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Automation of Building Extraction and Modeling Using Airborne LiDAR Data  

Lim, Sae-Bom (세종대학교 지구정보공학과 도시공간정보사업단)
Kim, Jung-Hyun (세종대학교 지구정보공학과)
Lee, Dong-Cheon (세종대학교 지구정보공학과)
Publication Information
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography / v.27, no.5, 2009 , pp. 619-628 More about this Journal
Abstract
LiDAR has capability of rapid data acquisition and provides useful information for reconstructing surface of the Earth. However, Extracting information from LiDAR data is not easy task because LiDAR data consist of irregularly distributed point clouds of 3D coordinates and lack of semantic and visual information. This thesis proposed methods for automatic extraction of buildings and 3D detail modeling using airborne LiDAR data. As for preprocessing, noise and unnecessary data were removed by iterative surface fitting and then classification of ground and non-ground data was performed by analyzing histogram. Footprints of the buildings were extracted by tracing points on the building boundaries. The refined footprints were obtained by regularization based on the building hypothesis. The accuracy of building footprints were evaluated by comparing with 1:1,000 digital vector maps. The horizontal RMSE was 0.56m for test areas. Finally, a method of 3D modeling of roof superstructure was developed. Statistical and geometric information of the LiDAR data on building roof were analyzed to segment data and to determine roof shape. The superstructures on the roof were modeled by 3D analytical functions that were derived by least square method. The accuracy of the 3D modeling was estimated using simulation data. The RMSEs were 0.91m, 1.43m, 1.85m and 1.97m for flat, sloped, arch and dome shapes, respectively. The methods developed in study show that the automation of 3D building modeling process was effectively performed.
Keywords
Airborne LiDAR data; Building extraction; Surface patch segmentation; 3D modeling;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
Times Cited By SCOPUS : 0
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