Results 81 to 90 of about 930,547 (198)

Optical unmixing using programmable spectral source based on DMD

, 2022
Paper 98550P, 9 S.Traditional spectral unmixing involves intense signal processing applied on multispectral or hyperspectral data captured from an imaging device, which is highly time-consuming. In this article, a novel method, namely "optical unmixing",
Taphanel, M., Beyerer, Jürgen, Luo, D., Bauer, S., Puente Leon, F., Längle, Thomas   +5 more
core   +1 more source

Spectral weighted sparse unmixing based on adaptive total variation and low-rank constraints

Scientific Reports
Hyperspectral sparse unmixing, an image processing technique, leverages a spectral library enriched with endmember spectral information as a prerequisite.
Chenguang Xu
doaj   +1 more source

Preprocessing Algorithm Leveraging Geometric Modeling for Scale Correction in Hyperspectral Images for Improved Unmixing Performance

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Spectral variability significantly impacts the accuracy and convergence of hyperspectral unmixing algorithms. Many methods address complex spectral variability; yet large-scale distortions to the scale of the observed pixel signatures due to topography ...
Praveen Sumanasekara, Athulya Ratnayake, Buddhi Wijenayake, Keshawa Ratnayake, Roshan Godaliyadda, Parakrama Ekanayake, Vijitha Herath   +6 more
doaj   +1 more source

KPI‐NeRF: Hyperspectral Neural Radiance Fields from a Single Kaleidoscopic Plenoptic Image

Computer Graphics Forum, EarlyView.
KPI‐NeRF reconstructs hyperspectral light field images from a single kaleidoscopic plenoptic image. By leveraging neural radiance fields, it enables high‐quality spectral and angular de‐multiplexing for dynamic scene capture. Abstract Plenoptic imaging has excessive sampling requirements associated with the high dimensionality of the desired data.
Erqi Huang, John Restrepo, Xun Cao, Ivo Ihrke   +3 more
wiley   +1 more source

Ploidy‐Dependent Response to Anticancer Drugs of Human Embryonic Stem Cells

Cell Proliferation, EarlyView.
Using isogenic hESCs, differing only in their ploidy level, we show the effect of ploidy on the resistance to anticancer drugs. We demonstrate that polyploidy, by itself, confers sensitivity to chemotherapies, leading to higher apoptosis and delayed proliferation, while the loss of p53 reverses the phenotype, demonstrating higher resistance.
Guy Haim‐Abadi, Nissim Benvenisty
wiley   +1 more source

Lunar impact history recorded by melt beads from Apollo 17 regolith 76501

Meteoritics &Planetary Science, EarlyView.
Abstract Rapidly quenched particles of melt formed as ejecta from meteoritic impacts are ubiquitous in the lunar regolith. Isotopic and geochemical data for impact‐produced glassy particles from Apollo 17 regolith sample 76501 document their major and trace element compositions and U–Pb chronologies. Their U–Pb isotopic compositions are consistent with
Alexander A. Nemchin, Marc D. Norman, Martin J. Whitehouse, Evgenia Salin, Tao Long, Nicholas E. Timms, Xiaochao Che, Tao Luo   +7 more
wiley   +1 more source

A Comparison Between Linear and Non-Linear Spectral Unmixing Methods [PDF]

, 2023
Spectral unmixing is a key process in identifying the spectral signature of materials and quantifying their spatial distribution over an image. This paper aims to investigate linear and nonlinear methods used to solve spectral unmixing problems, the ...
Ahmed, Asmau Mukhtar
core  

Multiscale four‐dimensional imaging of cardiac remodelling after myocardial infarction

The Journal of Physiology, EarlyView.
Abstract figure legend Multiscale 4D imaging framework for integrated phenotyping of post‐infarction remodelling. Myocardial infarction triggers dynamic changes across mechanical, haemodynamic and biological axes, progressing from acute injury and inflammation to extracellular matrix remodelling and scar maturation.
Hanzhou Lei, Boris Martinac, Yang Guo
wiley   +1 more source

Hyperspectral Unmixing With Multi-Scale Convolution Attention Network

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Hyperspectral unmixing is to decompose the mixed pixel into the spectral signatures (endmembers) with their corresponding abundances. However, the ignorance of endmember variability in hyperspectral unmixing results in low performance.
Sheng Hu, Huali Li
doaj   +1 more source

Localized Quadratic RF Encoded Spin‐Echo With Spiral‐PRIME Reconstruction: A Practical Alternative to 3D FSE for High‐Resolution Volumetric Brain MRI

Magnetic Resonance in Medicine, Volume 96, Issue 6, Page 2615-2628, December 2026.
ABSTRACT Purpose To extend localized quadratic (LQ) RF encoded spin‐echo imaging with acquisition and reconstruction strategies that improve efficiency and artifact robustness, positioning it as a practical alternative to 3D FSE for high‐resolution volumetric brain MRI.
Guruprasad Krishnamoorthy, Julia V. Velikina, James G. Pipe   +2 more
wiley   +1 more source