Results 11 to 20 of about 168,541 (274)
Phase-sensitive interferometry of decorrelated speckle patterns [PDF]
Scientific Reports, 2019 Phase-sensitive coherent imaging exploits changes in the phases of backscattered light to observe tiny alterations of scattering structures or variations of the refractive index.
H. Spahr +6 more
semanticscholar +2 more sources
Convolutional neural network optimisation to enhance ESPI fringe visibility [PDF]
EPJ Web of Conferences, 2022 The use of convolutional neuronal networks (CNN) for the treatment of interferometric fringes has been introduced in recent years. In this paper, we optimize and build a CNN model, based U-NET architecture, to maximize its performance processing ...
Crespo J.M., Moreno V.
doaj +1 more source
Photonics, 2023 This study sought to explain the physical phenomenon that eludes the constraints of the Rayleigh criterion in the microstructure observation method using speckle interferometry, for which super-resolution has been experimentally proven; the study was ...
Yasuhiko Arai, Tong Chen
doaj +1 more source
Microshape Measurement Method Using Speckle Interferometry Based on Phase Analysis
Photonics, 2021 A method for the measurement of the shape of a fine structure beyond the diffraction limit based on speckle interferometry has been reported. In this paper, the mechanism for measuring the shape of the fine structure in speckle interferometry using ...
Yasuhiko Arai
doaj +1 more source
Biomedical Optics Express, 2023 Recently, speckle visibility spectroscopy (SVS) was non-invasively applied on the head to monitor cerebral blood flow. The technique, using a multi-pixel detecting device (e.g., camera), allows the detection of a larger number of speckles, increasing the
Simon Mahler +6 more
semanticscholar +1 more source
Optics Express, 2022 Speckle denoising can improve digital holographic interferometry phase measurements but may affect experimental accuracy. A deep-learning-based speckle denoising algorithm is developed using a conditional generative adversarial network.
Q. Fang +6 more
semanticscholar +1 more source
Deep Learning Network for Speckle De-Noising in Severe Conditions
Journal of Imaging, 2022 Digital holography is well adapted to measure any modifications related to any objects. The method refers to digital holographic interferometry where the phase change between two states of the object is of interest.
Marie Tahon +2 more
doaj +1 more source
SPECKLE INTERFEROMETRY AT SOAR IN 2014 [PDF]
The Astronomical Journal, 2015 Accepted for publication in Astronomical Journal. 18 pages, 4 figures. Full tables available at http://www.ctio.noao.edu/~atokovin/papers/SOAR2014_table2.txt and http://www.ctio.noao.edu/~atokovin/papers/SOAR2014_table3 ...
Andrei Tokovinin +4 more
openaire +5 more sources
Авіаційно-космічна техніка та технологія, 2021 The paper notes the wide possibilities and high efficiency of vibration diagnostics of parts and assemblies of power units by the method of electronic speckle interferometry (ESI), shows the feasibility of developing and improving methods for obtaining ...
Михаил Романович Ткач +5 more
doaj +1 more source
Speckle Interferometry at SOAR in 2019 [PDF]
The Astronomical Journal, 2020 Abstract The results of speckle-interferometric observations at the 4.1 m Southern Astrophysical Research Telescope in 2019 are given, totaling 2555 measurements of 1972 resolved pairs with separations from 15 mas (median 0.″21) and magnitude difference up to 6 mag, and non-resolutions of 684 targets.
Andrei Tokovinin +4 more
openaire +3 more sources