[en] 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 characterize forest ecosystem structure through a Canopy Height Model (CHM). In this research, authors developed a new workflow for acquiring low-altitude aerial images with a mini-UAV and used them for the construction of a high resolution Canopy Height Model. An accuracy analysis is performed and shows that individual dominant tree height can be measured from (UAV-photo-) CHM with a precision of 2 meters. [fr] Le récent développement des mini avions sans pilote a ouvert de nouvelles opportunitées en terme d'acquisition d'informations géographiques dans les sciences environnementales. En foresterie, les images aériennes à basse altitude peuvent servir de base à la modélisation de la canopée forestière. Dans cette étude, une nouvelle chaine d'acquisition et de traitement des images d'un mini-drone est mise en œuvre dans le but de générer un Modèle Numérique de Canopée (MNC) de haute résolution. Une analyse de la précision du MNC montre qu'il est possible d'y déterminer la hauteur des arbres dominants avec une précision de 2 m.
Research Center/Unit :
Gembloux Agro-Bio Tech - Unité de Gestion des Ressources forestières et des Milieux naturels
Disciplines :
Environmental sciences & ecology
Author, co-author :
Lisein, Jonathan ; Université de Liège - ULiège > Forêts, Nature et Paysage > Gestion des ressources forestières et des milieux naturels
Bonnet, Stéphanie ; Université de Liège - ULiège > Forêts, Nature et Paysage > Gestion des ressources forestières et des milieux naturels
Lejeune, Philippe ; Université de Liège - ULiège > Forêts, Nature et Paysage > Gestion des ressources forestières et des milieux naturels
Language :
English
Title :
Creation of a Canopy Height Model from mini-UAV Imagery
Alternative titles :
[en] Création d'un Modèle Numérique de Canopée à partir d'images aériennes d'un mini-drone
Publication date :
12 September 2012
Number of pages :
A0
Event name :
ForestSAT 2012 | Promoting science-based applications of remote sensing & other spatial data in forested systems
Event organizer :
Warren B. Cohen (USDA Forest Service), Michael G. Wing and Maureen Duane (Oregon State University)
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