Results 71 to 80 of about 7,830 (229)

Classification of tree species and standing dead trees in Boreal forests using UAV‐based RGB, multispectral, and LiDAR point clouds

Remote Sensing in Ecology and Conservation, EarlyView.
We evaluated single‐ and multi‐sensor UAV approaches for classifying tree species and standing dead trees in boreal forests, focusing on key biodiversity indicators such as European aspen. Using spectral and structural features extracted from RGB, multispectral (MSP), and LiDAR point clouds for 1,205 field‐measured trees, we compared classification ...
Anton Kuzmin, Lauri Korhonen, Topi Tanhuanpää, Mikko Kukkonen, Matti Maltamo, Timo Kumpula   +5 more
wiley   +1 more source

Retrospective image analysis for long‐term demography using Google Earth imagery

Remote Sensing in Ecology and Conservation, EarlyView.
We demonstrate that high‐resolution Google Earth imagery, combined with minimal field validation, enables retrospective tracking of individual invasive plants. The image shows one of the monitored individuals of Opuntia sp. in Greece. Our approach reveals long‐term demographic patterns, recruitment dynamics, and spatial expansion without continuous ...
Erola Fenollosa, Garrett Cohen, Roberto Salguero‐Gómez   +2 more
wiley   +1 more source

Multispectral camera as spatio-spectrophotometer under uncontrolled illumination

Optics Express, 2019
Multispectral constancy enables the illuminant invariant representation of multi-spectral data. This article proposes an experimental investigation of multispectral constancy through the use of multispectral camera as a spectrophotometer for the reconstruction of surface reflectance.
Khan, Haris Ahmad, Thomas, Jean-Baptiste, Hardeberg, Jon Yngve, Laligant, Olivier   +3 more
openaire   +3 more sources

Monitoring of Crustose Coralline Algae Using Low‐Altitude Unmanned Aerial Vehicles in Intertidal Reefs

Remote Sensing in Ecology and Conservation, EarlyView.
High‐resolution visible‐light imagery from low‐altitude unmanned aerial vehicles, combined with superpixel segmentation and a Random Forest classifier, provides an efficient and scalable framework for mapping and monitoring crustose coralline algae and reef habitats.
Po‐Chien Lin, Han‐Yang Yeh, Zhi‐Cheng Huang   +2 more
wiley   +1 more source

Drone‐based radiotelemetry and imagery systems provide an advantage over traditional techniques for estimating survival of dependent juveniles

Wildlife Society Bulletin, EarlyView.
We used drone‐based radiotelemetry and multispectral imagery to estimate detection and survival probabilities of blue‐winged teal broods in Saskatchewan, Canada. Weekly brood survival probabilities, estimated via Cormack‐Jolly‐Seber models, increased with age and were comparable between drone methods.
Grant A. Rhodes, Dylan L. Bakner, Hannah C. Sabatier, Benjamin S. Sedinger, Christopher A. Nicolai, Kevin M. Ringelman   +5 more
wiley   +1 more source

Inversion of the forest dead fuel moisture content by UAV multisepectral image under the new leaves shade

Frontiers in Physics
Forest dead fuel moisture content (FDFMC) is an important factor affecting the occurrence and spread of forest fires. When the leaves have completely fallen, because of no leaves shade, the use of UAV multispectral cameras can achieve the spectral images
Ye Wang, Xinning Wang, Jian Xing
doaj   +1 more source

Potential of multispectral imaging technology for assessment coniferous forests bitten by a bark beetle in Central Bulgaria

MATEC Web of Conferences, 2018
Much of the coniferous forest in Bulgaria is struck by Ips typographus, Ips acuminatus and Ips sexdentatus beetles. The multispectral camera test near the town of Kalofer, Bulgaria in August 2017, showed the good capabilities of remote-piloted aircraft ...
Stoyanova Marina, Kandilarov Alexander, Koutev Vesselin, Nitcheva Olga, Dobreva Polya   +4 more
doaj   +1 more source

Facilitating macrosystem biology with organismal‐scale airborne remote sensing: Challenges and opportunities

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Emergent ecosystem properties, such as population and trait distributions, biodiversity and energy and water fluxes, occur because of the dynamic interactions of individuals in their environment.
Sarah J. Graves, Ritesh Chowdhry, Meilun Zhou, Ira Harmon, Ben Weinstein, S. K. Morgan Ernest, Alina Zare, Ethan P. White, Stephanie A. Bohlman   +8 more
wiley   +1 more source

Wide-Field-of-View Multispectral Camera Design for Continuous Turfgrass Monitoring. [PDF]

Sensors (Basel), 2023
Smeesters L, Verbaenen J, Schifano L, Vervaeke M, Thienpont H, Teti G, Forconi A, Lulli F.   +7 more
europepmc   +1 more source

Television camera of the visible and near-infrared ranges

Известия высших учебных заведений России: Радиоэлектроника, 2015
Variants of design of a multispectral TV camera of visible and near infrared (RGB&NIR) of ranges are considered. The test bench of single image sensor RGB&NIR-camera is developed. The review of the most perspective applications of com.pact RGB&NIR-camera
P. S. Baranov, A. A. Chirkunova
doaj