Measuring Glacier Surface Velocities With LiDAR: A Comparison of Three-Dimensional Change Detection Methods
Using airborne and terrestrial LiDAR data from glaciers in Greenland and Antarctica, we compare three change detection methods for accuracy and performance. We focus in particular on one method, Coherent Point Drift (CPD). We find that CPD outperforms Iterative Closest Point (ICP) and Particle Imagi...
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ftunivhouston:oai:uh-ir.tdl.org:10657/5416 2023-05-15T13:46:38+02:00 Measuring Glacier Surface Velocities With LiDAR: A Comparison of Three-Dimensional Change Detection Methods Gadomski, Peter J. Glennie, Craig L. Hartzell, Preston J. Finnegan, David C. December 2016 application/pdf born digital https://hdl.handle.net/10657/5416 en eng https://hdl.handle.net/10657/5416 The author of this work is the copyright owner. UH Libraries and the Texas Digital Library have their permission to store and provide access to this work. Further transmission, reproduction, or presentation of this work is prohibited except with permission of the author(s). LiDAR Glaciers Change-detection Coherent Point Drift Iterative Closest Point Particle image velocimetry Helehim Glacier Canada Glacier Glacier velocity Thesis Text 2016 ftunivhouston 2022-04-03T15:47:36Z Using airborne and terrestrial LiDAR data from glaciers in Greenland and Antarctica, we compare three change detection methods for accuracy and performance. We focus in particular on one method, Coherent Point Drift (CPD). We find that CPD outperforms Iterative Closest Point (ICP) and Particle Imaging Velocimetry (PIV) when used on a terrestrial LiDAR dataset at the Helheim Glacier in southeast Greenland. At one representative location, CPD calculated an average glacier velocity of 20.11 m d−1 with Root-Mean Squared Error of 2.5 m d−1 when compared to a GNSS-derived measurement of 20.44md−1. All three change detection methods fail to fully capture the motion of the Canada Glacier in Antarctica, but do detect change in the fast-moving and crevassed portion of the glacier. We conclude that these change detection methods, and CPD in particular, are useful tools for measuring glacier velocity when the data have sufficient identifiable features in both epochs. Civil and Environmental Engineering, Department of Thesis Antarc* Antarctica Canada Glacier glacier glacier* Greenland University of Houston Institutional Repository (UHIR) Canada Canada Glacier ENVELOPE(162.983,162.983,-77.617,-77.617) Greenland |
institution |
Open Polar |
collection |
University of Houston Institutional Repository (UHIR) |
op_collection_id |
ftunivhouston |
language |
English |
topic |
LiDAR Glaciers Change-detection Coherent Point Drift Iterative Closest Point Particle image velocimetry Helehim Glacier Canada Glacier Glacier velocity |
spellingShingle |
LiDAR Glaciers Change-detection Coherent Point Drift Iterative Closest Point Particle image velocimetry Helehim Glacier Canada Glacier Glacier velocity Gadomski, Peter J. Measuring Glacier Surface Velocities With LiDAR: A Comparison of Three-Dimensional Change Detection Methods |
topic_facet |
LiDAR Glaciers Change-detection Coherent Point Drift Iterative Closest Point Particle image velocimetry Helehim Glacier Canada Glacier Glacier velocity |
description |
Using airborne and terrestrial LiDAR data from glaciers in Greenland and Antarctica, we compare three change detection methods for accuracy and performance. We focus in particular on one method, Coherent Point Drift (CPD). We find that CPD outperforms Iterative Closest Point (ICP) and Particle Imaging Velocimetry (PIV) when used on a terrestrial LiDAR dataset at the Helheim Glacier in southeast Greenland. At one representative location, CPD calculated an average glacier velocity of 20.11 m d−1 with Root-Mean Squared Error of 2.5 m d−1 when compared to a GNSS-derived measurement of 20.44md−1. All three change detection methods fail to fully capture the motion of the Canada Glacier in Antarctica, but do detect change in the fast-moving and crevassed portion of the glacier. We conclude that these change detection methods, and CPD in particular, are useful tools for measuring glacier velocity when the data have sufficient identifiable features in both epochs. Civil and Environmental Engineering, Department of |
author2 |
Glennie, Craig L. Hartzell, Preston J. Finnegan, David C. |
format |
Thesis |
author |
Gadomski, Peter J. |
author_facet |
Gadomski, Peter J. |
author_sort |
Gadomski, Peter J. |
title |
Measuring Glacier Surface Velocities With LiDAR: A Comparison of Three-Dimensional Change Detection Methods |
title_short |
Measuring Glacier Surface Velocities With LiDAR: A Comparison of Three-Dimensional Change Detection Methods |
title_full |
Measuring Glacier Surface Velocities With LiDAR: A Comparison of Three-Dimensional Change Detection Methods |
title_fullStr |
Measuring Glacier Surface Velocities With LiDAR: A Comparison of Three-Dimensional Change Detection Methods |
title_full_unstemmed |
Measuring Glacier Surface Velocities With LiDAR: A Comparison of Three-Dimensional Change Detection Methods |
title_sort |
measuring glacier surface velocities with lidar: a comparison of three-dimensional change detection methods |
publishDate |
2016 |
url |
https://hdl.handle.net/10657/5416 |
long_lat |
ENVELOPE(162.983,162.983,-77.617,-77.617) |
geographic |
Canada Canada Glacier Greenland |
geographic_facet |
Canada Canada Glacier Greenland |
genre |
Antarc* Antarctica Canada Glacier glacier glacier* Greenland |
genre_facet |
Antarc* Antarctica Canada Glacier glacier glacier* Greenland |
op_relation |
https://hdl.handle.net/10657/5416 |
op_rights |
The author of this work is the copyright owner. UH Libraries and the Texas Digital Library have their permission to store and provide access to this work. Further transmission, reproduction, or presentation of this work is prohibited except with permission of the author(s). |
_version_ |
1766244772699176960 |