2020
DOI: 10.1016/j.scitotenv.2019.134074
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Species discrimination and individual tree detection for predicting main dendrometric characteristics in mixed temperate forests by use of airborne laser scanning and ultra-high-resolution imagery

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Cited by 42 publications
(29 citation statements)
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“…The classi cation results of the dominant species was validated by independent samples, which is a recommended way to assess accuracy (Olofsson et al, 2014), and the distribution range of seven targeted forest classes was delineated with an acceptable accuracy (kappa=0.71, OA=77.5%) across the study area, which was comparable to the existing related studies, where the object-based methods was used together with UAV or multi-temporal multi-spectral images, and an overall classi cation accuracy was achieved from 73%-82% (Apostol et al, 2020;Franklin and Ahmed, 2018;Liu et al, 2018;Michez et al, 2016). Furthermore, some of previous studies obtained better accuracy, but the number of targeted category was relatively fewer, and they were very demanding in terms of spatial resolution of the image, which is not applicable for studies on large areas (Fabian et al, 2016;Grabska et al, 2019).…”
Section: Discussionsupporting
confidence: 65%
“…The classi cation results of the dominant species was validated by independent samples, which is a recommended way to assess accuracy (Olofsson et al, 2014), and the distribution range of seven targeted forest classes was delineated with an acceptable accuracy (kappa=0.71, OA=77.5%) across the study area, which was comparable to the existing related studies, where the object-based methods was used together with UAV or multi-temporal multi-spectral images, and an overall classi cation accuracy was achieved from 73%-82% (Apostol et al, 2020;Franklin and Ahmed, 2018;Liu et al, 2018;Michez et al, 2016). Furthermore, some of previous studies obtained better accuracy, but the number of targeted category was relatively fewer, and they were very demanding in terms of spatial resolution of the image, which is not applicable for studies on large areas (Fabian et al, 2016;Grabska et al, 2019).…”
Section: Discussionsupporting
confidence: 65%
“…Traditional forestry methods require in-depth outdoor ground-level measurements, which are time-consuming, labor-intensive, and inefficient. It is difficult to obtain continuous individual tree parameters over large areas [4], [5]. The proposal of precision The associate editor coordinating the review of this manuscript and approving it for publication was Geng-Ming Jiang .…”
Section: Introductionmentioning
confidence: 99%
“…Among the papers that adopted both manual and unsupervised tree segmentation, only a few research works included ground data collection [42,72,[75][76][77] with a tree sample size ranging from 109 to 2069 trees. None of those presented wood biomass in-field data.…”
Section: Introductionmentioning
confidence: 99%
“…For natural, mixed and uneven-aged forest, Mayr et al [75] gathered tree height in dry savannah and used an implementation of the watershed segmentation algorithm provided by System for Automated Geoscientific Analyses-Geographic Information System (SAGA-GIS) while Franklin and Ahmed [42] utilized the multi-resolution segmentation procedure with the ENVI software system and they collected tree height and crown dimensions in a mixed maple, aspen, and birch forest. Concerning planted, pure and even-aged forests, Ganz et al [72] used a multiresolution segmentation algorithm and measured tree height within stands of Norway spruce and common beech while Apostol et al [77] utilized the watershed algorithm and collected tree height and stem diameter in an even-aged Douglas fir stand. By taking tree height as ground-truth data in a chestnut plantation, Marques et al [76] segmented trees by combining a vegetation-index based algorithm with the Otsu method.…”
Section: Introductionmentioning
confidence: 99%