摘要
3D产品包括DLG、DEM、DOM,为基础地理信息数据重要组成部分。传统大比例尺DLG生产一般采取外业实测方式,DEM,DOM生产采用航空摄影测量方式。为克服传统大比例尺3D产品生产成本高、效率低的问题,本文提出基于无人机倾斜摄影测量技术的3D产品一体化制作方法。首先,利用无人机倾斜摄影技术获取多角度影像。然后,利用集群技术自动化建立高精度实景三维建模。在此基础上进行大比例尺3D产品的一体化生产。经过质量检查,3D产品均满足相关规范要求,为基础地理信息数据快速更新提供了保证。
3D(three-dimensional)products including DLG(Digital Line Graphic),DOM(Digital Orthophoto Map),DEM(Digital Elevation Model),are an important part of basic geographic information data.Traditionally,the method of field measurement is adopted for large scale DLG production.The method of aerial photogrammetry is usually applied in DEM and DOM production.Aim at the problems of high cost and low efficiency of traditional large scale 3Dproducts acquisition methods.The paper proposes an integrated production of large-scale 3D products based on UAV oblique photogrammetry.Firstly,multi-angular images were obtained according to oblique photogrammetric technique.After the operation of aerial triangulation and 3D construction,the real 3D model is achieved.On these base,integrated production of large 3D products was done.Through the statistical analysis of 3D products accuracy,its precision completely meets the requirements of large-scale data specification,which provides a technical guarantee for rapid and efficient data revision of basic geographic information.
作者
闻彩焕
王文栋
WEN Caihuan;WANG Wendong(Hebei Institute of Surveying and Mapping of Geology,Langfang 065000,China)
出处
《测绘与空间地理信息》
2021年第8期55-58,共4页
Geomatics & Spatial Information Technology
基金
河北省省级科技计划资助(20375901D)
河北省地矿局科技资助项目(454-0601-YBN-191V、454-0502-JBN-DV4Z)资助。
关键词
基础地理信息数据
倾斜摄影测量
3D产品
basic geographic information data
oblique photogrammetry
3D products
