Results 21 to 30 of about 219 (129)

CANOPY LIDAR POINT CLOUD DATA K-MEANS CLUSTERING WATERSHED SEGMENTATION METHOD [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
Airborne laser LiDAR has widely applied in the accurate extraction of single tree canopy for inventory of precision forestry. Due to the over-segmentation phenomenon occurring in the traditional watershed single-wood segmentation, this paper presents a ...
Y. Mu, G. Zhou, H. Wang
doaj   +1 more source

Improving the Precision of Tree Counting by Combining Tree Detection with Crown Delineation and Classification on Homogeneity Guided Smoothed High Resolution (50 cm) Multispectral Airborne Digital Data

Remote Sensing, 2012
A method of counting the number of coniferous trees by species within forest compartments was developed by combining an individual tree crown delineation technique with a treetop detection technique, using high spatial resolution optical sensor data ...
Masato Katoh, François A. Gougeon
doaj   +1 more source

A Region-Based Hierarchical Cross-Section Analysis for Individual Tree Crown Delineation Using ALS Data

Remote Sensing, 2017
In recent years, airborne Light Detection and Ranging (LiDAR) that provided three-dimensional forest information has been widely applied in forest inventory and has shown great potential in automatic individual tree crown delineation (ITCD).
Yinghui Zhao, Yuanshuo Hao, Zhen Zhen, Ying Quan   +3 more
doaj   +1 more source

Single-Pass UAV-Borne GatorEye LiDAR Sampling as a Rapid Assessment Method for Surveying Forest Structure

Remote Sensing, 2020
Unmanned aerial vehicles (UAV) allow efficient acquisition of forest data at very high resolution at relatively low cost, making it useful for multi-temporal assessment of detailed tree crowns and forest structure.
Gabriel Atticciati Prata, Eben North Broadbent, Danilo Roberti Alves de Almeida, Joseph St. Peter, Jason Drake, Paul Medley, Ana Paula Dalla Corte, Jason Vogel, Ajay Sharma, Carlos Alberto Silva, Angelica Maria Almeyda Zambrano, Ruben Valbuena, Ben Wilkinson   +12 more
doaj   +1 more source

Different sensor systems for the application of variable rate technology in permanent crops

Tehnički Glasnik, 2018
The paper presents a review of different sensory systems for trees’ characterization and detection in permanent crops and the detection of plant health status in crop conditions for the purpose of applying the variable application rate.
Davor Petrović, Mladen Jurišić, Vjekoslav Tadić, Ivan Plaščak, Željko Barač   +4 more
doaj   +1 more source

CROWN-LEVEL TREE SPECIES CLASSIFICATION USING INTEGRATED AIRBORNE HYPERSPECTRAL AND LIDAR REMOTE SENSING DATA [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
Mapping tree species is essential for sustainable planning as well as to improve our understanding of the role of different trees as different ecological service. However, crown-level tree species automatic classification is a challenging task due to the
Z. Wang, Z. Wang, J. Wu, Y. Wang, Y. Wang, X. Kong, X. Kong, H. Bao, H. Bao, Y. Ni, Y. Ni, L. Ma, L. Ma, J. Jin, J. Jin   +14 more
doaj   +1 more source

Individual Tree Crown Delineation from UAS Imagery Based on Region Growing and Growth Space Considerations

Remote Sensing, 2020
The development of unmanned aerial systems (UAS) equipped with various sensors (e.g., Lidar, multispectral sensors, and/or cameras) has provided the capability to “see” the individual trees in a forest.
Jianyu Gu, Heather Grybas, Russell G. Congalton   +2 more
doaj   +1 more source

Living on the edge: Habitat characteristics of northern myotis at the periphery of its distribution

The Journal of Wildlife Management, EarlyView.
Northern myotis selected tall trees with minimal decay, in patches with other roosting options. In our study area, these trees occurred in narrow bands within an agricultural matrix, differing from contiguous forest at the core of the species' distribution. Nevertheless, bats selected the tallest trees in the densest patches available.
Jacob J. E. Melhuish, Andrea R. Litt, Michael J. Borgreen, Heather F. Harris   +3 more
wiley   +1 more source

Estimating Stem Volume in Eucalyptus Plantations Using Airborne LiDAR: A Comparison of Area- and Individual Tree-Based Approaches

Remote Sensing, 2020
Forest plantations are globally important for the economy and are significant for carbon sequestration. Properly managing plantations requires accurate information about stand timber stocks. In this study, we used the area (ABA) and individual tree (ITD)
Rodrigo Vieira Leite, Cibele Hummel do Amaral, Raul de Paula Pires, Carlos Alberto Silva, Carlos Pedro Boechat Soares, Renata Paulo Macedo, Antonilmar Araújo Lopes da Silva, Eben North Broadbent, Midhun Mohan, Hélio Garcia Leite   +9 more
doaj   +1 more source

Rewilding's technological experiments: Virtual reality and scalable narratives of rewilding in the Scottish highlands

People and Nature, EarlyView.
Abstract Depictions of rewilded landscapes reveal the underlying principles shaping the future of rewilding. This paper analyses a virtual reality (VR) model of a rewilding project in the Scottish Highlands that is advertised as a vision of a rewilded nature in 50 to 100 years' time.
Nick Sidwell
wiley   +1 more source