Development of "air-ground data fusion" based LiDAR method: Towards sustainable preservation and utilization of multiple-scaled historical blocks and buildings. (April 2023)

• Record Type: Journal Article
• Authors: Wang, Wei; Hei, Mengmeng; Peng, Fan; Li, Jing; Chen, Shaobin; Huang, Yuanyuan; Feng, Zhuangbo
• Is Part Of: Sustainable cities and society. Volume 91(2023)
• Publication Date: 2023-04
• Subjects: Architectural heritage preservation -- Oblique photography -- Ground 3D laser scanning -- 3D reconstruction -- LiDAR; Sustainable urban development -- Periodicals; Sustainable buildings -- Periodicals; Urban ecology (Sociology) -- Periodicals; 307.76
• DOI: 10.1016/j.scs.2023.104414
• Languages: English
• ISSNs: 2210-6707

Abstract

Highlights: An advanced 3D AGF-LiDAR reconstruction technology has been proposed. Some limitations of existing 3D reconstruction technologies have been solved. The AGF-LiDAR has been successfully applied in historical buildings and blocks. The AGF-LiDAR is better than conventional methods based on quantitative scoring system. Abstract: As important components of urban sustainable development, historical buildings and blocks have critical cultural, economical, and scientific values. Sustainable preservation and utilization of historical buildings/blocks need reliable spatial geometry information, which is commonly generated by three-dimensional (3D) reconstruction. Traditional 3D reconstruction technologies, such as image-based air oblique photography reconstruction technology (OP) and laser-based ground scanning technology (LT), have disadvantages in information integrity and reconstruction accuracy. To overcome these limitations, the current study developed an advanced AGF-LiDAR ("air-ground data fusion" based 3D laser radar method) reconstruction technology. Series of algorithms and hardwares were constructed to realize real-time cooperation between "air-ground" equipment, and real-time fusion of "air-ground" data. The AGF-LiDAR reconstruction technology was verified by practical surveying and mapping of historical buildings, and the real scene scoring system was used in quantitative evaluation. Results show that AGF-LiDAR reconstruction technology can obviously improve reconstruction quality in terms of information integrity and accuracy. The score of AGF-LiDAR reconstruction technology (90 points) was higher than that of traditional manual "air-ground" fusion method (61 points). The AGF-LiDAR reconstruction technology can be applied in various fields, including green urban design, intelligent operation. Overall, the newly developed AGF-LiDAR reconstruction technology is very promising in sustainable heritage preservation.