Results 11 to 20 of about 1,194 (211)

Combining Spectral, Spatial-Contextual, and Structural Information in Multispectral UAV Data for Spruce Crown Delineation

Remote Sensing, 2022
Precise delineation of individual tree crowns is critical for accurate forest biophysical parameter estimation, species classification, and ecosystem modelling.
Aravind Harikumar, Petra D’Odorico, Ingo Ensminger   +2 more
doaj   +1 more source

INDIVIDUAL BANANA TREE CROWN DELINEATION USING UNMANNED AERIAL VEHICLE (UAV) IMAGES [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021
Individual Tree Crown (ITC) delineation from aerial imageries plays an important role in forestry management and precision farming. Several conventional as well as machine learning and deep learning algorithms have been recently used in ITC detection ...
S. Kuikel, B. Upadhyay, D. Aryal, S. Bista, B. Awasthi, S. Shrestha   +5 more
doaj   +1 more source

Oblique view individual tree crown delineation

International Journal of Applied Earth Observations and Geoinformation, 2021
Individual tree crown (ITC) segmentation supports numerous applications in forest management and ecology. In the latter context, special attention is dedicated to the study of angular reflection effects, caused by the interaction of incident sunlight ...
Christian Kempf, Jiaojiao Tian, Franz Kurz, Pablo D’Angelo, Thomas Schneider, Peter Reinartz   +5 more
doaj   +1 more source

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

Remote 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, Scott V. Ollinger, Andrew P. Ouimette, Rebecca Sanders-DeMott, Michael W. Palace, Mark J. Ducey, Franklin B. Sullivan, David Basler, David A. Orwig   +8 more
doaj   +1 more source

RandCrowns: A Quantitative Metric for Imprecisely Labeled Tree Crown Delineation

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Supervised methods for object delineation in remote sensing require labeled ground-truth data. Gathering sufficient high quality ground-truth data is difficult, especially when targets are of irregular shape or difficult to distinguish from background or
Dylan Stewart, Alina Zare, Sergio Marconi, Ben G. Weinstein, Ethan P. White, Sarah J. Graves, Stephanie A. Bohlman, Aditya Singh   +7 more
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 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, C. Zhang, L. Liang, H. Zhang, Q. Ma   +4 more
doaj   +1 more source

A New Individual Tree Species Recognition Method Based on a Convolutional Neural Network and High-Spatial Resolution Remote Sensing Imagery

Remote Sensing, 2021
Tree species surveys are crucial to forest resource management and can provide references for forest protection policy making. The traditional tree species survey in the field is labor-intensive and time-consuming, supporting the practical significance ...
Shijie Yan, Linhai Jing, Huan Wang
doaj   +1 more source

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

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, Lili Lin, Christopher J. Post, Elena A. Mikhailova, Kunyong Yu, Huirong Fang, Jian Liu   +6 more
doaj   +1 more source

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

The 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

Fusion of crown and trunk detections from airborne UAS based laser scanning for small area forest inventories

International Journal of Applied Earth Observations and Geoinformation, 2021
High density point clouds from unmanned airborne laser scanning (UALS) systems have great potential for small area forest inventories. We propose an UALS-based tree level inventory method that takes advantage of both the segmented crowns and segmented ...
Mikko Kukkonen, Matti Maltamo, Lauri Korhonen, Petteri Packalen   +3 more
doaj   +1 more source