Results 21 to 30 of about 28,756 (270)

Roadmap on Digital Holography-Based Quantitative Phase Imaging

Journal of Imaging, 2021
Quantitative Phase Imaging (QPI) provides unique means for the imaging of biological or technical microstructures, merging beneficial features identified with microscopy, interferometry, holography, and numerical computations.
Vinoth Balasubramani, Małgorzata Kujawińska, Cédric Allier, Vijayakumar Anand, Chau-Jern Cheng, Christian Depeursinge, Nathaniel Hai, Saulius Juodkazis, Jeroen Kalkman, Arkadiusz Kuś, Moosung Lee, Pierre J. Magistretti, Pierre Marquet, Soon Hock Ng, Joseph Rosen, Yong Keun Park, Michał Ziemczonok   +16 more
doaj   +1 more source

On-chip digital holographic interferometry for measuring wavefront deformation in transparent samples.

Optics Express, 2023
This paper describes on-chip digital holographic interferometry for measuring the wavefront deformation of transparent samples. The interferometer is based on a Mach-Zehnder arrangement with a waveguide in the reference arm, which allows for a compact on-
Marek Mach, P. Psota, K. Žídek, P. Mokry   +3 more
semanticscholar   +1 more source

Defect Isolation from Whole to Local Field Separation in Complex Interferometry Fringe Patterns through Development of Weighted Least-Squares Algorithm

Digital, 2023
In this paper, based on Gaussian 1σ-criterion and histogram segmentation, a weighted least-squares algorithm is applied and validated on digital holographic speckle pattern interferometric data to perform phase separation on the complex interference ...
Zhenkai Chen, Wenjing Zhou, Yingjie Yu, Vivi Tornari, Gilberto Artioli   +4 more
doaj   +1 more source

Recording of Long Low-Amplitude Bulk Elastic Waves in Transparent Solid Waveguides by Digital and Classical Holography

Applied Sciences, 2022
In this paper we compare two implementations of the holographic technique for recording long, nonlinear, elastic waves of low amplitude in solid polymer waveguides: classical holographic interferometry and digital holography.
Andrey V. Belashov, Anna A. Zhikhoreva, Irina V. Semenova   +2 more
doaj   +1 more source

Enhanced sensitivity digital holographic interferometry [PDF]

Optics Express, 2007
Corona discharges are generally characterized by a low optical density whose detection is often near or under the limits of interferometric techniques. In this paper, we propose a method of digital holographic interferometry that enables detection with enhanced sensitivity.
Demoli, Nazif, Torzynski, Marc, Vukičević, Dalibor   +2 more
openaire   +2 more sources

Deep Learning Network for Speckle De-Noising in Severe Conditions

Journal 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, Silvio Montrésor, Pascal Picart   +2 more
doaj   +1 more source

Three-dimensional density field of a screeching under-expanded jet in helical mode using multi-view digital holographic interferometry

Journal of Fluid Mechanics, 2022
A synchronised multi-axis digital holographic interferometry set-up is presented for the study of 3-D flow fields with large density gradients. This optical configuration provides instantaneous interferograms with fine spatial resolution in six ...
O. Léon, D. Donjat, F. Olchewsky, J. Desse, F. Nicolas, F. Champagnat   +5 more
semanticscholar   +1 more source

Speckle denoising based on deep learning via a conditional generative adversarial network in digital holographic interferometry.

Optics Express, 2022
Speckle denoising can improve digital holographic interferometry phase measurements but may affect experimental accuracy. A deep-learning-based speckle denoising algorithm is developed using a conditional generative adversarial network.
Q. Fang, H. Xia, Qinghe Song, Mei-Li Zhang, Rongxin Guo, S. Montrésor, P. Picart   +6 more
semanticscholar   +1 more source

Incoherent Digital Holography for Multidimensional Motion Picture Imaging

Engineering 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, Yuichi Kozawa, Tomoya Nakamura, Atsushi Matsuda, Tomoyoshi Shimobaba   +4 more
doaj   +1 more source

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

Modern 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