摘要
随着无人机测绘精度的逐步提高和倾斜摄影测量技术的发展,在三维模型的基础上进行大比例尺地形图测绘已成为可能。基于轻小型无人机大疆精灵4 Pro单镜头摄影测量系统,制定城区1∶500地形图的整体技术流程,首先制作测区倾斜模型,讨论不同数量像控点对三维模型精度的影响,采用实测数据检验模型成果,在不低于3个控制点的情况下,所建模型的平面与高程点位中误差都可达到城区1∶500地形图测制精度要求。最后尝试借助清华山维EPS地理信息工作站测图软件,在三维模型的基础上采集地物要素,完成试验区1∶500地形图的测制工作。文中的研究成果可为城区1∶500地形图的测制及更新提供借鉴。
With the development of UAV oblique photogrammetry technology and UAV mapping precision,it has become possible to map large-scale topographic maps based on 3D model.This paper designs the overall technical process of measuring urban 1∶500 topographic map with the help of light small UAV DJI Phantom 4 Pro single lens photogrammetry system.First,the oblique model was made for the test area,and then the influence of adding different number of image control points on the precision of 3D model results was discussed.The model results were tested with measured data.The results show that the errors in the plane point and elevation of the model meet the requirements of 1∶500 topographic map measurement accuracy at least need three control points.Finally,this paper tries to collect the ground feature to complete the measurement and production of 1∶500 topographic map of the test area with the help of Qinghua Sunway EPS mapping software.The research results in this paper can provide a reference for the measurement and update of the 1∶500 urban topographic map of the area.
作者
韩友美
艾林
刘东明
闫鹏
许延昌
HAN Youmei;AI Lin;LIU Dongming;YAN Peng;XU Yanchang(College of Marine Technology and Mapping,Jiangsu Ocean University,Lian Yungang 222005,China)
出处
《测绘工程》
2023年第4期51-58,共8页
Engineering of Surveying and Mapping
基金
江苏省海洋科技创新资助项目(JSZRHYKJ202201)
江苏省六大人才高峰项目(KTHY-045)。
关键词
轻小型无人机
大比例尺地形图
实景三维
倾斜摄影测量
模型精度
Light and small UAV
large scale topographic map
real-world 3D
oblique photogrammetry
model accuracy
