地理空间信息2025，Vol.23Issue(12)：17-21,81,6.DOI:10.3969/j.issn.1672-4623.2025.12.004
基于贴近摄影测量的边坡无控制点毫米级形变监测方法
Millimeter-scale Deformation Monitoring Method of Slopes Without Ground Control Points Based on Nap-of-the-Object Photogrammetry
摘要
Abstract
Slope deformation monitoring plays a vital role in preventing geological hazards and ensuring the safety of hydraulic engineering struc-tures,particularly by enabling early detection of subtle displacements.UAV photogrammetry,capable of acquiring ultra-high-resolution imagery,enables detailed characterization of slope micro-topography and addresses the limitations of traditional aerial photogrammetry in terms of both accuracy and efficiency.However,existing methods typically rely on ground control points(GCPs),requiring separate bundle adjustment for multi-temporal imagery,which increases field workload,costs,and operational complexity.We proposed a GCP-free,millimeter-precision slope deformation monitoring method based on nap-of-the-object photogrammetry.By integrating GNSS/RTK data,with block bundle adjustment,we derived 3D coordinates of monitoring targets,and corrected systematic errors between epochs using stable features as reference points,allowing extraction of true deformation.Field experiments conducted on a hydraulic slope along the Dengzhou section of the South-to-North Water Diver-sion Project demonstrate that the method achieves a deformation monitoring accuracy of 3.35 mm without GCPs,validating its potential and applicability for high-precision deformation monitoring in hydraulic engineering.关键词
无人机影像/贴近摄影测量/边坡形变监测/无地面控制点Key words
UAV image/nap-of-the-object photogrammetry/slope deformation monitoring/without GCP分类
天文与地球科学引用本文复制引用
钟良,张娅婷,邓邦龙,魏伶芸,陶鹏杰..基于贴近摄影测量的边坡无控制点毫米级形变监测方法[J].地理空间信息,2025,23(12):17-21,81,6.基金项目
基于无人机的高精度渠坡变形监测技术方法研究项目 （）
清江库坝区部分滑坡体变形自动化监测及预警系统研究项目. （）
