Application analysis of UAV tilt photogrammetry technology in land consolidation
Unmanned Aerial Vehicle(UAV)tilt photogrammetry technology can achieve automatic and rapid acquisition of various complex topographic maps and elevation feature points,and then quickly complete the calculation of earthwork.In this paper,taking a certain area as an example,the DJI Sprit IV RTK UAV was used to fly in a"well"shape to obtain oblique photography data,and the data were processed by ContextCapture modeling software to obtain the 3D model and orthoimage data.The 3D model and other data were used to calculate the earthwork volume in EPS software,and the calculation results of earthwork volume were obtained quickly.Using RTK measured data as the true values,the reliability and accuracy of the UAV oblique photogrammetry earthwork volume calculation results were tested.The relative error of the calculated fill volume by the two measurement methods was 2.7%,and the relative error of the excavation volume was 7.8%,both of which were less than the 10%tolerance range and meet the requirements of earthwork engineering specifications.The results show that the quality of the results can meet the standard requirements,the work efficiency is high,and the production cost is low,which can provide a technical reference for land consolidation project.
万方数据
维普
