Acta Geodaetica et Cartographica Sinica ›› 2017, Vol. 46 ›› Issue (9): 1123-1134.doi: 10.11947/j.AGCS.2017.20160518

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Accurate and Automatic Building Roof Extraction Using Neighborhood Information of Point Clouds

ZHAO Chuan1,2, ZHANG Baoming1, CHEN Xiaowei1,2, GUO Haitao1, LU Jun1   

  1. 1. Institute of Surveying and Mapping, Information Engineering University, Zhengzhou 450001, China;
    2. State Key Laboratory of Geo-information Engineering, Xi'an 710054, China
  • Received:2016-10-25 Revised:2017-08-09 Online:2017-09-20 Published:2017-10-12
  • Supported by:
    The National Natural Science Foundation of China (No. 41601507);The Open Research Foundation of State Key Laboratory of Geo-information Engineering (No. SKLGIE2015-M-3-3)

Abstract: High accuracy building roof extraction from LiDAR data is the key to build topological relationship of building roofs and reconstruct buildings. Aiming at the poor adaptation and low extraction precision of existing roof extraction methods for complex building, an accurate and automatic building roof extraction method using neighborhood information of point clouds is proposed. Point clouds features are calculated by principle component analysis, and reliable seed points are selected after feature histogram construction. Initial roof surfaces are extracted quickly and precisely by the proposed local normal vector distribution density-based spatial clustering of applications with noise (LNVD-DBSCAN). Roof competition problem is solved effectively by the poll model based on neighborhood information. Experimental results show that the proposed method can extract building roofs automatically and precisely, and has preferable adaptation to buildings with different complexity, which is able to provide reliable roof information for building reconstruction.

Key words: building roofs, LiDAR data, neighborhood information, density-based clustering, point cloud, 3D building reconstruction

CLC Number: