Results 91 to 100 of about 5,296,113 (405)
Speckle Temporal Stability in eXtreme Adaptive Optics Coronagraphic Images [PDF]
, 2012 The major noise source limiting high-contrast imaging is due to the presence of quasi-static speckles. Speckle noise originates from wavefront errors caused by various independent sources, and it evolves on different timescales pending to their nature.
arxiv +1 more source
Machine learning meets Singular Optics: Speckle-based Structured light demultiplexing [PDF]
arXiv, 2023 In this paper, the advancements in structured light beams recognition using speckle-based convolutional neural networks (CNNs) have been presented. Speckle fields, generated by the interference of multiple wavefronts diffracted and scattered through a diffuser, project a random distribution.
arxiv
Establishment and biological characterization of radioresistant colorectal cancer cell lines
FEBS Open Bio, EarlyView.Under ionizing radiation exposure, radiation‐sensitive cancer cells exhibit oxidative stress and DNA damage, while radiation‐resistant cancer cells exhibit strong antioxidant properties and DNA damage repair. Radiotherapy resistance is a major cause of recurrence and metastasis in colorectal cancer (CRC).
Tian‐Yin Qu +10 more
wiley +1 more source
FEBS Open Bio, EarlyView.ZNF469 regulates the expression of genes encoding extracellular matrix proteins. Endogenous ZNF469 is predominantly cytoplasmic, while in transfected cells, it forms aggregates reminiscent of biomolecular condensates, located mainly in the nucleus. These condensates exhibit overlapping staining with proteasomes and are also associated with the mitotic ...
Anne Elisabeth Christensen Mellgren +8 more
wiley +1 more source
Tracking the rotation of a birefringent crystal from speckle shift measurement [PDF]
, 2020 The random intensity distribution observed due to the propagation of a coherent beam of light through a scattering medium is known as a speckle pattern. The interaction of the speckles with a birefringent crystal, here, YVO4 results in the e-ray and o-ray speckles.
arxiv +1 more source
Objective speckle displacement: an extended theory for the small deformation of shaped objects [PDF]
, 2014 This paper describes an extended and improved theory of the displacement of the objective speckle pattern resulting from displacement and/or deformation of a coherently illuminated diffuse object. Using the theory developed by Yamaguchi [Opt.
Charrett, Thomas O. H., Tatam, Ralph P.
core +1 more source
Journal of Biomedical Optics, 2015 . Feasibility of speckle tracking in optical coherence tomography (OCT) based on digital image correlation (DIC) is discussed in the context of elastography problems. Specifics of applying DIC methods to OCT, compared to processing of photographic images
V. Zaitsev +5 more
semanticscholar +1 more source
Spatial statistics of superposition of two uncorrelated speckle patterns with polarization diversity
Results in Optics, 2021 A detailed theoretical and experimental study on the effect of the superposition of uncorrelated speckle patterns with polarization diversity on the spatial statistics of the superposed speckle pattern is presented.
Abhijit Roy
doaj
Investigation of the speckle pattern effect for displacement assessments by DIC [PDF]
Journal of Intelligent Manufacturing and Special EquipmentPurpose – This study aims to investigate the effect of speckle pattern on displacement measurements using different speckle diameters and coverage ratios.
Salim Caliskan, Hakan Akyuz
doaj +1 more source
Sensors, 2021 In this study, a compound speckle interferometer for measuring three-degree-of-freedom (3-DOF) displacement is proposed. The system, which combines heterodyne interferometry, speckle interferometry and beam splitting techniques, can perform precision 3 ...
Hung-Lin Hsieh, Bo-Yen Sun
doaj +1 more source