Results 11 to 20 of about 16,908 (163)
Individual Tree Species Classification Using Pseudo Tree Crown (PTC) on Coniferous Forests
Remote SensingConiferous forests in Canada play a vital role in carbon sequestration, wildlife conservation, climate change mitigation, and long-term sustainability.
Kongwen (Frank) Zhang +2 more
doaj +2 more sources
Individual Tree Crown Delineation Using Multispectral LiDAR Data. [PDF]
Sensors (Basel), 2019 In this study, multispectral Light Detection and Ranging (LiDAR) data were utilized to improve delineation of individual tree crowns (ITC) as an important step in individual tree analysis. A framework to integrate spectral and height information for ITC delineation was proposed, and the multi-scale algorithm for treetop detection developed in one of ...
Naveed F, Hu B, Wang J, Hall GB.
europepmc +5 more sources
Individual Tree Crown Detection Using UAV Orthomosaic
Engineering, Technology & Applied Science Research, 2021 Unmanned Aerial Vehicles (UAVs) are increasingly used in forestry as they are economical and flexible. This study aims to present the advantages of the drone photogrammetry method in collecting individual tree crowns, as individual tree crown detection could deliver essential ecological and economic information.
K. N. Tahar +5 more
openaire +2 more sources
Variation in litter under individual tree crowns: Implications for scattered tree ecosystems [PDF]
Austral Ecology, 2010 AbstractIn forest ecosystems litter is usually assessed in terms of the average amount produced by the canopy. In scattered tree ecosystems this approach is problematic because the canopy is discontinuous and the spatial arrangement of litter highly variable.
McElhinny, Chris +3 more
openaire +2 more sources
NEON Crowns: a remote sensing derived dataset of 100 million individual tree crowns [PDF]
, 2020 Abstract Forests provide essential biodiversity, ecosystem and economic services. Information on individual trees is important for understanding the state of forest ecosystems but obtaining individual-level data at broad scales is challenging due to the costs and logistics of data collection.
Ben. G. Weinstein +6 more
openaire +1 more source
International Journal of Digital Earth, 2023 Individual tree detection and delineation (ITDD) is an important subject in forestry and urban forestry. This study represents the first research to propose the concept of crown resolution to comprehensively evaluate the co-effect of image resolution and
Zhenbang Hao +6 more
doaj +1 more source
Individual Tree Crown Segmentation and Classification of 13 Tree Species Using Airborne Hyperspectral Data [PDF]
Remote Sensing, 2018 Knowledge of the distribution of tree species within a forest is key for multiple economic and ecological applications. This information is traditionally acquired through time-consuming and thereby expensive field work. Our study evaluates the suitability of a visible to near-infrared (VNIR) hyperspectral dataset with a spatial resolution of 0.4 m for ...
Julia Maschler +2 more
openaire +2 more sources
INDIVIDUAL TREE CROWN DELINEATION USING MULTI-WAVELENGTH TITAN LIDAR DATA [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017 The inability to detect the Emerald Ash Borer (EAB) at an early stage has led to the enumerable loss of different species of ash trees. Due to the increasing risk being posed by the EAB, a robust and accurate method is needed for identifying Individual ...
F. Naveed, B. Hu
doaj +1 more source
Individual Tree Crown Delineation and Species Classification in Urban Landscapes from Multi-Source Remote Sensing by Integrating SAM and Watershed Segmentation [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information SciencesUrban trees enhance the urban environment through various ecosystem services. Individual tree delineation and species classification provide information on the location, structure, and species of each tree from remote sensing datasets, offering valuable ...
J. Yuan +4 more
doaj +1 more source
From Peaks to Crowns: A Morphology-Based UAV-LiDAR Framework for Individual Tree Segmentation [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information SciencesRecognising individual trees has important applications in forest ecology and management. Conventional individual tree segmentation methods tend to favour dominant trees with pronounced canopy surface features but have limited capability in detecting ...
Y. Guo +9 more
doaj +1 more source