摘要
高大建筑物密集分布的城市区域难以进行大量像控点布设,在一定程度上影响了倾斜摄影三维建模精度,通过分析像控点数量以及不同定向方法对建模精度的影响,设计4种单一定向方案和2种组合定向方案,分别构建实验区三维模型,并分析模型精度差异,结果表明:少量像控点结合RTK或PPK组合定向方法建模精度相对较高,与密集像控点建模精度差异较小,远高于少量像控点和无像控点建模精度;且组合定向方法三维模型整体误差分布较为均匀,抗干扰能力较强,同时少量布设的像控点降低了野外测量工作量,有效提升了倾斜摄影建模效率,为现代化城市三维基础数据底座建设提供了可靠的技术方法。
In urban areas with dense distribution of tall buildings,it is difficult to arrange a large number of image control points,which affects the 3D modeling accuracy of oblique photography to a certain extent.In this paper,we analyzed the number of image control points and the influences of different orientation methods on the modeling accuracy,designed four single orientation schemes and two combined orientation schemes to construct 3D models of the test area respectively,and analyzed the differences in model accuracy.The results show that the modeling accuracy of a small number of image control points combined with RTK or PPK is relatively high,which is little different from that of a dense image control point and is much higher than that of a small number of image control points and no image control points.Moreover,the overall error distribution of 3D model of combined orientation method is relatively uniform,and the anti-interference ability is strong.At the same time,the small number of image control points deployed reduces the workload of field measurement,effectively improves the efficiency of oblique photography modeling,and provides a reliable technical method for the construction of 3D basic data base in modern cities.
作者
胡书友
李瑞红
HU Shuyou;LI Ruihong(Guangdong Surveying and Mapping Engineering Co.,Ltd.,Guangzhou 510700,China)
出处
《地理空间信息》
2024年第10期83-86,共4页
Geospatial Information
基金
广东省科技计划资助项目(2018B020207002)。
关键词
倾斜摄影
三维模型
像控点
单一定向
组合定向
oblique photography
3D model
image control point
single orientation
combined orientation
作者简介
第一作者:胡书友(1991-),本科,工程师,主要从事测绘工程生产与研究工作,E-mail:hsy9111@21cn.com;通信作者:李瑞红(1989-),本科,工程师,主要从事工程测量、地理信息系统、国土调查等方向的生产与研究工作,E-mail:lrh8907@21cn.com。
