Articles with "spectral indices" as a keyword



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Introduction of Spatio-Spectral Indices for Using Spatial Data in Multispectral Image Classification

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Published in 2019 at "Journal of the Indian Society of Remote Sensing"

DOI: 10.1007/s12524-019-00960-4

Abstract: Abstract Different methods of using spatial information in image classification are presented. One approach is to quantify image texture to produce features for use in classifiers, and there are various methods with adjustable parameters for… read more here.

Keywords: image; spectral indices; using spatial; spatio spectral ... See more keywords
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Comparison of various modelling approaches for water deficit stress monitoring in rice crop through hyperspectral remote sensing

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Published in 2019 at "Agricultural Water Management"

DOI: 10.1016/j.agwat.2018.08.029

Abstract: Abstract This study was conducted to understand the behaviour of ten rice genotypes for different water deficit stress levels. The spectroscopic hyperspectral reflectance data in the range of 350–2500 nm was recorded and relative water content… read more here.

Keywords: deficit stress; spectral indices; water; stress ... See more keywords
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Using optimized three-band spectral indices to assess canopy N uptake in corn and wheat

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Published in 2021 at "European Journal of Agronomy"

DOI: 10.1016/j.eja.2021.126286

Abstract: Abstract Nitrogen (N) fertilization management plays an important role in optimizing crop growth and yield. Concerns over environmental risk require a quick, accurate, non-destructive determination of the N status of crops. Hyperspectral remote sensing allows… read more here.

Keywords: spectral indices; three band; wheat; corn ... See more keywords
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The effects of analgesics on central processing of tonic pain: A cross-over placebo controlled study

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Published in 2017 at "Neuropharmacology"

DOI: 10.1016/j.neuropharm.2017.06.022

Abstract: Introduction: Opioids and antidepressants that inhibit serotonin and norepinephrine reuptake (SNRI) are recognized as analgesics to treat moderate to severe pain, but the central mechanisms underlying their analgesia remain unclear. This study investigated how brain… read more here.

Keywords: tonic pain; spectral indices; venlafaxine; brain ... See more keywords
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Detecting tree mortality with Landsat-derived spectral indices: Improving ecological accuracy by examining uncertainty

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Published in 2020 at "Remote Sensing of Environment"

DOI: 10.1016/j.rse.2019.111497

Abstract: Abstract Satellite-derived fire severity metrics are a foundational tool used to estimate fire effects at the landscape scale. Changes in surface characteristics permit reasonably accurate delineation between burned and unburned areas, but variability in severity… read more here.

Keywords: uncertainty; spectral indices; accuracy; mortality ... See more keywords
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Generalized statistical mechanics of cosmic rays: Application to positron-electron spectral indices

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Published in 2018 at "Scientific Reports"

DOI: 10.1038/s41598-018-20036-6

Abstract: Cosmic ray energy spectra exhibit power law distributions over many orders of magnitude that are very well described by the predictions of q-generalized statistical mechanics, based on a q-generalized Hagedorn theory for transverse momentum spectra… read more here.

Keywords: energy; spectral indices; boldsymbol boldsymbol; generalized statistical ... See more keywords
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Biomass estimation of desert steppe based on spectral indices along a precipitation gradient

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Published in 2018 at "Spectroscopy Letters"

DOI: 10.1080/00387010.2018.1463267

Abstract: Abstract Accurate estimation of grassland biomass in desert steppe is crucial for various studies such as grassland dynamic monitoring, scientific management, and environmental degradation. Observational tests were conducted in the Ordos desert steppe in July… read more here.

Keywords: biomass; spectral indices; grassland biomass; desert steppe ... See more keywords
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Applicability of optimized hyperspectral indices for estimating Betalain content in Suaeda salsa

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Published in 2021 at "International Journal of Remote Sensing"

DOI: 10.1080/01431161.2021.1910374

Abstract: ABSTRACT Betalains (Bt) are a collective group of natural, edible, red-yellow plant pigments, and are an important biochemical parameter in vegetable growth. Betalains are believed to have fungicidal activity and their presence in plants is… read more here.

Keywords: suaeda salsa; betalain; spectral indices; reflectance ... See more keywords
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New spectral indices for detection of urban built-up surfaces and its sub-classes in AVIRIS-NG hyperspectral imagery

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Published in 2020 at "Geocarto International"

DOI: 10.1080/10106049.2020.1805031

Abstract: The distribution of urban built-up surfaces is a key indicator of the level of urbanization, which originates from several ecological effects. In this study, three new spectral indices i.e. New Imp... read more here.

Keywords: detection urban; indices detection; built surfaces; spectral indices ... See more keywords
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Comparison of stellar populations in simulated and real post-starburst galaxies in MaNGA

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Published in 2020 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/staa2358

Abstract: Recent integral field spectroscopic (IFS) surveys have revealed radial gradients in the optical spectral indices of post-starburst (PSB) galaxies, which can be used to constrain their formation histories. We study the spectral indices of post-processed… read more here.

Keywords: post starburst; spectral indices; formation; star formation ... See more keywords
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SCORPIO - II. Spectral indices of weak Galactic radio sources

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Published in 2018 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/stx2445

Abstract: In the next few years the classification of radio sources observed by the large surveys will be a challenging problem, and spectral index is a powerful tool for addressing it. Here we present an algorithm… read more here.

Keywords: radio; spectral indices; indices weak; scorpio spectral ... See more keywords