Dynamic Triangle-based Method for 3D Building Rooftop Reconstruction from LiDAR Data

摘要：

A framework to reconstruct 3D building rooftops from LiDAR data is proposed, in which the key contribution is a dynamic triangle - based method for precise rooftop detection. This framework consists of four steps: building point segmentation, coarse building rooftop detection, precise building rooftop determination, and 3D building rooftop reconstruction. The segmented LiDAR points belonging to each building are firstly derived. A triangle cluster - based normal analysis is then introduced to detect coarse building rooftops. A new dynamic triangle - based method is presented to determine precise rooftops by refining the coarse rooftops. Its main idea is a dynamic propagation strategy for new reliable triangle construction from an initial triangle network by reliability analysis of candidate points. 3D rooftop reconstruction can be carried out using the method proposed by this author 12. The experimental results illustrate that the proposed framework can derive the reliable and accurate 3D building rooftops.

作者: Liang CHENG Lihua TONG Wei ZHAO Yongxue LIU Manchun LI

作者单位: Department of Geographical Information Science, NanjingUniversity, Nanjing, Jiangsu, 210093, China

会议类型: 国际会议

会议名称: The 19th International Conference on Geoinformatics(第19届国际地理信息科学与技术大会 19 Geoinformatics)

会议地点: 上海

会议语种:英文

页码: 1-4

在线出版日期: 2011-06-01（万方平台首次上网日期，不代表论文的发表时间）