Results 31 to 40 of about 168,541 (274)
The use of laser dynamical speckle interferometry in the study of cellular processes
Journal of Biomedical Photonics & Engineering, 2016 A speckle interferometry setup is mounted, tested and approved that allows the analysis of intracellular processes with large optical magnification. For different part of the cell, the dependences of speckle image correlation coefficients upon time are ...
A. P. Vladimirov +4 more
doaj +1 more source
Comparison study of algorithms and accuracy in the wavelength scanning interferometry [PDF]
, 2012 Wavelength scanning interferometry (WSI) can be used for surface measurement with discontinuous surface profiles by producing phase shifts without any mechanical scanning process.
Gao, F. +4 more
core +1 more source
THERMAL DEFORMATION WAVES IN HETEROGENEOUS MATERIALS [PDF]
Journal of Engineering Science (Chişinău), 2018 In the paper, a stress-strain detection method is used by correlation point interferometry, inwhich the resolution of the recording surface changes has been significantly (ten times) improved. This result was obtained
V. Zhukovsky +3 more
doaj +1 more source
Optics Express, 2018 An optical system for measuring the coefficient of thermal expansion (CTE) of materials has been developed based on electronic speckle interferometry. In this system, the temperature can be varied from -60°C to 180°C with a Peltier device.
Chengzhi Dong +4 more
semanticscholar +1 more source
Digital Double-Pulse Holographic Interferometry for Vibration Analysis
Shock and Vibration, 1996 Different arrangements for double-pulsed holographic and speckle interferometry for vibration analysis will be described. Experimental results obtained with films (classical holographic interferometry) and CCD cameras (digital holographic interferometry)
H.J. Tiziani, G. Pedrini
doaj +1 more source
Speckle Interferometry of Red Dwarf Stars [PDF]
, 2018 We report high-resolution optical speckle observations of 336 M dwarfs, which results in 113 measurements of the relative position of 80 systems and 256 other stars with no indications of duplicity. These are the first measurements for two of the systems.
B. Mason +5 more
semanticscholar +1 more source
Highlights of Astronomy, 1989 Speckle interferometry is a technique which utilizes the full diffraction-limited imaging potential of ground-based telescopes. Short exposure images, or specklegrams, with an exposure time less than that of the atmospheric correlation time (~5- 50 ms) preserve the high-spatial frequency information lost in long exposure imaging.
openaire +1 more source
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
Computational de-noising based on deep learning for phase data in digital holographic interferometry
APL Photonics, 2020 This paper presents a deep-learning-based algorithm dedicated to the processing of speckle noise in phase measurements in digital holographic interferometry.
Silvio Montresor +3 more
doaj +1 more source
Nuclear Materials and Energy, 2021 The retroreflectors in EAST (Experimental Advanced Superconducting Tokamak) are important optical components of Polarimeter-Interferometer (POINT) system, working as the first mirrors to reflect the incident far-infrared laser.
Hongbei WANG +6 more
doaj +1 more source