摘要
针对大面积的平原带状区域,使用飞马V100垂起无人机进行航摄,对POS数据采用后差分进行处理,然后利用“Agisoft Photoscan”软件进行解算。通过试验,探讨了像控点密度对航摄精度的影响。对于DOM成果,只需少量的像控点就可满足精度要求。像控点密度对于DEM的影响较大,但当像控点达到一定数量时,继续增加像控点密度,对DEM精度的提高并不明显。本文总结了一种适合平原地区布设像控点的方案,可供其他工程参考。
Aiming at the large area of plain belt area,the Pegasus V100 vertical UAV is used for aerial photography,the POS data is processed by post difference,and then the"Agisoft Photoscan"software is used for solution.Through experiments,the influence of image control point density on aerial photography accuracy is discussed.For DOM results,only a few image control points are needed to meet the accuracy requirements.The density of image control points has a great influence on DEM,but when the number of image control points reaches a certain level,increasing the density of image control points does not obviously improve the accuracy of DEM.This paper summarizes a scheme suitable for the layout of image control points in plain areas,which can be used as a reference for other projects.
作者
焦元元
孙昌瑜
JIAO Yuanyuan;SUN Changyu(Jilin Institute of Geographic Information,Changchun 130062,China;Jilin Province Water Resource and Hydropower Consultative Company,Changchun 130012,China)
出处
《测绘与空间地理信息》
2023年第10期186-188,共3页
Geomatics & Spatial Information Technology
关键词
像控点
空三加密
DOM
DEM
image control point
aerial triangulation
DOM
DEM
