Results 21 to 30 of about 178,077 (297)

Channel sensing for holographic interference surfaces based on the principle of interferometry [PDF]

open access: yes, 2023
The Holographic Interference Surface (HIS) provides a new paradigm for building a more cost-effective wireless communication architecture. In this paper, we derive the principles of holographic interference theory for electromagnetic wave reception and transmission, whereby the optical holography is extended to communication holography and a channel ...
arxiv   +1 more source

Deep Learning-Based Wrapped Phase Denoising Method for Application in Digital Holographic Speckle Pattern Interferometry

open access: yesApplied 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

Digital holographic setups for phase object measurements in micro and macro scale

open access: yesEPJ Web of Conferences, 2015
The measurement of properties of so called phase objects is being solved for more than one Century starting probably with schlieren technique 1.
Lédl Vít   +3 more
doaj   +1 more source

Investigation of Nailed Timber Connections Using the Laser Interferometry Method

open access: yesSlovak Journal of Civil Engineering, 2018
The paper presents an adapted methodology of laser holographic interferometry for an investigation of the stress-strain state of nailed timber connections.
Savytskyi Mykola   +4 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

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

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

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

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

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