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Article

Accuracy Comparison of Aerial Lidar, Mobile-Terrestrial Lidar, and UAV Photogrammetric Capture Data Elevations over Different Terrain Types

1
Department of Civil Engineering, Boise State University, Boise, ID 83725, USA
2
Idaho Transportation Department, District 5, Pocatello, ID 83204, USA
3
David Evans and Associates, Inc., Spokane, WA 99201, USA
*
Author to whom correspondence should be addressed.
Received: 6 July 2020 / Revised: 24 July 2020 / Accepted: 28 July 2020 / Published: 31 July 2020
Lidar and other remotely sensed data such as UAV photogrammetric data capture are being collected and utilized for roadway design on an increasing basis. These methods are desirable over conventional survey due to their efficiency and cost-effectiveness over large areas. A high degree of relative accuracy is achievable through the establishment of survey control. In this case study, elevations (z-values) derived from mobile-terrestrial lidar, aerial lidar, and UAV photogrammetric capture collected with survey control were statistically compared to conventionally surveyed elevations. A cost comparison of the methods is also included. Each set of z-values corresponds to a discrete horizontal point originally part of the conventional survey, collected as cross-sections. These cross-sections were surveyed at three approximate tenth-mile sample locations along US-30 near Georgetown, Idaho. The cross-sections were collected as elevational accuracy verification, and each sample location was selected as an area where the mobile-terrestrial lidar in particular was expected to have more difficulty achieving accuracy off the road surface. Processing and analysis were performed in Esri ArcMap 10.6, and all data were obtained from the Idaho Transportation Department, District 5. Overall, the aerial lidar elevations were found to be closest to conventionally surveyed elevations; on road surface and level terrain, mobile-terrestrial and UAV photogrammetric capture elevations were closer to the conventionally measured elevations. View Full-Text
Keywords: lidar; unmanned aerial vehicles; road design; UAV photogrammetric data capture; terrain models lidar; unmanned aerial vehicles; road design; UAV photogrammetric data capture; terrain models
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MDPI and ACS Style

Khanal, M.; Hasan, M.; Sterbentz, N.; Johnson, R.; Weatherly, J. Accuracy Comparison of Aerial Lidar, Mobile-Terrestrial Lidar, and UAV Photogrammetric Capture Data Elevations over Different Terrain Types. Infrastructures 2020, 5, 65. https://0-doi-org.brum.beds.ac.uk/10.3390/infrastructures5080065

AMA Style

Khanal M, Hasan M, Sterbentz N, Johnson R, Weatherly J. Accuracy Comparison of Aerial Lidar, Mobile-Terrestrial Lidar, and UAV Photogrammetric Capture Data Elevations over Different Terrain Types. Infrastructures. 2020; 5(8):65. https://0-doi-org.brum.beds.ac.uk/10.3390/infrastructures5080065

Chicago/Turabian Style

Khanal, Mandar, Mahamudul Hasan, Nikolaus Sterbentz, Ryen Johnson, and Jesse Weatherly. 2020. "Accuracy Comparison of Aerial Lidar, Mobile-Terrestrial Lidar, and UAV Photogrammetric Capture Data Elevations over Different Terrain Types" Infrastructures 5, no. 8: 65. https://0-doi-org.brum.beds.ac.uk/10.3390/infrastructures5080065

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