3D RADIATIVE TRANSFER MODELLING OF FOREST CANOPIES RECONSTRUCTED FROM TERRESTRIAL LASER SCANNING: A CASE OF TALL AUSTRALIAN EUCALYPTS

被引：1

作者：

Malenovsky, Z. ^{[1
,2
]}

Lamsal, K. ^{[2
]}

Janoutova, R. ^{[3
]}

Devereux, T. ^{[4
,5
]}

Woodgate, W. ^{[4
,6
]}

Hambrecht, L. ^{[2
]}

Cimoli, E. ^{[2
]}

Lucieer, A. ^{[2
]}

Homolova, L. ^{[3
]}

Reagieg, O. ^{[7
]}

Wang, Y. ^{[7
]}

Gastellu-Etchegorry, J. P. ^{[7
]}

机构：

[1] Univ Bonn, Remote Sensing Res Grp, Dept Geog, Fac Math & Nat Sci, Meckenheimer Allee 166, D-53115 Bonn, Germany

[2] Univ Tasmania, Sch Geog Planning & Spatial Sci, Coll Sci & Engn, Private Bag 76, Hobart, Tas 7001, Australia

[3] Czech Acad Sci, Global Change Res Inst, Belidla 4a, Brno 60300, Czech Republic

[4] Univ Queensland, Remote Sensing Res Ctr, Sch Earth & Environm Sci, Brisbane, Qld 4072, Australia

[5] CSIRO, Land & Water, Dutton Pk, Qld 4001, Australia

[6] CSIRO, Space & Astron, Kensington, WA 6151, Australia

[7] Univ Toulouse, Ctr Etudes Spatiales Biosphere, UPS, CNES,CNRS,IRD, F-31401 Toulouse 9, France

来源：

IGARSS 2023 - 2023 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM | 2023年

关键词：

Uncrewed aerial system; drone; imaging spectroscopy; hyperspectral; DART-Lux; Fluspect-Cx; chlorophyll a plus b; carotenoids; anthocyanin; LEAF;

D O I：

10.1109/IGARSS52108.2023.10281746

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

In this study, we demonstrated feasibility of a full three-dimensional (3D) reconstruction of a spatially and structurally heterogeneous forest stand of tall Australian eucalypt trees from terrestrial laser scanning (TLS) of individual trees. We provide a direct validation of the Discrete Anisotropic Radiative Transfer (DART) model bidirectional Monte Carlo path tracing (DART-Lux) by comparing a drone-based hyperspectral acquisition of the studied forest with a corresponding DART forward simulation. Finally, we successfully retrieved from a drone hyperspectral imagery contents of leaf chlorophylls a+b (Cab), total carotenoids (Ccar), and anthocyanins (Cant) for sunlit parts of the eucalypt canopy with random forest regressions trained on 2268 spectral simulations of the study site carried out in coupled Fluspect-Cx and DART models.

引用

页码：2683 / 2686

页数：4

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