基于Pix4Dmapper的无人机低空摄影测量数据处理
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摘要
随着科技发展,无人机的使用就像汽车一样应用于各个领域,成熟的航空摄影测量理论为无人机在测量方面的使用提供了坚实的基础,而后处理成像软件通过提供三维模型来实现数据的精确可视化,更进一步提高了无人机的有效性。本文利用航空摄影测量的中心投影原理,提出基于Pix4Dmapper的无人机低空摄影测量数据处理流程,对经过空中三角测量和相机校准的航摄像片经过光束法区域网平差、空三加密、点云编辑、滤波处理,生成高精度的Google瓦片、正射影像图(DOM)、三维点云模型、数字表面模型(DSM)、数字高程模型(DEM)、数字地面模型(DTM),经过多次应用表明:处理成果能够满足应用需求,极大促进了摄影测量技术的发展。
With the development of science and technology,the use of unmanned aerial vehicle( UAV) is applied to various fields like automobile,mature aerial photogrammetry theory for unmanned aerial vehicle in use of measurement provides a firm foundation,and the image processing software by providing the 3D model to realize accurate visualization of data,further improve the effectiveness of the unmanned aerial vehicle. In this paper put forward UAV with low-altitude aerial photogrammetry data processing flow using the principle of the aerial survey projection based on Pix4Dmapper,data processing of aerial triangulation and camera calibration of aerial photograph through the bundle block adjustment,three-dimensional triangulation,point cloud editing,filter processing,generate high precision Google tiles,digital orthophoto map( DOM),3D point cloud model,digital surface model( DSM),digital elevation model( DEM),digital terrain model( DTM),after a lot of application shows that processing results can satisfy the application requirements,greatly promote the development of the photogrammetry technology.
With the development of science and technology,the use of unmanned aerial vehicle( UAV) is applied to various fields like automobile,mature aerial photogrammetry theory for unmanned aerial vehicle in use of measurement provides a firm foundation,and the image processing software by providing the 3D model to realize accurate visualization of data,further improve the effectiveness of the unmanned aerial vehicle. In this paper put forward UAV with low-altitude aerial photogrammetry data processing flow using the principle of the aerial survey projection based on Pix4Dmapper,data processing of aerial triangulation and camera calibration of aerial photograph through the bundle block adjustment,three-dimensional triangulation,point cloud editing,filter processing,generate high precision Google tiles,digital orthophoto map( DOM),3D point cloud model,digital surface model( DSM),digital elevation model( DEM),digital terrain model( DTM),after a lot of application shows that processing results can satisfy the application requirements,greatly promote the development of the photogrammetry technology.
引文
[1]李德仁,李明.无人机遥感系统的研究进展与应用前景[J].武汉大学学报:信息科学版,2014,39(5):505-506.
[2]Mancini F,Dubbini M,Gattelli M,et al.Using Unmanned Aerial Vehicles(UAV)for High-Resolution Reconstruction of Topography:The Structure from Motion Approach on Coastal Environments[J].Remote Sensing,2013,5(12):6 880-6 898.
[3]Harwin S,Lucieer A.Assessing the accuracy of georeferenced point clouds produced via multi-view stereopsis from Unmanned Aerial Vehicle(UAV)imagery[J].Remote Sensing,2012,4(6):1 573-1 599.
[4]毕凯,李英成,丁晓波,等.轻小型无人机航摄技术现状及发展趋势[J].测绘通报,2015(3):27-31.
[5]Clark A.Small unmanned aerial systems comparative analysis for the application to coastal erosion monitoring[J].GeoResJ,2017(13):175-185.
[6]林卉,王仁礼.摄影测量学基础[M].北京:中国矿业大学出版社,2013.
[7]Barazzetti L.Parametric as-built model generation of complex shapes from point clouds[J].Advanced Engineering Informatics,2016,30(3):298-311.
[8]Micheletti N,Chandler JH,Lane SN.Investigating the geomorphological potential of freely available and accessible structure-from-motion photogrammetry using a smartphone[J].Earth Surface Processes and Landforms,2014(40):473-486.
[9]Shortis MR,Bellman CJ,Robson S,et al.Stability of Zoom and Fixed Lenses used with Digital SLR Cameras.The International Archives of the Photogrammetry[J].Remote Sensing and Spatial Information Sciences,2006(36):285-290.
[10]Turner D,Lucieer A,Wallace L.Direct georeferencing of ultrahigh-resolution UAV imagery[J].IEEE Transactions on Geoscience and Remote Sensing,2014(52):2 738-2 745.
[2]Mancini F,Dubbini M,Gattelli M,et al.Using Unmanned Aerial Vehicles(UAV)for High-Resolution Reconstruction of Topography:The Structure from Motion Approach on Coastal Environments[J].Remote Sensing,2013,5(12):6 880-6 898.
[3]Harwin S,Lucieer A.Assessing the accuracy of georeferenced point clouds produced via multi-view stereopsis from Unmanned Aerial Vehicle(UAV)imagery[J].Remote Sensing,2012,4(6):1 573-1 599.
[4]毕凯,李英成,丁晓波,等.轻小型无人机航摄技术现状及发展趋势[J].测绘通报,2015(3):27-31.
[5]Clark A.Small unmanned aerial systems comparative analysis for the application to coastal erosion monitoring[J].GeoResJ,2017(13):175-185.
[6]林卉,王仁礼.摄影测量学基础[M].北京:中国矿业大学出版社,2013.
[7]Barazzetti L.Parametric as-built model generation of complex shapes from point clouds[J].Advanced Engineering Informatics,2016,30(3):298-311.
[8]Micheletti N,Chandler JH,Lane SN.Investigating the geomorphological potential of freely available and accessible structure-from-motion photogrammetry using a smartphone[J].Earth Surface Processes and Landforms,2014(40):473-486.
[9]Shortis MR,Bellman CJ,Robson S,et al.Stability of Zoom and Fixed Lenses used with Digital SLR Cameras.The International Archives of the Photogrammetry[J].Remote Sensing and Spatial Information Sciences,2006(36):285-290.
[10]Turner D,Lucieer A,Wallace L.Direct georeferencing of ultrahigh-resolution UAV imagery[J].IEEE Transactions on Geoscience and Remote Sensing,2014(52):2 738-2 745.