Results 131 to 140 of about 46,600 (175)

Smartphone-Based Methodology Applied to Electromagnetic Field Exposure Assessment. [PDF]

open access: yesSensors (Basel)
López-Espí PL   +5 more
europepmc   +1 more source

Editorial

open access: yesImafronte
Carlos Espí Forcén
doaj  

UN-PUNet for phase unwrapping from a single uneven and noisy ESPI phase pattern.

Journal of The Optical Society of America A-optics Image Science and Vision, 2023
The wrapped phase patterns of objects with varying materials exhibit uneven gray values. Phase unwrapping is a tricky problem from a single wrapped phase pattern in electronic speckle pattern interferometry (ESPI) due to the gray unevenness and noise. In
Hongxuan He   +4 more
semanticscholar   +1 more source

In-plane ESPI with unlimited angle of view for multi-object rotation angle determination.

Optics Letters, 2023
The in-plane electronic speckle pattern interferometry (ESPI), implemented in a Michelson stellar interferometer-like configuration, offers high sensitivity and dynamic measurement.
Hanyang Jiang   +6 more
semanticscholar   +1 more source

Application of attention-DnCNN for ESPI fringe patterns denoising.

Journal of The Optical Society of America A-optics Image Science and Vision, 2022
Fringe patterns' denoising in electronic speckle pattern interferometry (ESPI) is an important step in phase extraction. In this study, we propose a new denoising method for ESPI fringe patterns based on a convolutional neural network (CNN). The proposed
Linlin Wang   +3 more
semanticscholar   +1 more source

Experimental verification of full-field accuracy in stereo-DIC based on the ESPI method.

Applied Optics, 2022
This paper proposes a method to merge stereo-digital image correlation (DIC) and electronic speckle pattern interferometry (ESPI) data by camera calibration.
Xiangyang Xu   +4 more
semanticscholar   +1 more source

DBDNet for denoising in ESPI wrapped phase patterns with high density and high speckle noise.

Applied Optics, 2021
In this paper, we propose a dilated-blocks-based deep convolution neural network, named DBDNet, for denoising in electronic speckle pattern interferometry (ESPI) wrapped phase patterns with high density and high speckle noise. In our method, the proposed
Jianming Li   +4 more
semanticscholar   +1 more source

Study of inhomogeneous fields of residual stresses using step-by-step enlarged crack method in combination with electronic speckle pattern interferometry (ESPI)

Industrial laboratory Diagnostics of materials, 2021
This article covers the development of methodological issues, software, experimental equipment, and practical application of the method of sequentially increasing cracks for studying inhomogeneous high-gradient fields of residual stresses (RS) that occur
S. M. Usov, I. Razumovsky, I. Odintsev
semanticscholar   +1 more source

Tri-wavelength simultaneous ESPI for 3D micro-deformation field measurement.

Applied Optics, 2021
Electronic speckle pattern interferometry (ESPI), a well-established technique for micro-deformation measurement, can be used to determine both in-plane and out-of-plane displacement components.
Hanyang Jiang   +4 more
semanticscholar   +1 more source

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