多源数据融合在实景三维模型质量提升中的应用  

Application of multi-source data fusion in the quality improvement of 3D real scene model

作　　者：刘璇 胡兵 任苗 付宁波 LIU Xuan;HU Bing;REN Miao;FU Ningbo(Jiangxi Natural Resource Surveying and Monitoring Institute,Nanchang,Jiangxi 330002,China)

机构地区：[1]江西省自然资源测绘与监测院,江西南昌330002

出　　处：《北京测绘》2024年第4期489-495,共7页Beijing Surveying and Mapping

基　　金：江西省自然资源科技创新项目(ZRKJ20232303)。

摘　　要：常规倾斜摄影测量航高与拍摄角度固定,建立的三维(3D)模型底部或视角盲区会出现空洞、扭曲、变形等现象,而部分超高建筑物由于其顶部与地面的影像分辨率相差较大,导致建模时模型顶部会有大规模破损。本文在传统倾斜摄影基础上融合地面补拍数据与高空交叉环绕补拍数据,生成融合后倾斜摄影点云,再与手持式移动3D激光扫描仪获取的点云数据融合建模,生成高精细度实景3D模型成果。该方法在抚州市城区进行试验,从模型数学精度、表达精细度和场景效果几个方面对成果进行质量评价,结果表明:多源数据融合后的模型几何精度更高,模型表达精细度和场景效果质量都有较大程度的提升。Due to the fixed height and shooting angle of conventional oblique photogrammetry,cavitation,distortion and deformation will occur at the bottom of the established three-dimensional(3D)model or the blind area of the viewing angle.However,the top of the model will be damaged on a large scale during modeling due to the large difference in image resolution between the top and the ground of some ultra-high buildings.Based on traditional oblique photography,this paper integrated ground supplementary photography data and high-altitude cross-surround supplementary photography data to generate the oblique photographic point cloud after fusion.Fusing the point cloud data obtained by the handheld mobile 3D laser scanner to create a high-precision 3D real scene model.The method was tested in the urban area of Fuzhou City,and the results were evaluated from such aspects as the mathematical accuracy of the model,the precision of expression,and scene effect.The results show that the geometric accuracy of the model after the fusion of multi-source data is higher,and the precision of model expression and the quality of scene effect are significantly improved.

关 键 词：实景三维 地面补拍 交叉环绕补拍 激光点云 数据融合 

分 类 号：P258[天文地球—测绘科学与技术]