloud data of the facade of different planes can be segmented efficiently and accurately. Finally, the overall quality of the three-dimensional reconstruction model of the comprehensive external facade of large-scale buildings is high, which can clearly show the details in the model, and provide a guarantee for urban planning and construction.

 Keywords :  BIM  technology;  large buildings ;  comprehensive exterior facade ;  3D reconstruction;  bilateral filtering;  revit technology

 

作者简介 ：赵云莉  (1980—) , 女，本科，高级建筑师，一级注册建筑师。主要研究方向：建筑设计。

收稿日期 ：2022- 06- 06