Results 111 to 120 of about 3,337,138 (296)

Physical pupil manipulation for speckle reduction in digital holographic microscopy. [PDF]

Heliyon, 2021
Buitrago-Duque C, Garcia-Sucerquia J.
europepmc   +1 more source

Superoscillation in speckle patterns [PDF]

, 2008
Waves are superoscillatory where their local phase gradient exceeds the maximum wavenumber in their Fourier spectrum. We consider the superoscillatory area fraction of random optical speckle patterns.
Hamilton, AC, Dennis, MR, Courtial, J., Alasdair C Hamilton, Dennis, M.R., Mark R Dennis, Johannes Courtial, Dennis, Mark R.; id_orcid, Courtial, J, Hamilton, A., Courtial, Johannes, Hamilton, Alasdair C.   +11 more
core   +1 more source

Wearable Smart Patches on Sustainable Chitosan With Reversible Microbial Growth‐Inhibitory Properties

Advanced Functional Materials, EarlyView.
ABSTRACT Chitosan, a polysaccharide upcycled from biowaste, has long promised sustainable, biocompatible, and antimicrobial films and devices, an appeal reinforced by its recent regulatory recognition, with several chitosan‐based antibacterial dressings gaining clearance through the Food and Drug Administration's 510(k) pathway.
Jacopo Nicoletti, Kubra Kocak, Andrea Michel, Enrico Cavarzerani, Ali Raza, Petr Rohzin, Nouha Loudhaief, Saimir Frroku, Nicolò Baldovin, Hazrat Bilal, Alvise Perosa, Maurizio Selva, Flavio Rizzolio, Luca Sbuelz, Sabrina Tamburini, Domenico De Fazio, Giovanni Antonio Salvatore   +16 more
wiley   +1 more source

Efficient Speckle Noise Filtering of SAR Images [PDF]

Journal of Astronomy and Space Sciences, 1998
Any classification process using SAR images presupposes the reduction of multiplicative speckle noise, since the variations caused by speckle make it extremely difficult to distinguish between neighboring classes within the feature space.
Byoungsoo Kim, Kyu-Hong Choi, Joong-Sun Won   +2 more
doaj  

Regulated Ion‐Diffusion Hydrogels for Subtle and Multimodal Temperature‐Strain Sensing in Wound Monitoring

Advanced Functional Materials, EarlyView.
A soft, dual‐channel hydrogel patch enables simultaneous detection of wound temperature and strain by integrating ion‐diffusion‐mediated thermoelectric and resistive sensing. The conformal design maintains stable performance during motion, capturing subtle inflammatory and mechanical changes for continuous wound monitoring.
Yu Fang, Xinglong Pan, Zhiwei Li, Wanheng Lu, Chang Liu, Yi Zhou, Guo Tian, Ghim Wei Ho   +7 more
wiley   +1 more source

Semi-supervised Video Synthetic Aperture Radar Shadow Tracking Based on Physics-aware Spectral Spatial Attention and Kinematic Constraints

Leida xuebao
Moving target shadow tracking in Video Synthetic Aperture Radar (Video SAR) faces significant challenges, including strong speckle noise interference, substantial nonrigid target deformation, and a scarcity of supervised training samples.
Senhao GAO, Xiaqing YANG, Jun SHI, Guolong CUI, Junjie WU   +4 more
doaj   +1 more source

Robust three-dimensional registration on optical coherence tomography angiography for speckle reduction and visualization. [PDF]

Quant Imaging Med Surg, 2021
Cheng Y, Chu Z, Wang RK.
europepmc   +1 more source

X-ray Multimodal Intrinsic-Speckle-Tracking

, 2019
We develop X-ray Multi-modal Intrinsic-Speckle-Tracking (MIST), a form of X-ray speckle-tracking that is able to recover both the position-dependent phase shift and the position-dependent small-angle X-ray scattering (SAXS) signal of a phase object. MIST
Sebastien Berujon (11379234), Konstantin M. Pavlov (14566790), Hélène Rougé-Labriet (17512638), David M. Paganin (14357133), Heyang Li (6501410), Emmanuel Brun (677931)   +5 more
core   +1 more source

Biodegradable and Biocompatible Functional Polymers for Biomedical Applications

Advanced Functional Materials, EarlyView.
Biodegradable and biocompatible functional polymers integrate electrical, mechanical, and stimuli‐responsive functionalities while enabling programmed degradation under physiological conditions. This review introduces recent advances in conductive, shape‐memory, self‐healing, photocurable, and adhesive polymer systems, emphasizing material design ...
Won Bae Han, Shuvra Mondal, Sungkeun Han, Chan‐Hwi Eom, Venkata Ramesh Naganaboina, Suk‐Won Hwang   +5 more
wiley   +1 more source

Investigation of methods for speckle contrast reduction [PDF]

, 2010
Speckle arises when coherent light is reflected from a rough screen and observed by an intensity detector with a finite aperture. Because speckle causes serious image degradation when lasers are used as light sources in e.g.
Welde, Kristine
core   +1 more source