3D Reconstruction Method and Experiment of Aerial Survey of Low-altitude UAV for Open-pit Mine

doi:10.13474/j.cnki.11-2246.2018.0082

Abstract

Abstract:

With the popularity of unmanned aerial vehicle(UAV) application and the improvement of the performance of digital camera,it is possible to use UAV with a digital camera to rapidly acquire the aerial survey video of the mine area and get 3D data which conforms to the precision by combining with control points.This paper introduces a low-cost,fast and efficient 3D reconstruction method of open-pit mine,which adopts mapping eagle X100 with a SONY a7R digital camera to conduct field data collection,uses C++ and OPENCV with a small amount of ground control points to conduct the bundle adjustment,and then adopts PMVS algorithm to generate dense point cloud.Through the experiments in open-pit mine,the results show that the DOM and DSM error in the plane is ±0.113 m,mean square error of height is ±0.121 m,adjacent feature point spacing error is ±0.151 m,which all meet the accuracy requirements of the national standard of 1:500 topographic map.

Key words: UVA aerial survey, open-pit mine, 3D reconstruction, bundle adjustment

CLC Number:

P231

LI Changqing, CAO Minglan, LI Yadong, WU Shenglin. 3D Reconstruction Method and Experiment of Aerial Survey of Low-altitude UAV for Open-pit Mine[J]. 测绘通报, 2018, 0(3): 89-92.

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