Results 21 to 30 of about 16,467 (243)

Digital Double-Pulse Holographic Interferometry for Vibration Analysis

open access: yesShock 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

Digital holografic interferometry used for identification of 2D temperature field

open access: yesEPJ Web of Conferences, 2012
The presented paper shows the possibility of digital holographic interferometry application in measurement of unsteady 2D temperature field generated by pulsatile flow which is impinging heated surface.
Psota Pavel   +3 more
doaj   +1 more source

Incoherent Digital Holography for Multidimensional Motion Picture Imaging

open access: yesEngineering Proceedings, 2023
Incoherent digital holography (IDH) is a technique used to obtain a three-dimensional (3D) image of spatially incoherent light diffracted from an object as an incoherent hologram.
Tatsuki Tahara   +4 more
doaj   +1 more source

Surface resistivity/conductivity of oxide–hydroxide compounds in inhibited seawater by optical interferometry

open access: yesJournal of Saudi Chemical Society, 2016
Optical interferometry techniques were used to measure the surface resistivity/conductivity of carbon steel samples in blank seawater and in seawater with different concentrations of a corrosion inhibitor, without any physical contact. The measurement of
Khaled Habib
doaj   +1 more source

Laser Doppler holographic microscopy in transmission: application to fish embryo imaging [PDF]

open access: yes, 2014
We have extended Laser Doppler holographic microscopy to transmission geometry. The technique is validated with living fish embryos imaged by a modified upright bio-microcope.
Alexandre, Daniel   +2 more
core   +3 more sources

Holographic measurement of surface acoustic wave parameters in crystals [PDF]

open access: yesModern Electronic Materials, 2019
The theoretical basis of a specialized technique for applying digital holographic interferometry to measure the parameters of surface acoustic waves is presented, a measuring system for visualization and quantitative analysis of the parameters of ...
Michael E. Gusev, Yuri N. Zakharov
doaj   +3 more sources

Towards Reduced CNNs for De-Noising Phase Images Corrupted with Speckle Noise

open access: yesPhotonics, 2021
Digital holography is a very efficient technique for 3D imaging and the characterization of changes at the surfaces of objects. However, during the process of holographic interferometry, the reconstructed phase images suffer from speckle noise.
Marie Tahon   +2 more
doaj   +1 more source

Deep Learning Network for Speckle De-Noising in Severe Conditions

open access: yesJournal 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

Imaging velocities of a vibrating object by stroboscopic sideband holography [PDF]

open access: yes, 2012
We propose here to combine sideband holography with stroboscopic illumination synchronized with the vibration of an object. By sweeping the optical frequency of the reference beam such a way the holographic detection is tuned on the successive sideband ...
Atlan, Michael   +3 more
core   +4 more sources

Identification of temperature field in thermoacoustic generator

open access: yesEPJ Web of Conferences, 2014
Presented paper includes description of design and assemblage of an experimental device for measuring temperature field into thermoacoustic generator using holographic interferometry method.
Veselý Martin   +3 more
doaj   +1 more source

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