Results 131 to 140 of about 1,115,656 (243)
Defeating Speckle Noise In Faint Companion Imaging
, 2007 Speckle noise vastly dominates shot noise in the halo of the AO-compensated image of a bright star and limits the detection of faint, close companions. We present an observing technique which eliminates speckle noise and we illustrate the gain achieved ...
René Racine +3 more
core
Advanced Science, EarlyView.Vision begins not with images but with change: the retina fires only when something moves, handing the brain a stream of spikes. A neuromorphic imaging system adopts the same strategy—an event sensor that sees like the retina, a spiking network that thinks like the brain—to track and reconstruct fully randomly moving targets through tissue (phantom ...
Ning Zhang, Arto Nurmikko
wiley +1 more source
Reduction of speckle noise by using an adaptive window [PDF]
, 2014 Speckle noise is a multiplicative noise that results from random fluctuations of signals when they are reflected on a surface. This research article proposes a techniqueto reduce speckle noise by using classic statistical filters and a size ...
Quiñones, Jorge, Prieto, Flavio
core
Inverse Design of Pre‐Strain via a Predictive Electromechanical Model for Enhanced Strain Sensing
Advanced Science, EarlyView.An analytical electromechanical model rooted in microcrack evolution mechanics is globally calibrated from only eight pre‐strain datasets, enabling prediction of the complete sensing response at untested pre‐strain values within the calibrated design space (R2 > 0.99).
Jia‐Chen Shang +10 more
wiley +1 more source
Riduzione dello speckle noise con specchi deformabili [PDF]
, 2011 Lo Speckle Noise è un pattern che sorge quando la luce monocromatica viene distribuita su una superficie ruvida e, diffusa in direzioni casuali, viene acquisita da un rilevatore con apertura finita.
Castellaro , Chiara
core
Advanced Science, EarlyView.STWave transforms massive microscopic‐resolution spatial transcriptomics into interpretable fine‐scale tissue maps through patch‐wise inference, wavelet‐based multi‐scale encoding, and dual‐domain reconstruction. It reduces noise while preserving weak spatial signals, enabling efficient analysis of 6 40 000 spots of 2.47 GB GPU memory and revealing ...
Tao Jiang +9 more
wiley +1 more source
Artificial Intelligence‐Empowered Single‐Cell Phenotyping for Rapid, Automated Pathogen Diagnostics
Advanced Science, EarlyView.This work presents an integrated diagnostic platform that combines microfluidic single‐cell bacterial detection with artificial intelligence‐driven analysis for rapid antimicrobial susceptibility testing. Single‐cell phenotyping enables assessment of antibiotic response in only a few cell replication cycles, while AI analysis supports precise bacterial
Sabita Khadka +3 more
wiley +1 more source
Three-dimensional curvelet-based dictionary learning for speckle noise removal of optical coherence tomography. [PDF]
Biomed Opt Express, 2020 Esmaeili M +3 more
europepmc +1 more source
Advanced Science, EarlyView.A flexible, hexagonally packed artificial dielectric providing a wide range of effective permittivities (εr ≈ 30–1400) without lumped elements was developed for clinical and ultra‐high‐field MRI. Combined with modular passive‐dipole arrays, the system enables adaptable RF field shaping through electric‐ and magnetic‐dipole tuning.
Santosh Kumar Maurya +2 more
wiley +1 more source
Advanced Science, EarlyView.Low‐dose electron holography is limited by shot noise, which buries weak phase signals. HoloDenoiser, a physics‐informed network that works simultaneously in the spatial and frequency domains, locates and protects the holographic sideband while suppressing noise in the hologram.
Ye Luo +10 more
wiley +1 more source