基于三维激光扫描与无人机倾斜摄影技术对异形建筑三维建模的融合应用

Fusion Application of 3D Modeling of Special-Shaped Buildings Based on 3D Laser Scanning and UAV Tilt Photography Technology

利用三维激光扫描技术以及倾斜摄影测量技术进行实景三维建模是常用的技术手段,通过2种手段获取的点云数据对空间方面的展示效果及精度存在差异,尤其在测量目标是结构复杂、材质特殊的异形建筑物时,2种技术所获取的点云数据各有优劣势,保留2种点云数据表现较好的部分,再通过多个空间同名公共点进行转换、匹配,将2种点云数据融合。以较具代表性的异形建筑物——厦门“鸟巢”建筑为例,分别利用三维激光扫描技术以及无人机倾斜摄影测量技术对其进行数据采集以及内业处理,并对2种技术的优缺性及融合后生成的三维模型精度进行分析、探讨,为应对复杂测量环境下对目标建筑物进行实景三维建模提供一种新的思路。

The use of 3D laser scanning technology and oblique photogrammetry technology for real-world 3D modeling are commonly used technical methods.The point cloud data obtained by the two methods have different spatial display effects and accuracy,especially when the measurement target is complex in structure and material.For special shaped buildings,the point cloud data obtained by the two technologies have their own advantages and disadvantages.The better performance of the two point cloud data is retained,and then multiple spaces with the same name are used to convert and match the two points.Cloud data fusion.This article takes the more representative special-shaped building-the"Bird's Nest"building in Xiamen as an example.It uses 3D laser scanning technology and drone tilt photogrammetry technology to collect data and internal processing,and analyzes and discusses the advantages and disadvantages of the two technologies and the accuracy of the 3D model generated after fusion,in order to deal with complex measurements It provides a new idea for real-world 3D modeling of the target building in the environment.