Results 61 to 70 of about 5,296,113 (405)
Multiple-Input Single-Output Ghost Imaging
IEEE Photonics Journal, 2020 In this paper, we propose a multiple-input single-output ghost imaging scheme, named MISO-GI. In the scheme, K spatiotemporal speckle pattern sources (multiple input) simultaneously generate K different spatiotemporal modulated speckle patterns which ...
Le Wang, Shengmei Zhao
doaj +1 more source
Singularities in Speckled Speckle [PDF]
, 2007 Speckle patterns produced by random optical fields with two (or more) widely different correlation lengths exhibit speckle spots that are themselves highly speckled. Using computer simulations and analytic theory we present results for the point singularities of speckled speckle fields: optical vortices in scalar (one polarization component) fields; C ...
arxiv +1 more source
Speckle-based determination of the polarisation state of single and multiple laser beams [PDF]
, 2020 Funding: Leverhulme Trust (RPG-2017-197); UK Engineering and Physical Sciences Research Council (EP/P030017/1).Laser speckle is generated by the multiple interference of light through a disordered medium.
Bruce, Graham David +2 more
core +2 more sources
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
Pol Grasland-Mongrain +7 more
semanticscholar +1 more source
METHODS FOR ASSESSING THE STATE OF MICROHEMOCIRCULATION OF BIOTISSUE BY SPECKLE-STRUCTURE OF MULTIPLE SCATTERED RADIATION [PDF]
Journal of Engineering Science (Chişinău), 2018 The characteristics of microcirculation of blood in human tissues were investigated by recording and analyzing a dynamic speckle pattern.
N. Abramovich +4 more
doaj +1 more source
IEEE Sensors Journal, 2017 Structural health monitoring (SHM) is a key factor for the correct operation in large dimension structures. In this paper, we propose and demonstrate the application of a distributed optical sensor, suitable for SHM, based on the evaluation of the ...
F. M. Reis +4 more
semanticscholar +1 more source
Twisted speckle entities inside wavefront reversal mirrors
, 2009 The previously unknown property of the optical speckle pattern reported. The interference of a speckle with an oppositely moving phase-conjugated speckle wave produces a randomly distributed ensemble of a twisted entities (ropes) surrounding optical ...
A. Yu Okulov +6 more
core +1 more source
Novel Patterning Techniques to Improve Digital Image Correlation in Challenging Environments [PDF]
, 2022 A camera-based measurement technique called digital image correlation (DIC) is beneficial to measure displacement and strain in challenging environments (such as post-irradiation evaluation and high temperature environments) due to its non-contacting ...
Craig, Weston
core +1 more source
Polymer Testing, 2023 Digital image correlation (DIC) in combination with Scanning Electron Microscopy (SEM) and in-situ mechanical testing has great potential to study the micro-mechanical behavior of materials.
Olivier Verschatse +3 more
doaj
Novel 3D measurement system based on speckle and fringe pattern projection
Optics Express, 2016 An efficient three-dimensional shape measurement system is proposed, which is based on the combining projection of single digital speckle pattern and phase-shifting fringe patterns.
Shaoyan Gai, Feipeng Da, Xianqiang Dai
openalex +2 more sources