Comparison of wood stack volume determination between manual, photo-optical, iPad-LiDAR and handheld-LiDAR based measurement methods

doi:10.3832/ifor4153-016

Comparison of wood stack volume determination between manual, photo-optical, iPad-LiDAR and handheld-LiDAR based measurement methods

Thomas Purfürst⁽¹⁾ , Felipe De Miguel-Díez^(1-2), Ferreol Berendt⁽²⁾, Benjamin Engler⁽¹⁾, Tobias Cremer⁽²⁾

iForest - Biogeosciences and Forestry, Volume 16, Issue 4, Pages 243-252 (2023)
doi: https://doi.org/10.3832/ifor4153-016
Published: Aug 23, 2023 - Copyright © 2023 SISEF

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Geo-mapping

The measurement of roadside wood stacks in the forest still plays an important role in many forestry operations. Traditional manual measuring methods can be laborious, inaccurate and error-prone. Therefore, the issue is whether 2.5D or 3D optical remote sensing measuring methods provide more precise or detailed results and advantages in further data processing. This study examined and partly developed nine different manual, photo-optical, iPad®-LiDAR and handheld laser scanner-LiDAR-based wood stack measurement methods. Forty-seven wood stacks, ranging from 8.9 to 209.3 m³ (totalling approximately 2700 m³), were measured and compared using these nine methods. All the methods give volume estimations, and none can be seen to give the real or true wood stack gross volume. Surprisingly, the results varied significantly within and between the individual methods, with up to a 9% mean relative deviation. The relative deviation is strongly dependent on the size of the wood stack. The 3D measurement methods using iPad® RGB and LiDAR recorded lower timber volumes than the other methods, in contrast to the method based on samples taken with handheld laser scanner-LiDAR, which overestimated the volume. Generally, optical- and laser-based surveying techniques could be more widely applied in measuring wood stacks in the future. However, such automatic wood stack gross volume determination approaches still face some challenges, regarding accuracy in the case of the 2.5D methods and the lack of automatisation in the case of 3D methods. Consequently, further research is required in the near future.

Keywords

iPad LiDAR, Wood Stack Volume, 3D Volume, Photo-optical Measurement, Personal Laser Scanner, SLAM, RVR

Authors’ address

(1)

0000-0001-9661-0193
0000-0002-3800-7449
0000-0003-2104-8209
Chair of Forest Operations, University Freiburg (Germany)

(2)

0000-0002-3800-7449
0000-0002-6285-7590
0000-0001-7866-944x
Department of Forest Utilization and Timber Markets, Eberswalde University for Sustainable Development, Eberswalde (Germany)

Corresponding author

Thomas Purfürst
thomas.purfuerst@foresteng.uni-freiburg.de

Citation

Purfürst T, De Miguel-Díez F, Berendt F, Engler B, Cremer T (2023). Comparison of wood stack volume determination between manual, photo-optical, iPad-LiDAR and handheld-LiDAR based measurement methods. iForest 16: 243-252. - doi: 10.3832/ifor4153-016

Academic Editor

Enrico Marchi

Paper history

Received: Jun 08, 2022
Accepted: Jul 12, 2023

First online: Aug 23, 2023
Publication Date: Aug 31, 2023
Publication Time: 1.40 months

Open Access

This article is distributed under the terms of the Creative Commons Attribution-Non Commercial 4.0 International (https://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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