نتایج جستجو برای: nir reflectance

تعداد نتایج: 28172  

2010
Kenta Obata Hiroki Yoshioka

Fraction of vegetation cover (FVC) retrieved from remotely sensed reflectance spectra serves as a useful measure of land cover change. Since its retrieval algorithms show variations in assumptions of reflectance models and conditions imposed on the modeled spectra, the retrieved values also show some variations among the algorithms. This study discusses relationships among the FVC retrieval alg...

Journal: :Remote Sensing 2021

Water availability for vegetation use has been associated with the relative amount of water in plant and is a key factor modeling variables related to soil-plant system (e.g., net primary production, drought effects on vegetation). To best our knowledge, integration spectral proxies content (near-infrared (NIR), shortwave-infrared (SWIR) bands) land surface temperature (LST) estimation, not onl...

2012
Jean Gonzalez Manuela Roman Michael Hall Anuradha Godavarty

Hand-held near-infrared (NIR) optical imagers are developed by various researchers towards non-invasive clinical breast imaging. Unlike these existing imagers that can perform only reflectance imaging, a generation-2 (Gen-2) hand-held optical imager has been recently developed to perform both reflectance and transillumination imaging. The unique forked design of the hand-held probe head(s) allo...

2003
Y. Ueda M. Miyamoto T. Mikouchi T. Hiroi

Introduction: Recent years, many researchers have been observing a lot of asteroid reflectance spectra in the UV, visible to NIR at wavelength region [e.g., 1-4]. Reflectance spectroscopy of asteroid at this range should bring us a lot of information about its surface materials. Pyroxene and olivine have characteristic absorption bands in this wavelength range. Low-Ca pyroxene has two absorptio...

Journal: :Materials research express 2022

Abstract The main idea of the research is to formulate alkyd based smart coatings with high NIR-reflectance decrease cooling load in order maintain cool comfort buildings. In addition NIR reflectance studies, physical characteristics coating such as glossiness, hiding power, spreading area, volatile organic contents are evaluated. Heat reflective prepared by ball milling technique utilizing whi...

2017
R. Richter

The automatic correction of atmospheric effects currently requires visible to short-wave spectral bands (400–2500nm) to derive high accuracy surface reflectance data. Common techniques employ spectral correlations of dark targets in the short-wave infrared (SWIR, around 2.2 mm), blue (480 nm) and red (660 nm) regions to derive the aerosol optical depth. A large number of current Earth-observing...

Journal: :Investigative ophthalmology & visual science 2017
Maximilian Pfau Lukas Goerdt Steffen Schmitz-Valckenberg Matthias M Mauschitz Divyansh K Mishra Frank G Holz Moritz Lindner Monika Fleckenstein

Purpose To compare the intermodality and interreader agreement for geographic atrophy (GA) lesion size quantification in green-light fundus autofluorescence (GAF; excitation = 518 nm) versus combined blue-light fundus autofluorescence (BAF; excitation = 488 nm) and near-infrared reflectance (NIR; 820 nm) -based grading. Methods Confocal scanning laser ophthalmoscopy (cSLO) GAF, BAF, and NIR i...

Journal: :Animal : an international journal of animal bioscience 2011
N Prieto D W Ross E A Navajas R I Richardson J J Hyslop G Simm R Roehe

The objective of this study was to examine the online use of near infrared reflectance (NIR) spectroscopy to estimate the concentration of individual and groups of fatty acids (FA) as well as intramuscular fat (IMF) in crossbred Aberdeen Angus (AA×) and Limousin (LIM×) cattle. This was achieved by direct application of a fibre-optic probe to the muscle immediately after exposing the meat surfac...

Journal: :European Physical Journal Plus 2021

The present work introduces the preliminary outcome of one tasks inside MOBARTECH project, that is creation prototype for a compact FORS spectrophotometer capable automatically identifying pigments and dyes. On road toward this goal, we focused on automation pigment identification, as aspect great interest which would allow real time analysis with benefit especially unskilled operators. In pape...

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