Results 151 to 160 of about 6,641 (217)

Wavefront shaping improves the transparency of the scattering media: a review. [PDF]

J Biomed Opt
Ding C, Shao R, He Q, Li LS, Yang J.
europepmc   +1 more source

Scattering Coefficient Estimation Using Thin-Film Phantoms with a Spectral-Domain Dental OCT System. [PDF]

Sensors (Basel)
Herath HMSS, Madusanka N, Choi ES, Woosub S, Chang R, Lee G, Yi M, Ahn JS, Lee BI.   +8 more
europepmc   +1 more source

Research progress of residual stress measurement methods. [PDF]

Heliyon
Li X, Liu J, Wu H, Miao K, Wu H, Li R, Liu C, Fang W, Fan G.   +8 more
europepmc   +1 more source

Non-Destructive Testing and Evaluation of Hybrid and Advanced Structures: A Comprehensive Review of Methods, Applications, and Emerging Trends. [PDF]

Sensors (Basel)
Abdollahi-Mamoudan F, Ibarra-Castanedo C, Maldague XPV.   +2 more
europepmc   +1 more source

Optical label-free microscopy characterization of dielectric nanoparticles.

Nanoscale
García Rodríguez B, Olsén E, Skärberg F, Volpe G, Höök F, Midtvedt DS.   +5 more
europepmc   +1 more source

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Vibration phase mapping using electronic speckle pattern interferometry

Applied Optics, 1976
The contours of constant phases across sinusoidally vibrating objects have been mapped using reference wave phase modulation in time-average electronic speckle pattern interferometry.
O J, Løkberg, K, Høgmoen
openaire   +4 more sources

Electronic speckle pattern interferometry using digital image processing techniques

Applied Optics, 1980
The use of digital image processing techniques for electronic speckle pattern interferometry is discussed. A digital TV-image processing system with a large frame memory allows us to perform precise and flexible operations such as subtraction, summation, and level slicing. Digital image processing techniques make it easy compared with analog techniques
S, Nakadate, T, Yatagai, H, Saito
openaire   +4 more sources

Multiplicative electronic speckle-pattern interferometry fringes

Applied Optics, 2000
A theoretical analysis of fringe patterns and its experimental corroboration obtained by multiplication of two speckled images with electronic speckle-pattern interferometry (ESPI) are reported. A specifically designed digital filter is used to enhance the contrast and visibility of the inherently noisy multiplication fringes.
N, Alcalá Ochoa, F, Mendoza Santoyo, C, Pérez López, B, Barrientos   +3 more
openaire   +2 more sources

Electronic speckle pattern interferometry using vortex beams

Optics Letters, 2011
We show that it is possible to perform electronic speckle pattern interferometry (ESPI) using, for the first time to our knowledge, vortex beams as the reference beam. The technique we propose is easy to implement, and the advantages obtained are, among others, environmental stability, lower processing time, and the possibility to switch between ...
Restrepo, Rene, Uribe, Néstor, Belenguer, Tomás   +2 more
openaire   +3 more sources