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REMOTE SENSING FOR LAND & RESOURCES    2014, Vol. 26 Issue (2) : 54-59     DOI: 10.6046/gtzyyg.2014.02.10
Technology and Methodology |
The extraction of building boundaries based on LiDAR point cloud data and imageries
LI Yunfan, GONG Weiping, LIN Yuxian, WANG Bo
The Administration Center of Urban-Rural Planning Ministry of Housing & Urban-Rural Development of P R C, Beijing 100835, China
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Abstract  

A method for extracting building boundaries using airborne LiDAR point cloud data and imageries is proposed in this paper. Firstly, an α-shape algorithm is used to extract the rough outline of buildings from point clouds. Then building edge line segments are extracted from the registered images by an straight line segments extraction algorithm based on line region support. By using voting mechanism and point-to-line distance, the true boundaries of the buildings are obtained. Finally, a new method for refinement of a building outline is put forward, in which the extracted edge information is utilized to correct the rough outline extracted by the point cloud image, and the revised outline is processed by Douglas - Peucker algorithm to remove redundant nodes. the force intersect method is employed to restore the corner of the building, and finally the accurate outside contour polygons of the building is obtained. The effectiveness of the proposed method has been verified by experiments.

Keywords FY-3      visible and infrared radiometer(VIRR)      micro ware humidity sounder(MWHS)      IDL      3D visualization     
:  P237  
Issue Date: 28 March 2014
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GAO Dawei
FAN Gaofeng
HU Yongliang
ZHANG Xiaowei
HE Yue
YU Zhenyan
Cite this article:   
GAO Dawei,FAN Gaofeng,HU Yongliang, et al. The extraction of building boundaries based on LiDAR point cloud data and imageries[J]. REMOTE SENSING FOR LAND & RESOURCES, 2014, 26(2): 54-59.
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https://www.gtzyyg.com/EN/10.6046/gtzyyg.2014.02.10     OR     https://www.gtzyyg.com/EN/Y2014/V26/I2/54

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