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canopy height

Capability of GLAS/ICESat data to estimate forest canopy height and volume in mountainous forests of Iran

Capability of GLAS/ICESat data to estimate forest canopy height and volume in mountainous forests of Iran

... Principal Component Regressions (PCR) defined as a three step multivariate method including performing Principal Component Analysis (PCA); selection of relevant Principal Components (PCs); and MLR between selected PCs ...

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A Photogrammetric Workflow for the Creation of a Forest Canopy Height Model from Small Unmanned Aerial System Imagery

A Photogrammetric Workflow for the Creation of a Forest Canopy Height Model from Small Unmanned Aerial System Imagery

... digital canopy height models with field ...breast height (CBH; measured at 130 cm), species, distance and azimuth from the plot ...the canopy. For each plot, dominant height was ...

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Canopy Height Estimation in French Guiana with LiDAR ICESat/GLAS Data Using Principal Component Analysis and Random Forest Regressions

Canopy Height Estimation in French Guiana with LiDAR ICESat/GLAS Data Using Principal Component Analysis and Random Forest Regressions

... estimate canopy heights with either polarimetric SAR interferometry (PolInSAR) [12–15] or SAR tomography ...for canopy height estimation, showed promising results ...in canopy height ...

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Creation of a Canopy Height Model from mini-UAV Imagery

Creation of a Canopy Height Model from mini-UAV Imagery

... The arrival of mini-UAV (Unmanned Aerial Vehicle), these small autonomous aircrafts, has opened the doors to a new environmental data acquisition’s approach. In forestry, low-altitude imagery from UAV can be used to ...

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Can regional aerial images from orthophoto surveys produce high quality photogrammetric Canopy Height Model? A single tree approach in Western Europe

Can regional aerial images from orthophoto surveys produce high quality photogrammetric Canopy Height Model? A single tree approach in Western Europe

... grammetric Canopy Height Model (pCHM) which describes the tree canopy ...outer canopy envelope while ALS provides precious information about the sub ca- nopy ...

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Stand-level wind damage can be assessed using diachronic photogrammetric canopy height models

Stand-level wind damage can be assessed using diachronic photogrammetric canopy height models

... through the analysis of changes in canopy height. The pro- cessing of aerial photograph benefits currently of the rapid development of image-matching algorithms, which establish the spatial correspondences ...

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Stand-level wind damage can be assessed using diachronic photogrammetric canopy height models

Stand-level wind damage can be assessed using diachronic photogrammetric canopy height models

... through the analysis of changes in canopy height. The pro- cessing of aerial photograph benefits currently of the rapid development of image-matching algorithms, which establish the spatial correspondences ...

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Canopy height estimation on a regional scale : Application to French Guiana

Canopy height estimation on a regional scale : Application to French Guiana

... 103 Chapter 5 difference between the GLAS centroid elevations and the SRTM elevations, the GLAS canopy height and the SRTM roughness index. Several classifiers, such as CART (Classification And Regression ...

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Classification of riparian forest species (individual tree level) using  UAV-based Canopy Height Model and multi-temporal orthophotos  (Vielsalm, Eastern Belgium)

Classification of riparian forest species (individual tree level) using UAV-based Canopy Height Model and multi-temporal orthophotos (Vielsalm, Eastern Belgium)

... Classification of riparian forest species (individual tree level) using UAV-based Canopy Height Model and multi-temporal orthophotos.. (Vielsalm, Eastern Belgium)I[r] ...

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Determining Tree Height by Polarimetric SAR Interferometry: Methodology

Determining Tree Height by Polarimetric SAR Interferometry: Methodology

... 9 PolInSAR tool tailored to SAOCOM and SARAT specificities allowing these estimates to be made. 9 PolInSAR products and canopy height estimates over the test site of interest. DETERMINING TREE HEIGHT ...

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Drag-model sensitivity of Kelvin-Helmholtz waves in canopy flows

Drag-model sensitivity of Kelvin-Helmholtz waves in canopy flows

... 2 , with g the acceleration of gravity and C d an isotropic drag function available from the experiments, variable across the canopy and equal to zero when y ≥ h. The Reynolds stress −u ′ v ′ is modelled with the ...

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Macroscopic model and numerical simulation of elastic canopy flows

Macroscopic model and numerical simulation of elastic canopy flows

... studying canopy flows, we initially have in mind mimetic approaches to the development of innova- tive ...of canopy flows could lead to discover a feasible way of performing passive flow control ...a ...

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Changes in canopy and crown structure with stand composition

Changes in canopy and crown structure with stand composition

... Key words: TLS; Competition; Crown structure; Plasticity; Sugar maple. Introduction The forest canopy structure can be defined by the position, size and shapes of each tree in a stand [1]. It is necessary to study ...

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Contribution of Spray Droplet Pinning Fragmentation to Canopy Retention

Contribution of Spray Droplet Pinning Fragmentation to Canopy Retention

... Cassie–Baxter wetting regime (Cassie and Baxter, 1944) describes the wetting of rougher (porous) surfaces where air pockets are trapped in the surface texture beneath the liquid. The drop contacts only the top of the ...

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Sensitivity and stability analysis of a rigid canopy flow

Sensitivity and stability analysis of a rigid canopy flow

... This is an author-deposited version published in : http://oatao.univ-toulouse.fr/ Eprints ID : 14503 To link to this article: URL: http://hdl.handle.net/2042/57596 To cite this version : Luminari, Nicola and Airiau, ...

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Conjectures on the enumeration of tableaux of bounded height

Conjectures on the enumeration of tableaux of bounded height

... L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignemen[r] ...

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Galois extensions of height-one commuting dynamical systems

Galois extensions of height-one commuting dynamical systems

... Abstract. We consider a dynamical system consisting of a pair of commuting power series under composition, one noninvertible and another nontorsion invertible, of height one with coefficients in the p-adic ...

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WoaH: A Virtual Reality Work-at-Height Simulator

WoaH: A Virtual Reality Work-at-Height Simulator

... Five participants orally indicated that the vertigo they felt during the sessions was higher when with vibrations. During the experi- ment, tremors have been observed on three participants while on the ladder, indicating ...

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Canopy aerodynamic distance (z-d) estimation  and impact on eddy covariance measurements

Canopy aerodynamic distance (z-d) estimation and impact on eddy covariance measurements

... • Canopy aerodynamic distance and correlation coefficients : – Momentum correlation coefficient (r uw ) is strongly linked to z-d.  Characteristic of the roughness sublayer. – Heat and CO 2 correlation ...

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Tsunami Wave Height Estimation from GPS-Derived Ionospheric Data

Tsunami Wave Height Estimation from GPS-Derived Ionospheric Data

... 7. Conclusion In this paper, we have presented an least squares inversion strategy for tsunami height based on the inversion of single TEC records. This has been tested for three tsunami events. The technique is ...

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