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http://dx.doi.org/10.17820/eri.2020.7.2.090

Introduction and Application of 3D Terrestrial Laser Scanning for Estimating Physical Structurers of Vegetation in the Channel  

Jang, Eun-kyung (Department of Land, Water and Environment Research, Korea Institute of Civil Engineering and Building Technology)
Ahn, Myeonghui (Department of Land, Water and Environment Research, Korea Institute of Civil Engineering and Building Technology)
Ji, Un (Department of Land, Water and Environment Research, Korea Institute of Civil Engineering and Building Technology)
Publication Information
Ecology and Resilient Infrastructure / v.7, no.2, 2020 , pp. 90-96 More about this Journal
Abstract
Recently, a method that applies laser scanning (LS) that acquires vegetation information such as the vegetation habitat area and the size of vegetation in a point cloud format has been proposed. When LS is used to investigate the physical shape of vegetation, it has the advantage of more accurate and rapid information acquisition. However, to examine uncertainties that may arise during measurement or post-processing, the process of adjusting the data by the actual data is necessary. Therefore, in this study, the physical structure of stems, branches, and leaves of woody vegetation in an artificially formed river channel was manually investigated. The obtained results then compared with the information acquired using the three-dimensional terrestrial laser scanning (3D TLS) method, which repeatedly scanned the target vegetation in various directions to obtain relevant information with improved precision. The analysis demonstrated a negligible difference between the measurements for the diameters of vegetation and the length of stems; however, in the case of branch length measurement, a relatively more significant difference was observed. It is because the implementation of point cloud information limits the precise differentiation between branches and leaves in the canopy area.
Keywords
3D terrestrial laser scan; Manual survey of vegetation; Physical structurers of vegetation; Point clouds;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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