摘要
城中村通常建筑密集且视野狭小,导致测量环境复杂,限制了传统工程测量尤其是建筑物精细测绘的作业精度与效率,本文以广州市城中村为例,探索了联合倾斜摄影与激光点云建模在精细化测绘的应用。无人机倾斜摄影测量通过多角度空基观测捕捉密集建筑群落立体信息;激光扫描通过连续设置地基站获取点云数据,进行去噪、配准、分割等处理。利用Iterative Closest Point算法将点云与倾斜摄影数据配准,通过激光点云弥补倾斜摄影模型近底部遮挡区域并细化其几何细节,得到高精度城中村实景三维模型。试验结果表明,融合倾斜摄影与激光点云的三维模型可满足城中村精细化测绘要求,具有一定的应用价值。
This paper takes an urban village in Guangzhou as an example to explore the application of joint oblique photography and laser point cloud modeling in fine surveying.Drone-based oblique photogrammetry captures the three-dimensional information of dense building clusters through multi-angle aerial observations.Laser scanning,conducted from continuously set ground stations,acquires point cloud data,which is then processed for noise reduction,registration,and segmentation.The Iterative Closest Point algorithm is used to align the point cloud with the oblique photogrammetry data.The laser point cloud compensates for occluded areas near the base of the oblique photogrammetry model and refines its geometric details,resulting in a high-precision three-dimensional model of the urban village.The experimental results show that the 3D model combining tilt photography and laser point cloud can meet the needs of fine mapping in urban villages and has certain application value.
作者
马力
王德盛
张弛
杨光
黎煜昭
MA Li;WANG Desheng;ZHANG Chi;YANG Guang;LI Yuzhao(Guangzhou Urban Planning&Design Survey Research Institute,Guangzhou 510060,China;Guangdong Enterprise Key Laboratory for Urban Sensing,Monitoring and Early Warning,Guangzhou 510060,China;Colaborative lnnovation Center for Natural Resources Planning and Marine Technology of Guangzhou,Guangzhou 510060,China;Henan Geology Mineral College,Zhengzhou 451464,China)
出处
《测绘通报》
CSCD
北大核心
2024年第S02期156-159,共4页
Bulletin of Surveying and Mapping
基金
国家重点研发计划(2022YFB3904105)资助
广东省重点领域研发计划资助(2020B0101130009)
广东省城市感知与监测预警企业重点试验室基金(2020B121202019)
关键词
倾斜摄影测量
三维激光扫描
融合建模
城中村精细化测绘
oblique photogrammetry
3D laser scanning
integrated modeling
fine mapping in urban villages
