Results 21 to 30 of about 2,623 (238)

Tree Stem Detection and Crown Delineation in a Structurally Diverse Deciduous Forest Combining Leaf-On and Leaf-Off UAV-SfM Data

open access: yesRemote Sensing, 2023
Accurate detection and delineation of individual trees and their crowns in dense forest environments are essential for forest management and ecological applications.
Steffen Dietenberger   +10 more
doaj   +1 more source

Tree Species Traits Determine the Success of LiDAR-Based Crown Mapping in a Mixed Temperate Forest

open access: yesRemote Sensing, 2020
The ability to automatically delineate individual tree crowns using remote sensing data opens the possibility to collect detailed tree information over large geographic regions.
Jack H. Hastings   +8 more
doaj   +1 more source

DeepForest: A Python package for RGB deep learning tree crown delineation [PDF]

open access: yesMethods in Ecology and Evolution, 2020
Abstract Remote sensing of forested landscapes can transform the speed, scale, and cost of forest research. The delineation of individual trees in remote sensing images is an essential task in forest analysis.
Ben G. Weinstein   +5 more
openaire   +5 more sources

The Potential of Widespread UAV Cameras in the Identification of Conifers and the Delineation of Their Crowns

open access: yesForests, 2022
With the ever-improving advances in computer vision and Earth observation capabilities, Unmanned Aerial Vehicles (UAVs) allow extensive forest inventory and the description of stand structure indirectly. We performed several flights with different UAVs and popular sensors over two sites with coniferous forests of various ages and flight levels using ...
Jan Komárek   +3 more
openaire   +2 more sources

Individual Tree Crown Delineation and Species Classification in Urban Landscapes from Multi-Source Remote Sensing by Integrating SAM and Watershed Segmentation [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Urban 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

Does the implementation of Automatic Individual Tree Crown Delineation (ITCD) impact the early detection of bark beetle (BB) infestation in Norway spruce forests? [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Early detection of bark beetle (BB) infestations in Norway spruce forests is essential for effective forest management. While UAV imagery offers high-resolution data, selecting appropriate crown pixels to detect subtle spectral changes during early BB ...
S. Bijou   +3 more
doaj   +1 more source

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   +1 more source

Tree Crown Mapping in Managed Woodlands (Parklands) of Semi-Arid West Africa Using WorldView-2 Imagery and Geographic Object Based Image Analysis

open access: yesSensors, 2014
Detailed information on tree cover structure is critical for research and monitoring programs targeting African woodlands, including agroforestry parklands.
Martin Karlson   +2 more
doaj   +1 more source

Tree crown detection and delineation in satellite images using probabilistic voting

open access: yesRemote Sensing Letters, 2017
ABSTRACTCrop yield forecasting in a region has become an important research area due to global warming and related climate changes. Although this can be performed by available statistical information, obtaining recent and up to date data to extract reliable statistical information is not easy.
Ozcan, Abdullah H.   +3 more
openaire   +2 more sources

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   +1 more source

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