基于无人机航测的露天矿三维模型重建技术

3D model reconstruction technology of open-pit mine based on UAV aerial survey

以舟山某大型露天采石矿山为工程背景,分析了无人机航摄影像获取及处理的流程,通过Pix4D软件对无人机数据及获取的大量正射影像数据进行了图像解析处理,迅速便捷地获取了矿区空间三维信息,生成了数字表面模型和数字正射影像,并进行了精度分析。试验表明,无人机航测可较好地重建某一阶段的矿区三维模型,实现了矿区三维全景漫游,为矿山开采提供了数据支持,可用于生产进度检查纠偏,强化管理决策的科学性。

Taking the open-pit quarry in Zhoushan as the engineering background,the process of acquiring and processing UAV photography image was analyzed.The data of UAV and large amount of orthophoto data acquired were effectively processed by Pix4D software and were obtained conveniently,the three-dimensional information of the mining space was generated,and digital surface model and digital orthophoto were generated,and the precision analysis was carried out.The test showed that the UAV survey could reconstruct the three-dimensional model of the mining area at a certain stage,and realize the three-dimensional panoramic roaming of the mining area,which could provide data support for mining,and could be used to correct the production plan and strengthen the scientificity of management decision-making.