摘要
针对倾斜摄影影像三维建模中常出现近地面数据缺失、细节模糊、模型变形等局限,本研究旨在解决倾斜摄影建模中近地面数据缺失的问题,利用近景摄影测量辅助无人机倾斜摄影测量技术,全面获取城市大范围多视影像数据,构建精细化三维模型。首先,通过倾斜摄影测量生成建筑物的初始三维模型。其次,通过近景摄影测量获取大量近景影像,采用SIFT(Scale-Invariant Feature Transform)特征匹配算法、点云配准以及纹理映射等影像处理技术,对初始三维模型进行修复。对比试验表明,近景摄影辅助倾斜摄影建模技术丰富了实景三维模型的近地面纹理,提高了模型分辨率,从而实现精细化三维模型重构,解决了倾斜摄影模型近地面纹理拉伸和粘连等问题,可满足城市精细化建模要求。
There are common limitations in 3D modeling using oblique photography,such as missing near-ground data,blurred details,and model deformation.In this paper,the problem of missing near-ground data is solved by utilizing closerange photogrammetry to assist drone oblique photogrammetry technology,allowing for comprehensive acquisition of widespread multi-view imagery data in urban areas and the construction of detailed 3D models.First,an initial 3D model of buildings is generated through oblique photogrammetry.Then,a large amount of close-range imagery is acquired through close-range photogrammetry.And image processing techniques such as SIFT feature matching,point cloud registration,and texture mapping are used to repair the initial 3D model.Comparative experiments show that the oblique photogrammetry modeling technology assisted by close-range photogrammetry can enrich the near-ground texture of the real 3D model and improve model resolution,thus achieving a refined narrative model reconstruction,and solving the problem of near-ground blurring and sticking in oblique photogrammetry models,which meets the requirements of detailed urban modeling.
作者
曾艳
石碧娟
刘松焕
李军
ZENG Yan;SHI Bijuan;LIU Songhuan;LI Jun(The First Surveying and Mapping Institute of Hunan Province,Changsha 410114,China;Natural Resources Bureau of Changsha County,Changsha 410111,China;School of Earth Sciences and Spatial Information Engineering,Hunan University of Science and Technology,Xiangtan 411201,China;Hunan Engineering Research Center of 3D Real Scene Construction and Application Technology,Changsha 410114,China)
出处
《江西测绘》
2025年第3期9-11,30,共4页
JIANGXI CEHUI
基金
实景三维建设与应用技术湖南省工程研究中心开放课题(项目编号:3DRS2024H3)
关键词
倾斜摄影
三维模型
近景影像
Oblique Photography
3D Model
Close-range Image
