The invention provides an unmanned aerial vehicle and three-dimensional laser scanning combined earth dam deformation monitoring method, which comprises two steps of data fusion and data correction: S1, three-dimensional laser scanning and unmanned aerial vehicle fusion: taking a high-precision point cloud obtained by three-dimensional laser scanning as a remote ground control point TCP of an unmanned aerial vehicle to reconstruct an unmanned aerial vehicle model; and S2, using an ICP algorithm to correct the fused data, after reconstruction of the unmanned aerial vehicle model in the first step, correcting the unmanned aerial vehicle model, using the ICP algorithm to carry out accurate registration on point clouds in different spatial positions. According to the invention, the registration of the data mainly takes a high-precision point cloud obtained by three-dimensional laser scanning as a reference, and the precision of the unmanned aerial vehicle in the vertical direction can be greatly improved. Through the above two steps, the precision of the unmanned aerial vehicle three-dimensional model in the horizontal and vertical directions is greatly improved, and the method can be used for earth and rockfill dam deformation monitoring.
本发明提供一种无人机和三维激光扫描联合的土坝变形监测方法,包括数据融合和数据修正两个步骤:S1.三维激光扫描和无人机的融合,将三维激光扫描得到的高精度点云,作为无人机的远程地面控制点TCP来重建无人机模型;S2.利用ICP算法对融合数据进行修正,经过第一步无人机模型的重建后,对无人机模型修正,采用ICP算法进行,将不同空间位置中的点云进行精确的配准。本发明数据的配准主要是以三维激光扫描得到的高精度点云作为参考,能够极大地提高无人机在垂直方向上的精度。通过以上两步,将实现无人机三维模型在水平和垂直方向的精度的极大提升,可用于土石坝变形监测。
Earth dam deformation monitoring method combining unmanned aerial vehicle and three-dimensional laser scanning
一种无人机和三维激光扫描联合的土坝变形监测方法
2023-03-07
Patent
Electronic Resource
Chinese
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