基于差分无人机的三维建模及精度分析  

Differential UAV-based 3D Modeling and Accuracy Analysis

作　　者：黄越鹏 李燕婷[1] 宁黎平[1] 张江华 Huang Yuepeng;Li Yanting;Ning Liping;Zhang Jianghua(School of Geological Engineering,Qinghai University,Xining 810016,China)

机构地区：[1]青海大学地质工程学院,西宁810016

出　　处：《青海科技》2024年第5期77-86,共10页Qinghai Science and Technology

基　　金：青海省应用基础研究项目“黄河源区极端气候变化对高寒草地生态系统的影响机制研究”(2021-ZJ-743)。

摘　　要：近年来,随着无人机技术愈发成熟,基于无人机的倾斜摄影测量技术在构建数字城市、数字校园、数字园区等数字化三维地图中得到广泛应用。该研究采用具备RTK实时差分定位技术的四旋翼无人机,搭载D-OP3000高精度五镜头相机,对某大学校园进行倾斜影像数据采集;利用RTK-GNSS静态控制测量技术在研究区内采集检查点及像控点的坐标数据。通过Smart3D建模软件进行免像控点和加入像控点两次独立的实景三维建模,并基于检查点数据进行精度分析,其中免像控点模型的3D平面与高程中误差分别为0.0645 m和0.0856 m,加入像控点的模型3D平面与高程中误差分别为0.0630 m和0.0751 m。研究表明,在免像控的条件下,模型依然具有较高的精度水平,并且可以大幅度节约人工和时间成本。In recent years,as UAV technology becomes more and more mature,UAV-based tilt photogrammetry technology is widely used in constructing digital three-dimensional maps of digital cities,digital campuses,digital parks,etc.In this study,a quadcopter UAV with RTK real-time differential positioning technology,equipped with a D-OP3000 high-precision five-lens camera,was used to collect tilted image data of a university campus.RTKGNSS static control measurement technology was utilized to collect coordinate data of the checkpoints and imagecontrol points in the study area.The Smart3D modeling software was used to carry out two independent real-life 3D modeling:one without image control points and one with added image control points,and the accuracy analysis was conducted based on the checkpoint data.The 3D plane and elevation inaccuracies of the image-control-free point models were 0.0645m and 0.0856m,respectively;and those of the image-control-added point models were 0.0630m and 0.0751m.The study showed that the model still has a high level of accuracy under image-control-free conditions,and it can greatly save labor and time costs.

关 键 词：倾斜摄影测量 免像控实景三维 实时差分定位 精度对比分析 

分 类 号：P231[天文地球—摄影测量与遥感]