Projects per year
Abstract
The 3D measurement technique of terrestrial laser scanning (TLS) in forest inventories has shown great potential for improving the accuracy and efficiency of both individual tree and plot level data collection. However, the effect of wind has been poorly estimated in the error analysis of TLS tree measurements although it causes varying deformations to the trees. In this paper, we evaluated the effect of wind on tree stem parameter estimation at different heights using TLS. The data consists of one measured Scots pine captured from three different scanning directions with two different scanning resolutions, 6.3 mm and 3.1 mm at 10 m. The measurements were conducted under two different wind speeds, approximately 3 m/s and 9 m/s, as recorded by a nearby weather station of the Finnish Meteorological Institute. Our results show that the wind may cause both the underestimation and overestimation of tree diameter when using TLS. The duration of the scanning is found to have an impact for the measured shape of the tree stem under 9 m/s wind conditions. The results also indicate that a 9 m/s wind does not have a significant effect on the stem parameters of the lower part of a tree (<28% of the tree height). However, as the results imply, the wind conditions should be taken into account more comprehensively in analysis of TLS tree measurements, especially if multiple scans from different positions are registered together. In addition, TLS could potentially be applied to indirectly measure wind speed by observing the tree stem movement.
Original language | English |
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Title of host publication | ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume III-8, 2016 |
Publisher | International Society for Photogrammetry and Remote Sensing (ISPRS) |
Pages | 117-122 |
Number of pages | 6 |
Volume | Volume III-8 |
DOIs | |
Publication status | Published - 7 Jun 2016 |
MoE publication type | A4 Conference publication |
Event | International Society for Photogrammetry and Remote Sensing Workshop on Laser Scanning - Prague, Czech Republic Duration: 12 Jul 2016 → 19 Jul 2016 Conference number: 22 |
Publication series
Name | ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
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Publisher | Copernicus GmbH |
Number | 8 |
Volume | 3 |
ISSN (Print) | 2194-9042 |
ISSN (Electronic) | 2194-9050 |
Workshop
Workshop | International Society for Photogrammetry and Remote Sensing Workshop on Laser Scanning |
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Abbreviated title | ISPRS |
Country/Territory | Czech Republic |
City | Prague |
Period | 12/07/2016 → 19/07/2016 |
Keywords
- terrestrial laser scanning
- wind
- tree reconstruction
- stem diameter
- stem location
- pine
Fingerprint
Dive into the research topics of 'The Effect of Wind on Tree Stem Parameter Estimation Using Terrestial Laser Scanning'. Together they form a unique fingerprint.Projects
- 3 Finished
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6Aika: 6Aika: Avoin kaupunkimalli avoimena innovaatioalustana
Hyyppä, H. (Principal investigator)
01/12/2015 → 28/02/2018
Project: EU: Structural funds EAKR (incl. Interreg)
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COMBAT: Competence-Based Growth Through Integrated Disruptive Technologies of 3D Digitalization, Robotics, Geospatial Information and Image Processing/Computing - Point Cloud Ecosystem
Hyyppä, H. (Principal investigator)
01/05/2015 → 31/12/2017
Project: Academy of Finland: Strategic research funding
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CoE - LaSR: Centre of Excellence in Laser Scanning Research
Hyyppä, H. (Principal investigator)
01/01/2014 → 31/12/2019
Project: Academy of Finland: Other research funding
Equipment
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i3 – Industry Innovation Infrastructure
Sainio, P. (Manager)
School of EngineeringFacility/equipment: Facility