结合多源数据的城市级LOD1建筑物建模  

City-level LOD1 building modeling with multi-source data

作　　者：郭欣怡 吕扬 侯庆明[1,2] 陈品祥 GUO Xinyi;LYU Yang;HOU Qingming;CHEN Pingxiang(Beijing Institute of Surveying and Mapping,Beijing 100038,China;Beijing Key Laboratory of Urban Spatial Information Engineering,Beijing 100038,China)

机构地区：[1]北京市测绘设计研究院,北京100038 [2]城市空间信息工程北京市重点实验室,北京100038

出　　处：《北京测绘》2023年第6期854-860,共7页Beijing Surveying and Mapping

基　　金：科技部创新方法工作专项(2020IM020500)。

摘　　要：真实准确的三维建筑物表达是实景三维中国建设的重要组成。针对大范围、高精度细节层次(LOD)建筑物模型工程建立的需求,充分利用丰富的遥感和地理信息数据资源,形成了一种结合多源数据构建LOD1建筑物模型的方法。首先,分析整合高分辨率立体航空影像和机载激光点云生成的地形数据,其次,基于二维矢量自动提取建筑物高度,对高度阈值超限的建筑物进行航测立体采集,最后,重建LOD1建筑物模型,对模型进行精度评价。实验表明,通过该方法生成了较为精确的北京市全市550余万栋建筑物LOD1模型,高程中误差为0.87 m,平面中误差为1.45 m,为实景三维北京提供准确的基础数据。Real and accurate three-dimensional(3D)building expression is an important component of real 3D China construction.Aiming at the engineering establishment of large-scale and high-precision levels of detail 1(LOD1)building models,abundant remote sensing and geographic information data resources were applied to form a method of constructing LOD1 building model with multi-source data.Firstly,the terrain data generated by high-resolution stereo aerial images and airborne light detection and ranging(LiDAR)point cloud were analyzed and integrated,secondly,based on two-dimensional vector automatic extraction of building height,and then the building of the aerial stereoscopic acquisition were carried out for the buildings with the height over the high threshold.Finally,the LOD1 building model was reconstructed,and the accuracy evaluation of the model were carried out.The experimental results showed that the proposed method generated a relatively accurate LOD1 model of 5.5 million buildings in Beijing with a mean square error of 0.87 meters in elevation and 1.45 meters in plane,which can provide accurate basic data for the real 3D Beijing.

关 键 词：建筑物高度提取 三维建筑物重建 细节层次模型 数字表面模型 

分 类 号：P237[天文地球—摄影测量与遥感]