Naked Eye Mapping Of Large Scale Topographic Map For Uav Photogrammetry

The rapid development of unmanned aerial vehicle(UAV)technology and non-metric camera technology has strongly promoted the progress of low-altitude photography technology.With the continuous improvement of the intelligence of the corresponding mapping software platform,human-computer interaction has become more and more concise and friendly.At the same time,the development of social economy requires higher update speed of surveying and mapping data.However,the traditional aerial photography stereo mapping requires the collection of surface features with the aid of stereo glasses and special aerial surveying knowledge,which greatly limits the popularization and application of UAV low-altitude photogrammetry technologyIn this thesis,the technological process and scheme of naked-eye stereo mapping are discussed by using UAV low-altitude photography platform.On this basis,the technological process and scheme of naked-eye stereo mapping integrated with field and internal data processing of UAV low-altitude photography are studied.The main research work includes:(1)This thesis introduces the theoretical basis of low-altitude photogrammetry by UAV and the related knowledge of UAV flight platform,which provides the theoretical basis for large-scale topographic mapping of low-altitude photogrammetry by UAV(2)To meet the needs of large-scale topographic mapping in UAV low-altitude photogrammetry,a set of technical flow and scheme of naked-eye stereo mapping from UAV field data acquisition to internal data processing is designed.(3)Taking the 1:500 topographic map mapping of a test area in Zibo City as an example,387 images of 10 routes in the test area were acquired by UAV.Through the joint data processing of Pix4Dmapper and EPS software,the main content and representation method of the full element layer of the 1:500 large-scale topographic map were designed,the information collection of the ground feature elements under the naked-eye stereo mapping was completed,and the result map of the 1:500 large-scale topographic map mapping of the test area was acquired,including DSM,DOM,DLG,etc.;In addition,the accuracy was verified by field investigation,and it concludes that the large-scale topographic map surveying and mapping result map completed by the technical method constructed in this thesis fully meets the accuracy requirement of 1:500 topographic map surveying and mapping.Through surveying and mapping a 1:500 scale topographic map of a typical survey area,this paper designs a set of simple and easy-to-operate implementation scheme and technical process of naked-eye stereo mapping from field flight to indoor mapping,which provides a feasible and easy-to-operate technical process and method for organizations or individuals who need aerial photogrammetry but lack relative hard core professional knowledge of aerial photogrammetry.