24 February 2017 Airborne laser scanning point clouds filtering method based on the construction of virtual ground seed points
Author Affiliations +
Abstract
Filtering of airborne laser scanning (ALS) point clouds into ground and nonground points is a core postprocessing step for ALS data. A hierarchical filtering method, which has high operating efficiency and accuracy because of the combination of multiscale morphology and progressive triangulated irregular network (TIN) densification (PTD), is proposed. In the proposed method, the grid is first constructed for the ALS point clouds, and virtual seed points are set by analyzing the shape and elevation distribution of points within the grid. Then, the virtual seed points are classified as ground or nonground using the multiscale morphological method. Finally, the virtual ground seed points are utilized to generate the initial TIN, and the filter is completed by iteratively densifying the initial TIN. We used various ALS data to test the performance of the proposed method. The experimental results show that the proposed filtering method has strong applicability for a variety of landscapes and, in particular, has lower commission error than the classical PTD filtering method in urban areas.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Xiaoqiang Liu, Xiaoqiang Liu, Yanming Chen, Yanming Chen, Liang Cheng, Liang Cheng, Mengru Yao, Mengru Yao, Shulin Deng, Shulin Deng, Manchun Li, Manchun Li, Dong Cai, Dong Cai, } "Airborne laser scanning point clouds filtering method based on the construction of virtual ground seed points," Journal of Applied Remote Sensing 11(1), 016032 (24 February 2017). https://doi.org/10.1117/1.JRS.11.016032 . Submission: Received: 2 November 2016; Accepted: 7 February 2017
Received: 2 November 2016; Accepted: 7 February 2017; Published: 24 February 2017
JOURNAL ARTICLE
15 PAGES


SHARE
RELATED CONTENT


Back to Top