Results 11 to 20 of about 5,334,894 (402)
Evaluation of pitting corrosion by dynamic speckle pattern analysis. [PDF]
Sci Rep, 2023 There is an increasing interest in non-destructive and real-time high-resolution approaches for corrosion studies in metals. In this paper, we propose the dynamic speckle pattern method as a low-cost, easy-to-implement, and quasi in-situ optical ...
Pedram O +7 more
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Acousto-electrical speckle pattern in Lorentz force electrical impedance tomography [PDF]
Physics in Medicine and Biology, 2015 Ultrasound speckle is a granular texture pattern appearing in ultrasound imaging. It can be used to distinguish tissues and identify pathologies. Lorentz force electrical impedance tomography is an ultrasound-based medical imaging technique of the tissue
Catheline, Stefan +7 more
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Statistical model for speckle pattern optimization
Optics Express, 2017 Image registration is the key technique of optical metrologies such as digital image correlation (DIC), particle image velocimetry (PIV), and speckle metrology. Its performance depends critically on the quality of image pattern, and thus pattern optimization attracts extensive attention. In this article, a statistical model is built to optimize speckle
Yong Su, Qingchuan Zhang, Zeren Gao
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Methods for Determination of Mean Speckle Size in Simulated Speckle Pattern
Measurement Science Review, 2014 This paper deals with computation of mean speckle size in a speckle pattern generated through a numerical simulation of speckle after reflection of a Gaussian beam off a rough object’s surface. Within this simulation various speckle patterns are obtained
Hamarová I. +3 more
doaj +2 more sources
A model for simulating speckle-pattern evolution based on close to reality procedures used in spectral-domain OCT [PDF]
, 2014 A robust model for simulating speckle pattern evolution in optical coherence tomography (OCT) depending on the OCT system parameters and tissue deformation is reported.
Gelikonov, G. V. +4 more
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Space division multiplexing in standard multi-mode optical fibers based on speckle pattern classification. [PDF]
Sci Rep, 2019 In optical communications the transmission bandwidth of single mode optical fibers is almost fully exploited. To further increase the capacity of a telecommunication link, multiplexing techniques can be applied across 5 physical dimensions: amplitude ...
Pauwels J +2 more
europepmc +2 more sources
Sensors, 2021 The laser speckle correlation method has found widespread application for obtaining information from vibrating objects. However, the resolution and accuracy of the laser speckle correlation method as they relate to the defocusing degree have not been ...
Wenxin Hu +4 more
doaj +1 more source
Image-Enhanced Pseudo-Thermal Ghost Imaging with Hybrid Speckle Pattern
Photonics, 2023 In this study, the influence of hybrid speckle patterns on the contrast-to-noise ratio (CNR) and resolution in pseudo-thermal ghost imaging (PGI) was examined based on the object dimensions in the macroscopic and microscopic regimes.
Tong Tian +3 more
doaj +1 more source
Компьютерная оптика, 2021 A process of mode matching in a chaotic speckle pattern without a reference beam responsible for the formation of a holographic grating was studied experimentally and theoretically.
A.V. Volyar +3 more
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Superoscillation in speckle patterns [PDF]
Optics Letters, 2008 3 pages, two figures, Optics Letters ...
Dennis, M.R., Hamilton, A., Courtial, J.
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