无人机倾斜摄影技术在水利工程周边地形勘探中的应用

Application of Drone Tilt Photography Technology in the Surrounding Terrain Exploration of Water Conservancy Projects

受自然条件和地形条件的影响,目前地形勘探方法难以精准获取水利工程周边地形,因此提出基于无人机倾斜摄影技术的水利工程周边地形勘探方法。该方法首先确定无人机航测区域,在航测区域内布置像控点位置,采用无人机倾斜摄影技术采集水利工程周边地形影像;其次融合无人机倾斜摄影数据和激光点云数据,采用光束法联合空三测量方法,根据融合后的数据构建水利工程周边地形三维模型,完成水利工程周边地形的勘探。实验结果表明,光束法联合空三测量方法的三维重建精度高、勘探误差小、分辨率高,能够良好地应用于水利工程周边地形勘探中。

Affected by natural conditions and terrain conditions,the current terrain exploration method is difficult to accurately obtain the surrounding terrain of water conservancy projects.Proposed the water conservancy engineering peripheral terrain exploration method based on the drone tilt photography technology.This method first determines the UAV aviation measurement area,arranges an images control point position in the aviation measurement area,and uses the UAV tilt photography technology to collect the surrounding terrain images of water conservancy engineering.Secondly,the fusion of the drone tilted photography data and the laser point cloud data.The use of the beam method combined with aerial triangulation method is used to build a three-dimensional model of the surrounding terrain of the water conservancy engineering according to the fusion data to complete the exploration of the surrounding terrain of the water conservancy engineering.The experimental results show that the three-dimensional reconstruction accuracy of the method is high,the exploration error is small,and the resolution is high.