Results 31 to 40 of about 153,264 (305)
Augmented GBM Nonlinear Model to Address Spectral Variability for Hyperspectral Unmixing
Remote Sensing, 2023 Spectral unmixing (SU) is a significant preprocessing task for handling hyperspectral images (HSI), but its process is affected by nonlinearity and spectral variability (SV). Currently, SV is considered within the framework of linear mixing models (LMM),
Linghong Meng +5 more
doaj +1 more source
Variability and spectral variation of 3C 66A [PDF]
Astrophysics and Space Science, 2011 3C 66A was monitored by the BATC(Beijing-Arizona-Taipei-Connecticut) telescope from 2005 to 2008,1994 observations were obtained on 89 nights. Detailed research and analysis was performed on these observations in this paper. A long term burst occurred in the whole light curve.
Hu, Shao Ming +5 more
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Reducing the impacts of intra-class spectral variability on the accuracy of soft classification and super-resolution mapping of shoreline [PDF]
, 2019 The main objective of this research is to assess the impact of intra-class spectral variation on the accuracy of soft classification and super-resolution mapping.
Doan, Huong T.X. +2 more
core +2 more sources
Spectral Simplicity and Asymptotic Separation of Variables [PDF]
Communications in Mathematical Physics, 2011 We describe a method for comparing the real analytic eigenbranches of two families of quadratic forms that degenerate as t tends to zero. One of the families is assumed to be amenable to `separation of variables' and the other one not. With certain additional assumptions, we show that if the families are asymptotic at first order as t tends to 0, then ...
Hillairet, Luc, Judge, Chris
openaire +5 more sources
Estimating the irradiance spectrum from measurements in a limited number of spectral bands [PDF]
, 2006 Accurate measurement and characterisation of fluctuations in the irradiance environment is important for many areas of optical remote sensing. This paper describes a method of estimating spectral irradiance over the region 400 – 1000 nm from the radiance
Milton, E.J., Rollin, E.M.
core +1 more source
Remote Sensing, 2023 Genetic variation among populations within plant species can have huge impact on canopy biochemistry and structure across broad spatial scales. Since canopy spectral reflectance is determined largely by canopy biochemistry and structure, spectral ...
Jingxue Zhang +9 more
doaj +1 more source
New spectral functions of the near-ground albedo derived from aircraft diffraction spectrometer observations [PDF]
, 2014 The airborne spectral observations of the upward and downward irradiances are revisited to investigate the dependence of the near-ground albedo as a function of wavelength in the entire solar spectrum for different surfaces (sand, water, snow) and under ...
C. A. Varotsos +9 more
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Editorial for Special Issue “Hyperspectral Imaging and Applications”
Remote Sensing, 2019 Due to advent of sensor technology, hyperspectral imaging has become an emerging technology in remote sensing. Many problems, which cannot be resolved by multispectral imaging, can now be solved by hyperspectral imaging.
Chein-I Chang +3 more
doaj +1 more source
REMARKABLE SPECTRAL VARIABILITY OF PDS 456 [PDF]
The Astrophysical Journal, 2010 We report on the highest to date signal-to-noise-ratio X-ray spectrum of the luminous quasar PDS 456, as obtained during two XMM-Newton orbits in September 2007. The present spectrum is considerably different from several previous X-ray spectra recorded for PDS 456 since 1998.
Behar, E +5 more
openaire +3 more sources
Remote Sensing, 2023 In hyperspectral unmixing (HU), spectral variability in hyperspectral images (HSIs) is a major challenge which has received a lot of attention over the last few years.
Burkni Palsson +2 more
doaj +1 more source