LiDAR数据与正射影像结合的三维屋顶模型重建方法  

3D Reconstruction of Building Rooftops from LiDAR Data and Orthophoto

作　　者：程亮[1] 李满春[1] 龚健雅[2] 单杰[3,4] 

机构地区：[1]江苏省地理信息技术重点实验室,南京大学,南京市汉口路22号210093 [2]武汉大学测绘遥感信息工程国家重点实验室,武汉市珞喻路129号430079 [3]武汉大学遥感信息工程学院,武汉市珞喻路129号430079 [4]美国普渡大学土木工程学院

出　　处：《武汉大学学报（信息科学版）》2013年第2期208-211,216,共5页Geomatics and Information Science of Wuhan University

基　　金：国家自然科学基金资助项目(41001238);国家973计划资助项目(2012CB719904);国家科技支撑资助项目(2012BAH28B02)

摘　　要：为提高三维屋顶模型重建的准确性与定位精度,本文集成机载LiDAR数据与正射影像,以"屋顶面片提取-屋脊线生成-三维屋顶重建"为框架,提出了三角形簇和三角形动态传播相结合的屋顶面片提取策略。基于LiDAR数据和影像的屋脊线精确提取算法,有效挖掘影像高分辨率特性和LiDAR数据高程点云特性的互补优势,实验证明了算法的优越性。A method to reconstruct 3D building rooftops by the integration of LiDAR data and orthophoto is proposed. It consists of three main steps, rooftop patch extraction, roof- top line determination and 3D rooftop model reconstruction. Two new algorithms are proposed, a method on rooftop patch detection by integrating triangle clusters and dynamic triangle propagation; an algorithm based on LiDAR data and imagery for precise rooftop line extraction. The results demonstrate that complex building rooftops can be reconstructed well by proposed method. For the reconstructed 3D rooftop models in test area 1 and 2, the correctness are 86%, 90%, respectively; the completeness are 85%, 88%, respectively; the geoposition accuracy are 0.39 m, 0.31 m, respectively

关 键 词：三维重建 屋顶模型 LIDAR 正射影像 

分 类 号：P237[天文地球—摄影测量与遥感]