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Forests 2016, 7(8), 165; doi:10.3390/f7080165

Forest Stand Inventory Based on Combined Aerial and Terrestrial Close-Range Photogrammetry

1
Faculty of Forestry and Wood Technology, Mendel University in Brno, Zemědělská 1, Brno 613 00, Czech Republic
2
Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Kamýcká 129, Praha 165 21, Czech Republic
*
Author to whom correspondence should be addressed.
Academic Editors: Juha Hyyppä, Xinlian Liang and Eetu Puttonen
Received: 29 June 2016 / Revised: 27 July 2016 / Accepted: 27 July 2016 / Published: 30 July 2016
(This article belongs to the Special Issue Forest Ground Observations through Terrestrial Point Clouds)
View Full-Text   |   Download PDF [9653 KB, uploaded 30 July 2016]   |  

Abstract

In this article we introduce a new method for forest management inventories especially suitable for highly-valued timber where the precise estimation of stem parameters (diameter, form, and tapper) plays the key role for market purposes. The unmanned aerial system (UAS)-based photogrammetry is combined with terrestrial photogrammetry executed by walking inside the stand and the individual tree parameters are estimated. We compare two automatic methods for processing of the point clouds and the delineation of stem circumference at breast height. The error of the diameter estimation was observed to be under 1 cm root mean square error (RMSE) and the height estimation error was 1 m. Apart from the mentioned accuracy, the main advantage of the proposed work is shorter time demand for field measurement; we could complete both inventories of 1 hectare forest stand in less than 2 h of field work. View Full-Text
Keywords: UAS; forest inventory; photogrammetry; point cloud UAS; forest inventory; photogrammetry; point cloud
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Mikita, T.; Janata, P.; Surový, P. Forest Stand Inventory Based on Combined Aerial and Terrestrial Close-Range Photogrammetry. Forests 2016, 7, 165.

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