一种基于无人机影像的建筑物三维模型重建方法

Research on Reconstructing 3D Building Model Method Based on UAV Images

无人机航测技术具有非接触测量、效率高、信息丰富等优点,在数字城市建设中正发挥着越来越重要的作用。本文以某建筑物为研究对象,提出了一种基于无人机影像的建筑物三维模型重建方法,首先使用无人机对建筑物的屋顶及墙面拍摄,再进行影像匹配生成密集点云;然后使用扫描仪对无人机无法拍摄的墙面进行扫描,并将扫描点云与影像生成点云配准;最后对点云预处理,再进行三角网构建,使用3ds Max构建精细化模型,并对模型进行质量评估。结果表明,该方法可以获得建筑物精细化的三维模型。

UAV aerial photography technology has many advantages such as non-contact measurement,high efficiency,information-rich,and so on,and now it is playing an increasingly important role in digital city construction.In this paper,a method of 3D building model reconstruction based on UAV image is proposed. Firstly,we acquire the roof and wall of the building by UAV,and make the image matching to generate the dense point cloud. Then,we use the terrestrial laser scanner to scan the area where can not be available by UAV,and the TLS point cloud and dense point cloud registration. Finally,the triangulation is constructed and imported into 3ds Max after preprocessing a precise 3D building model is generated and evaluated for quality. The results show that this method can get a precise 3D building model.