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

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...

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Bibliographic Details
Published in:Remote sensing (Basel, Switzerland) Switzerland), 2010-03, Vol.2 (3), p.833-860
Main Authors: Meng, Xuelian, Currit, Nate, Zhao, Kaiguang
Format: Article
Language:English
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Summary: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.
ISSN:2072-4292
2072-4292
DOI:10.3390/rs2030833