Results 11 to 20 of about 2,120,250 (297)
Hyperspectral and Multispectral Image Fusion with Automated Extraction of Image-Based Endmember Bundles and Sparsity-Based Unmixing to Deal with Spectral Variability [PDF]
Sensors, 2023 The aim of fusing hyperspectral and multispectral images is to overcome the limitation of remote sensing hyperspectral sensors by improving their spatial resolutions.
Salah Eddine Brezini, Yannick Deville
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Remote Sensing, 2017 Variable environmental conditions cause different spectral responses of scene endmembers. Ignoring these variations affects the accuracy of fractional abundances obtained from linear spectral unmixing. On the other hand, the correlation between the bands
Omid Ghaffari +2 more
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Remote Sensing, 2023 In hyperspectral unmixing, dealing with nonlinear mixing effects and spectral variability (SV) is a significant challenge. Traditional linear unmixing can be seriously deteriorated by the coupled residuals of nonlinearity and SV in remote sensing ...
Zhangqiang Yin, Bin Yang
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Remote Sensing, 2021 With the improvement of spatial resolution of hyperspectral remote sensing images, the influence of spectral variability is gradually appearing in hyperspectral unmixing.
Chuanlong Ye +5 more
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Spectral Variability of FSRQs [PDF]
Journal of Astrophysics and Astronomy, 2011 The optical variability of 29 flat spectrum radio quasars in SDSS Stripe 82 region are investigated by using DR7 released multi-epoch data. All FSRQs show variations with overall amplitude ranging from 0.24 mag to 3.46 mag in different sources. About half of FSRQs show a bluer-when-brighter trend, which is commonly observed for blazars.
Minfeng Gu, Y. L. Ai
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Variability of spectral tristimulus values
Journal of Research of the National Bureau of Standards Section A: Physics and Chemistry, 1961 As the spectral tristimulus values of the CIE Standard Observer System for Colorimetry are measurable quantities, their variabilities should be known. This paper describes a procedure for deriving "within" and "between" variances and covariances in the spectral tristimulus values, based on color-matching data for individual observers.
Nimeroff, Isadore +2 more
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Spectral Variability in Radio-Loud Quasars [PDF]
Journal of Astrophysics and Astronomy, 2014 5 pages, 3 figures, accepted to JApA, conference proceeding paper for Variability of Blazars - From Jansky to Fermi (VBJF), Dec.
Gu, Minfeng
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Modern spectral analysis in HF radar remote sensing. [PDF]
, 1998 High-Frequency (HF) radar systems are currently used to collect wave data. By applying spectral analysis methods, such as the Fast Fourier Transform (FFT) method, to the radar backscatter from the ocean surface, the so-called Doppler spectrum is ...
Vizinho, A., Vizinho, A
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Identify Informative Bands for Hyperspectral Target Detection Using the Third-Order Statistic
Remote Sensing, 2021 Constrained energy minimization (CEM) has been proposed and widely researched in the field of hyperspectral target detection. Generally, it selects one of the target spectra as the representative and then keeps its output constant while minimizing the ...
Xiurui Geng, Lei Wang, Luyan Ji
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Spectral Line Depth Variability in Radial Velocity Spectra [PDF]
, 2022 Stellar active regions, including spots and faculae, can create radial velocity (RV) signals that interfere with the detection and mass measurements of low mass exoplanets.
Plavchan, Peter +5 more
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