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Development of a UAV-LiDAR System with application to forest inventory
Citation
Wallace, L and Lucieer, A and Watson, C and Turner, D, Development of a UAV-LiDAR System with application to forest inventory, Remote Sensing, 4, (6) pp. 1519-1543. ISSN 2072-4292 (2012) [Refereed Article]
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Copyright Statement
Licensed under the Creative Commons Attribution 3.0 Unported (CC BY 3.0) http://creativecommons.org/licenses/by/3.0/
Abstract
We present the development of a low-cost Unmanned Aerial Vehicle-Light
Detecting and Ranging (UAV-LiDAR) system and an accompanying workflow to produce
3D point clouds. UAV systems provide an unrivalled combination of high temporal and spatial resolution datasets. The TerraLuma UAV-LiDAR system has been developed to take advantage of these properties and in doing so overcome some of the current limitations of the use of this technology within the forestry industry. A modified processing workflow including a novel trajectory determination algorithm fusing observations from a GPS receiver, an Inertial Measurement Unit (IMU) and a High Definition (HD) video camera is presented. The advantages of this workflow are demonstrated using a rigorous assessment
of the spatial accuracy of the final point clouds. It is shown that due to the inclusion of video the horizontal accuracy of the final point cloud improves from 0.61 m to 0.34 m (RMS error assessed against ground control). The effect of the very high density point clouds (up to 62 points per m2) produced by the UAV-LiDAR system on the measurement of tree location, height and crown width are also assessed by performing repeat surveys over individual isolated trees. The standard deviation of tree height is shown to reduce from 0.26 m, when
using data with a density of 8 points perm2, to 0.15mwhen the higher density data was used. Improvements in the uncertainty of the measurement of tree location, 0.80 m to 0.53 m, and crown width, 0.69 m to 0.61 m are also shown.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Research Division: | Earth Sciences |
| Research Group: | Physical geography and environmental geoscience |
| Research Field: | Physical geography and environmental geoscience not elsewhere classified |
| Objective Division: | Environmental Management |
| Objective Group: | Fresh, ground and surface water systems and management |
| Objective Field: | Assessment and management of freshwater ecosystems |
| UTAS Author: | Wallace, L (Dr Luke Wallace) |
| UTAS Author: | Lucieer, A (Professor Arko Lucieer) |
| UTAS Author: | Watson, C (Dr Christopher Watson) |
| UTAS Author: | Turner, D (Dr Darren Turner) |
| ID Code: | 79085 |
| Year Published: | 2012 |
| Web of Science® Times Cited: | 381 |
| Deposited By: | Geography and Environmental Studies |
| Deposited On: | 2012-08-16 |
| Last Modified: | 2017-10-24 |
| Downloads: | 618 View Download Statistics |
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