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ESTIMATING TREE HEIGHT USING LOW-COST UAV [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023
Precision agriculture (PA) is defined as an agricultural management based on the observation, measurement, and response of a set of quantitative and qualitative variables that affects agricultural production.
G. Vacca
doaj   +3 more sources

Fisheye Image Detection of Trees Using Improved YOLOX for Tree Height Estimation [PDF]

open access: yesSensors, 2022
Tree height is an essential indicator in forestry research. This indicator is difficult to measure directly, as well as wind disturbance adds to the measurement difficulty.
Jiayin Song   +7 more
doaj   +2 more sources

Using Multi-Spectral UAV Imagery to Extract Tree Crop Structural Properties and Assess Pruning Effects [PDF]

open access: yesRemote Sensing, 2018
Unmanned aerial vehicles (UAV) provide an unprecedented capacity to monitor the development and dynamics of tree growth and structure through time. It is generally thought that the pruning of tree crops encourages new growth, has a positive effect on ...
Kasper Johansen   +2 more
doaj   +4 more sources

New Insights into Tree Height Distribution Based on Mixed Effects Univariate Diffusion Processes. [PDF]

open access: yesPLoS ONE, 2016
The aim of this paper is twofold: to introduce the mathematics of stochastic differential equations (SDEs) for forest dynamics modeling and to describe how such a model can be applied to aid our understanding of tree height distribution corresponding to ...
Petras Rupšys
doaj   +2 more sources

UAV Photogrammetric Surveys for Tree Height Estimation

open access: yesDrones
In the context of precision agriculture (PA), geomatic surveys exploiting UAV (unmanned aerial vehicle) platforms allow the dimensional characterization of trees.
Giuseppina Vacca, Enrica Vecchi
doaj   +2 more sources

Extraction and analysis of tree canopy height information in high-voltage transmission-line corridors by using integrated optical remote sensing and LiDAR

open access: yesGeodesy and Geodynamics, 2023
Traditional inspection methods cannot quickly and accurately monitor tree barriers and safeguard the transmission lines. To solve these problems, in this study, we proposed a rapid canopy height information extraction method using optical remote sensing ...
Jinpeng Hao   +6 more
doaj   +1 more source

The height of the Lyndon tree [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2013
We consider the set $\mathcal{L ...
Lucas Mercier, Philippe Chassaing
doaj   +1 more source

TREE CANOPY HEIGHT ESTIMATION AND ACCURACY ANALYSIS BASED ON UAV REMOTE SENSING IMAGES [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
The development of unmanned aerial vehicle (UAV) technology makes the traditional method of danger tree monitoring more digital and convenient. In order to explore the accuracy of tree height measurement by general consumer UAV, this paper takes a campus
J. Hao   +5 more
doaj   +1 more source

FOREST RESOURCE MEASUREMENTS BY COMBINATION OF TERRESTRIAL LASER SCANNING AND DRONE USE [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
Using terrestrial laser scanning (TLS), forest attributes such as diameter at breast height (DBH) and tree location can be measured accurately. However, due to low penetration of laser pulses to tree tops, tree height measurements are typically ...
K. Cheung, M. Katoh, M. Horisawa
doaj   +1 more source

Tree height and tropical forest biomass estimation [PDF]

open access: yesBiogeosciences, 2013
Tropical forests account for approximately half of above-ground carbon stored in global vegetation. However, uncertainties in tropical forest carbon stocks remain high because it is costly and laborious to quantify standing carbon stocks.
M. O. Hunter   +3 more
doaj   +1 more source

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