Results 11 to 20 of about 1,026 (242)

INDIVIDUAL TREE CROWN DELINEATION USING MULTI-WAVELENGTH TITAN LIDAR DATA [PDF]

open access: yesThe 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   +3 more sources

ACCURACY ASSESSMENT OF CROWN DELINEATION METHODS FOR THE INDIVIDUAL TREES USING LIDAR DATA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
Forest canopy density and height are used as variables in a number of environmental applications, including the estimation of biomass, forest extent and condition, and biodiversity.
K. T. Chang   +3 more
doaj   +3 more sources

The co-effect of image resolution and crown size on deep learning for individual tree detection and delineation

open access: yesInternational 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   +3 more sources

Modular Fusion for Individual Tree Crown Delineation from Airborne LiDAR Data [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Accurate delineation of individual tree crowns (ITC) is essential for forest inventory, biomass estimation, and ecological monitoring. Airborne LiDAR data provide an effective basis for this task, but accurate delineation remains challenging due to ...
J. Gourde, B. Hu, Q. Li
doaj   +2 more sources

Individual Tree Crown Delineation in Heterogeneous Urban Environments Using High-Resolution Airborne Imagery

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Urban trees are crucial to mitigate the increasing urban temperatures caused by climate change. Tree inventories, which are useful for urban planning and tree management, are mostly based on expensive and incomplete in situ measurements. Freely available
Oliver Schutte   +2 more
doaj   +2 more sources

Deep learning based individual tree crown delineation from panchromatic aerial imagery [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Accurate delineation of individual tree crowns (ITC) enables a better understanding of tree-level growth dynamics and evaluating tree vitality. In recent year, researches have introduced deep learning techniques in this field.
J. Tian   +5 more
doaj   +6 more sources

Individual Tree Crown Delineation from Airborne Laser Scanning for Diseased Larch Forest Stands

open access: yesRemote Sensing, 2017
Airborne laser scanning (ALS) can be utilised to derive canopy height models (CHMs) for individual tree crown (ITC) delineation. In the case of forest areas subject to defoliation and dieback as a result of disease, increased irregularities across the ...
Chloe Barnes   +5 more
doaj   +3 more sources

The accuracy of image-based individual tree crown detection and delineation across vegetation types [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Australia's terrestrial ecosystems are critical to the global carbon cycle, yet they face numerous environmental pressures such as forest degradation and biodiversity loss.
N. Pucino   +3 more
doaj   +3 more sources

Delineation of Individual Tree Crowns Using High Spatial Resolution Multispectral WorldView-3 Satellite Imagery

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Delineation of individual tree crowns can provide valuable information for sustainable forest management and environmental protection. However, it is hard to find a reliable tree crown delineation method that can continually generate expected results in ...
Fei Tong   +3 more
doaj   +1 more source

INDIVIDUAL TREE CROWN DELINEATION FROM HIGH SPATIAL RESOLUTION IMAGERY USING U-NET [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021
The objective of this study was to explore the utilization of deep learning networks in individual tree crown (ITC) delineation, a very important step in individual tree analysis.
B. Hu, W. Jung
doaj   +1 more source

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