基于倾斜摄影和点云数据的区域地震反应可视化研究

Visualization of regional seismic response based on tilt photography and point cloud data

高效、真实的区域地震响应可视化对应急响应具有重要意义,为此,提出一种高效的区域建筑物地震响应可视化框架。采用无人机(UAV)进行倾斜摄影,预处理采用最小二乘法进行建筑物坐标提取和采用聚类算法进行点云数据分割,建立了用于建筑结构时程位移分析的简化多自由度MDOF模型,然后利用MDOF模型匹配建筑物点云模型进行可视化,并以山西省某地区为例进行案例研究,验证了所开发框架的可行性。

Efficient and realistic visualization of regional seismic response is of great significance for emergency response,for this reason,an efficient framework for visualizing seismic response of regional buildings is proposed.Unmanned Aerial Vehicle(UAV)is used for tilt photography,preprocessing uses least squares for building coordinate extraction and clustering algorithm for point cloud data segmentation,a simplified multi-degree-of-freedom(MDOF)model is established for time-range displacement analysis of the building structure,and then the MDOF model is used to match the point cloud model of the building for visualization,and a case study is carried out for an example of a certain area in Shanxi Province to validate the development of the The feasibility of the developed framework is verified.