Results 71 to 80 of about 6,322 (191)

Quantum-inspired computational imaging [PDF]

, 2018
Computational imaging combines measurement and computational methods with the aim of forming images even when the measurement conditions are weak, few in number, or highly indirect.
Altmann, Yoann, Faccio, Daniele, Goyal, Vivek K., Hero, Alfred O., McLaughlin, Stephen, Padgett, Miles J.   +5 more
core   +2 more sources

High‐resolution deuterium metabolic imaging of the human brain at 9.4 T using phase‐cycled balanced SSFP spectral–spatial acquisitions

Magnetic Resonance in Medicine, Volume 95, Issue 3, Page 1304-1322, March 2026.
Abstract Purpose The aim was to improve the sensitivity and robustness against B0 inhomogeneities of deuterium metabolic imaging (DMI) using phase‐cycled balanced SSFP (bSSFP) methods at 9.4 T. Methods We investigated two variants of phase‐cycled bSSFP acquisitions, namely uniformly weighted multi‐echo and acquisition‐weighted chemical shift imaging ...
Praveen Iyyappan Valsala, Rolf Pohmann, Rahel Heule, Georgiy A. Solomakha, Nikolai I. Avdievich, Jörn Engelmann, Laura Kuebler, André F. Martins, Klaus Scheffler   +8 more
wiley   +1 more source

Spatial Resolution Enhancement of Hyperspectral Images Using Spectral Unmixing and Bayesian Sparse Representation

Remote Sensing, 2017
In this paper, a new method is presented for spatial resolution enhancement of hyperspectral images (HSI) using spectral unmixing and a Bayesian sparse representation.
Elham Kordi Ghasrodashti, Azam Karami, Rob Heylen, Paul Scheunders   +3 more
doaj   +1 more source

Unmixing of Hyperspectral Data Using Spectral Libraries

International Journal of Environment and Geoinformatics, 2020
In hyperspectral images, pixels are found as a mixture of the spectral signatures of several materials, especially when there is an insufficient spatial resolution.
Sefa Küçük, Seniha Esen Yüksel
doaj   +1 more source

Hyperspectral Detection and Unmixing of Subpixel Target Using Iterative Constrained Sparse Representation

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
With great significance in military and civilian applications, subpixel target detection is of great interest in hyperspectral remote sensing. The subpixel targets usually also need to be unmixed to identify their components.
Qiang Ling, Kun Li, Zhaoxu Li, Zaiping Lin, Jiawen Wang   +4 more
doaj   +1 more source

Nonlinear unmixing of hyperspectral images using a semiparametric model and spatial regularization

, 2013
Incorporating spatial information into hyperspectral unmixing procedures has been shown to have positive effects, due to the inherent spatial-spectral duality in hyperspectral scenes.
Chen, Jie, Hero III, Alfred O., Richard, Cédric   +2 more
core   +1 more source

Mineralogical Classification of CRISM Hyperspectral Data Under Uncertainty With Hybrid Neural Networks

Journal of Geophysical Research: Planets, Volume 131, Issue 3, March 2026.
Abstract Orbital remote sensing observations are a lynchpin of planetary science research. Hyperspectral infrared spectroscopy in particular is key for planetary mineralogical exploration, for example, CRISM for Mars, as this underpins our understanding of the distribution of specific lithologies and the geological process leading to their formation ...
Robert Platt, Rossella Arcucci, Cédric M. John   +2 more
wiley   +1 more source

A New Fast Sparse Unmixing Algorithm Based on Adaptive Spectral Library Pruning and Nesterov Optimization

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
In recent years, hyperspectral sparse unmixing (HSU) has garnered extensive research and attention due to its unique characteristic of not requiring the estimation of endmembers and their number.
Kewen Qu, Fangzhou Luo, Huiyang Wang, Wenxing Bao   +3 more
doaj   +1 more source

Dynamical spectral unmixing of multitemporal hyperspectral images

, 2015
In this paper, we consider the problem of unmixing a time series of hyperspectral images. We propose a dynamical model based on linear mixing processes at each time instant.
Chanussot, Jocelyn, Henrot, Simon, Jutten, Christian   +2 more
core   +3 more sources

Single Piezometric Stress Preserved in Strained Feldspar and Quartz From Intracontinental Lower Crust

Tectonics, Volume 45, Issue 3, March 2026.
Abstract The strength of the intracontinental lower crust exerts a primary control on regional‐scale deformation during continent‐continent collision. Because of the nominally anhydrous nature of much of the intracontinental lower crust, it is generally considered to be more viscous than lower crust in hydrated tectonic margins.
A. Osinchuk, B. V. Dyck, D. Wallis, A. Camacho   +3 more
wiley   +1 more source