Results 91 to 100 of about 11,080 (261)

SWIR photodetector development at Fraunhofer IAF

, 2022
Paper 948107, 9 S.For surveillance and reconnaissance applications in the short-wave infrared (SWIR) spectral range, the imaging sys-tems have to cope with usually very low photon flux densities.
Sieck, A., Kleinow, P., Rutz, Frank, Aidam, Rolf, Walther, Martin, Heussen, Henning, Bronner, Wolfgang   +6 more
core   +1 more source

Robust estimation of key leaf traits from reflectance spectroscopy of herbarium specimens

Methods in Ecology and Evolution, EarlyView.
Abstract Community‐wide efforts to digitize herbarium specimens have facilitated novel uses of specimen data across scales. However, the need for destructive sampling has prevented large‐scale examination of foliar functional traits. We demonstrate that nondestructive reflectance spectra are an effective tool for estimating leaf traits from herbarium ...
Aaron K. Lee, Lauren Vander Esch, Jin Oong, Brett Fredericksen, Juan Ramirez‐Lerma, J. Antonio Guzmán, Dawson White, Tim Whitfeld, Jose Eduardo Meireles, Jeannine Cavender‐Bares, Ya Yang   +10 more
wiley   +1 more source

All-Weather Drone Vision: Passive SWIR Imaging in Fog and Rain

Drones
Short-wave-infrared (SWIR) imaging can extend drone operations into fog and rain, yet the optimum spectral strategy remains unclear. We evaluated a drone-borne quantum-dot SWIR camera inside a climate-controlled tunnel that generated calibrated advection
Alexander Bessonov, Aleksei Rozanov, Richard White, Galih Suwito, Ivonne Medina-Salazar, Marat Lutfullin, Dmitrii Gusev, Ilya Shikov   +7 more
doaj   +1 more source

Spectral response of guava leaves under infestation by Costalimaita ferruginea (coleoptera: Chrysomelidae)

Agricultural and Forest Entomology, EarlyView.
Coccinellidae (Coleoptera), Miridae (Hemiptera), Hemerobiidae (Neuroptera), Pentatomidae (Hemiptera), Anystidae (Acari), Erythraeidae (Acari) and spiders (Araneidae, Oxyopidae and Salticidae) fed on the invasive paropsine leaf beetles in Marlborough, New Zealand.
Souradji I. Bachirou, Pedro G. Peixoto, David L. Rosalen   +2 more
wiley   +1 more source

Spontaneously Formed PbS Colloidal Quantum Dot Microstructures Make for High‐Performance Top‐Illuminated Short‐Wave Infrared Imager

Small Structures
A high‐performance top‐illuminated short‐wave infrared (SWIR) imager is achieved based on the solution‐processed PbS colloidal quantum dot (CQD) photodiodes, by introducing the spontaneously formed PbS microstructures on the active layer through managing
Hao‐Wen Huang, Qian Yang, Hong‐Yu Liu, Yan Yan, Xing Xiong, Ya‐Nan Zhong, Xu Gao, Ze‐Ke Liu, Wan‐Li Ma, Jian‐Long Xu, Sui‐Dong Wang   +10 more
doaj   +1 more source

Real-time visualization of dextran extravasation in intermittent hypoxia mice using noninvasive SWIR imaging

International audienceContext. Imaging tools are crucial for studying the vascular network and its barrier function in various physiopathological conditions. Shortwave infrared window (SWIR) optical imaging allows non-invasive, in-depth exploration.
Le Guével, Xavier, Josserand, Véronique, Briançon-Marjollet, Anne, Henry, Maxime, Harki, Olfa, Baulin, Vladimir, A   +5 more
core   +1 more source

A novel method based on high‐resolution imaging spectroscopy to predict fine‐root traits and the economics space of fresh tree roots

New Phytologist, EarlyView.
Maps of the estimated root nitrogen concentration in the < 0.5‐mm‐diameter classes of 20 woody species based on the imaging spectroscopy using the shortwave infrared spectral region. Summary Tree fine‐root morphological, anatomical, and chemical traits are important to reflect belowground resource acquisition strategies to support tree growth, but ...
Naoki Makita, Natsuko Tanikawa, Tatsuro Nakaji   +2 more
wiley   +1 more source

Comparative analysis of high-temperature targets retrieved from SWIR and TIR data

Frontiers in Environmental Science
IntroductionForest fires, grassland fires, heap coking, straw burning, and volcanic eruptions are thermal anomalies. They attract attention and are designated as high-temperature targets.
Yifan Yu, Jun Pan, Huishi Du
doaj   +1 more source

Kısa Dalgaboyu Kızılötesi (SWIR) Epikatman Geliştirilmesi Projesi

, 2020
Kısa Dalgaboyu Kızılötesi (SWIR) Epikatman Geliştirilmesi ...
Altuntaş İsmail, Demir İlkay
core  

Dual SWIR Reflectance/Transillumination Imaging for Caries Detection [PDF]

, 2023
Short wavelength infrared (SWIR) and near-infrared (NIR) imaging methods have been in development for almost two decades for dental use. Due to the high transparency of enamel in the NIR, separate novel imaging configurations such as occlusal ...
Ng, Chung
core