Remote sensing of large wood in high‐resolution satellite imagery: Design of an automated classification work‐flow for multiple wood deposit types
Remote sensing of large wood in high‐resolution satellite imagery: Design of an automated classification work‐flow for multiple wood deposit types
复制标题
高分辨率卫星图像中大型木材的遥感:针对多种木材矿床类型的自动分类工作流程的设计
DOI:
10.1002/esp.5179
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发表时间:
2021
影响因子:
3.3
通讯作者:
Wohl, Ellen
中科院分区:
文献类型:
--
作者:
Sendrowski, Alicia;Wohl, Ellen
Wood researchers increasingly rely on remote‐sensing products to augment field information about wood deposits in river corridors. The availability of very high‐resolution (<1 m) satellite imagery makes capturing wood over greater spatial extents possible, but previous studies have found difficulty in automatically extracting wood deposits due to the challenge in distinguishing wood from spectrally similar corridor features such as sand. We also lack knowledge on the spectral properties of different wood deposit types in multiple depositional environments. In this work, we explore image classification work‐flows for four wood deposit types in three North American environments: in‐channel jams deposited in the Tatshenshini River in Alaska, USA; a wood raft on the Slave River in Northwest Territories, Canada; and wood deposited along a lakeshore and coastal embayment in the Mackenzie River Delta in Northwest Territories, Canada. We compare classification results of object‐based and pixel‐based image analysis with supervised [support vector machine (SVM)] and unsupervised (ISO clustering) classifiers. We evaluate several accuracy assessment parameters and achieve overall classification accuracies of 65–99%, showing automated image classification is a possible approach for analysing wood across larger areas. We also find that wood sensitivity in the classification ranged from 0 to 95%, indicating that some techniques are better suited to wood capture than others. We find that supervised classification produced more accurate wood maps, though there is large variation in classification outcomes across environments related to spatial arrangement of wood in the landscape. We discuss the influence of depositional environment on classification and provide recommendations for designing a wood classification work‐flow.
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DOI:
10.1111/geoa.12091
发表时间:
2015
期刊:
Geografiska Annaler: Series A, Physical Geography
影响因子:
--
作者:
H. Ulloa;A. Iroumé;L. Mao;A. Andreoli;Silvia Diez;L. Lara
通讯作者:
L. Lara
影响因子:
3.9
作者:
W. Bertoldi;A. Gurnell;M. Welber
通讯作者:
M. Welber
影响因子:
10.1
作者:
E. Wohl;N. Kramer;V. Ruiz‐Villanueva;Daniel N. Scott;F. Comiti;A. Gurnell;H. Piégay;K. Lininger;K. Jaeger;D. Walters;K. Fausch
通讯作者:
K. Fausch
DOI:
--
发表时间:
1962
期刊:
影响因子:
--
作者:
F. Müller
通讯作者:
F. Müller
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
Véronique Benacchio;H. Piégay;T. Buffin‐Bélanger;Lise Vaudor
通讯作者:
Lise Vaudor