Remote Sens. 2010, 2(3), 833-860; doi:10.3390/rs2030833
Review

Ground Filtering Algorithms for Airborne LiDAR Data: A Review of Critical Issues

Received: 4 January 2010; in revised form: 20 February 2010 / Accepted: 27 February 2010 / Published: 22 March 2010
(This article belongs to the Special Issue LiDAR)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: This paper reviews LiDAR ground filtering algorithms used in the process of creating Digital Elevation Models. We discuss critical issues for the development and application of LiDAR ground filtering algorithms, including filtering procedures for different feature types, and criteria for study site selection, accuracy assessment, and algorithm classification. This review highlights three feature types for which current ground filtering algorithms are suboptimal, and which can be improved upon in future studies: surfaces with rough terrain or discontinuous slope, dense forest areas that laser beams cannot penetrate, and regions with low vegetation that is often ignored by ground filters.
Keywords: LiDAR; ground filtering; terrain; DEM; forest; urban; review
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MDPI and ACS Style

Meng, X.; Currit, N.; Zhao, K. Ground Filtering Algorithms for Airborne LiDAR Data: A Review of Critical Issues. Remote Sens. 2010, 2, 833-860.

AMA Style

Meng X, Currit N, Zhao K. Ground Filtering Algorithms for Airborne LiDAR Data: A Review of Critical Issues. Remote Sensing. 2010; 2(3):833-860.

Chicago/Turabian Style

Meng, Xuelian; Currit, Nate; Zhao, Kaiguang. 2010. "Ground Filtering Algorithms for Airborne LiDAR Data: A Review of Critical Issues." Remote Sens. 2, no. 3: 833-860.

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