Building Deformation Monitoring Method Based on UAV Photogrammetry
This paper creatively proposes to apply the UAV oblique photogrammetry technology to the dynamic deformation monitoring of building structures. Firstly, the differential UAV photogrammetry system is used to obtain images and accurate camera station infor-mation; Then, in the process of aerial triangulation, a comprehensive geographical reference method is proposed, and the GNSS auxil-iary beam adjustment model is established to reduce the number of reference control points; Finally, the 3D point cloud is established, the identification point information is picked up by the region growth segmentation method, and the coordinates of the identification center point are obtained based on MATLAB to realize the automatic measurement of the building structure. The experiment carried out deformation monitoring for some building structures of a power station project, and verified the feasibility of applying UAV oblique pho-togrammetry technology to building deformation monitoring. The results show that this method meets the third and fourth order meas-urement accuracy requirements, and the demand for control points is significantly reduced compared with the traditional methods. It can be used as a safe and efficient means of building dynamic monitoring.
photogrammetrybuilding structure3D point clouddynamic monitoring
万方数据
维普
