测绘科学技术 Pub Date : 2023-01-01 DOI: 10.12677/gst.2023.111003

贝贝张

引用次数: 0

The Third Flattening Expansion of Power Se-ries Commonly Used in Geodetic Problem 大地测量问题常用幂级数的第三次展开式

测绘科学技术 Pub Date : 2023-01-01 DOI: 10.12677/gst.2023.112011

引用次数: 0

Application of New 3D Laser Scanner in Completion Survey 新型三维激光扫描仪在完井测量中的应用

测绘科学技术 Pub Date : 2023-01-01 DOI: 10.12677/gst.2023.113030

向胡

引用次数: 0

Application of Passive 3D Reconstruction in Establishing Digital Model of Bridge Cable 被动三维重建技术在桥梁缆索数字模型建立中的应用

测绘科学技术 Pub Date : 2023-01-01 DOI: 10.12677/gst.2023.114044

文超郭

{"title":"Application of Passive 3D Reconstruction in Establishing Digital Model of Bridge Cable","authors":"文超郭","doi":"10.12677/gst.2023.114044","DOIUrl":"https://doi.org/10.12677/gst.2023.114044","url":null,"abstract":"Cables are widely used in the construction of long-span bridges such as cable-stayed bridges, arch bridges and suspension bridges. The detection of the cables is a critical task, since the effective bearing area of the bridge cables will affect the stability and service life of the bridge. Establishing the digital model of the cable can facilitate the subsequent damage detection work. This led to many applications with 3D reconstruction technology in cable detection. Passive 3D reconstruction is a method to restore the geometric structure of a scene from one or more pictures, and finally obtain the 3D model of the scene. With the passive 3D reconstruction technology, the 3D digital model of the cable can be reconstructed only using the image data of bridge cables. In this work, the image data taken by the cable detection robot while moving is used for experiment, and data processing such as distortion correction is performed on the acquired image data. The information of camera position can be obtained based on the geometric structure of bridge cable. Combining this information with multiple images from different viewpoints, the three-dimensional information can be recovered for the final 3D model. For the final reconstructed model, 4 points were selected for geometric accuracy evaluation and compared with the ground truth. The relative errors of these chosen points reach 0.913%, 1.196%, 0.947% and 0.568% respectively, and the MAE is 1.0053 mm. The experimental results show that the method proposed can generate a model with clear texture and high accuracy, and also reduce the cost of data acquisition.","PeriodicalId":62247,"journal":{"name":"测绘科学技术","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135838682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on the Sharing of Shared Area in Real Estate Surveying and Mapping 房地产测绘中共享区域的共享研究

测绘科学技术 Pub Date : 2023-01-01 DOI: 10.12677/gst.2023.114041

海广孙

引用次数: 0

Construction and Application for Image Ge-ometric Correction of Generalized GCP Chip Database 广义GCP芯片数据库图像几何校正的构建与应用

测绘科学技术 Pub Date : 2023-01-01 DOI: 10.12677/gst.2023.112009

祥杰孔

引用次数: 0

Research on Improving Image Alignment Techniques for Remote Sensing Data Mapping 改进遥感数据制图图像对准技术的研究

测绘科学技术 Pub Date : 2023-01-01 DOI: 10.12677/gst.2023.113018

超陈