Results 21 to 30 of about 5,334,894 (402)
Isotropically Polarized Speckle Patterns [PDF]
Physical Review Letters, 2015 5 pages, 3 ...
Mikolaj K. Schmidt +8 more
openaire +5 more sources
Applied Sciences, 2020 This paper presents a new processing method for denoising interferograms obtained by digital holographic speckle pattern interferometry (DHSPI) to serve in the structural diagnosis of artworks.
K. Yan +4 more
semanticscholar +1 more source
Three-Dimensional Continuous Displacement Measurement with Temporal Speckle Pattern Interferometry. [PDF]
Sensors (Basel), 2016 A speckle interferometer which can measure whole field three-dimensional displacements continuously and dynamically has been built. Three different wavelength lasers are used to produce the speckle interferograms of the two in-plane displacements ...
Qin J, Gao Z, Wang X, Yang S.
europepmc +2 more sources
Improvements of Computational Ghost Imaging by Using Sequenced Speckle
Applied Sciences, 2023 This study presents a computational ghost imaging (GI) scheme that utilizes sequenced random speckle pattern illumination. The primary objective is to develop a speckle pattern/sequence that improves computational time without compromising image quality.
Sukyoon Oh +3 more
doaj +1 more source
Semi‐supervised classification of fundus images combined with CNN and GCN
Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022 Abstract Purpose Diabetic retinopathy (DR) is one of the most serious complications of diabetes, which is a kind of fundus lesion with specific changes. Early diagnosis of DR can effectively reduce the visual damage caused by DR. Due to the variety and different morphology of DR lesions, automatic classification of fundus images in mass screening can ...
Sixu Duan +8 more
wiley +1 more source
Tailoring 3D Speckle Statistics [PDF]
, 2022 We experimentally generate three-dimensional speckles with customized intensity statistics. By modulating the phase front of a laser beam, far-field speckle patterns maintain the designed intensity probability density function while evolving to different spatial patterns upon axial propagation. We also create speckles with distinct intensity statistics
arxiv +1 more source
Hidden statistics in speckle patterns [PDF]
Photoniques, 2021 Scattering of coherent light from a disordered material produces a complex distribution of intensity known as a speckle pattern. Speckle patterns are not as random as they appear at first glance. Their statistical properties exhibit universal features, as already recognized in the first paper on laser speckle.
openaire +3 more sources
Effect of the Speckle Size on the Quality of Speckle Pattern in DSPI System
IEEE Access, 2019 In order to detect the deformation and strain of materials accurately, the key is to obtain the phase information caused by dynamic loading in digital speckle pattern interferometry (DSPI).
Zhisong Li +5 more
doaj +1 more source
Shear wave arrival time estimates correlate with local speckle pattern. [PDF]
IEEE Trans Ultrason Ferroelectr Freq Control, 2015 Mcaleavey SA, Osapoetra LO, Langdon J.
europepmc +2 more sources
Investigation of speckle pattern dynamics by laser speckle contrast imaging [PDF]
Biophotonics: Photonic Solutions for Better Health Care VI, 2018 Laser speckle contrast imaging (LSCI) is a simple and quite powerful method for visualization of flow, microcirculation and perfusion. In current study the speckle contrast variations towards breaking ergodicity conditions are considered with a final aim of envision a practical approach allowing real-time imaging of variations in dynamic properties of ...
Sdobnov, A. (Anton) +4 more
openaire +3 more sources