Zobrazeno 1 - 10
of 58
pro vyhledávání: '"Igor Shevkunov"'
Publikováno v:
Engineering Proceedings, Vol 34, Iss 1, p 19 (2023)
We consider the application of a recently developed hyperspectral broadband phase retrieval (HSPhR) technique for spectrally varying object and modulation phase masks at 100 spectral components. The HSPhR method utilizes advanced techniques such as S
Externí odkaz:
https://doaj.org/article/f2ee978bfb8c40d5ac60b258b1498a69
Autor:
Igor Shevkunov, Nikolay V. Petrov
Publikováno v:
Journal of Imaging, Vol 8, Iss 4, p 87 (2022)
In this paper, we detail a phase-shift implementation in a rotated plane-parallel plate (PPP). Considering the phase-shifting digital holography application, we provide a more precise phase-shift estimation based on PPP thickness, rotation, and mutua
Externí odkaz:
https://doaj.org/article/45750b15f11b4b4aa859b194c2d930ee
Autor:
Elena Achimova, Vladimir Abaskin, Daniel Claus, Giancarlo Pedrini, Igor Shevkunov, Vladimir Katkovnik
Publikováno v:
Компьютерная оптика, Vol 42, Iss 2, Pp 267-272 (2018)
The topography of surface relief gratings was studied by digital holographic microscopy. The applicability of the method for quantitative measurements of surface microstructure at nanoscale was demonstrated. The method for wavefront reconstruction of
Externí odkaz:
https://doaj.org/article/e2bb078b14a249bab472abc645e9ad71
Publikováno v:
Applied Sciences, Vol 8, Iss 5, p 719 (2018)
We study the problem of multiwavelength absolute phase retrieval from noisy diffraction patterns. The system is lensless with multiwavelength coherent input light beams and random phase masks applied for wavefront modulation. The light beams are form
Externí odkaz:
https://doaj.org/article/3504106503fa4761ab87322d6d1f0661
Autor:
Samuel Pinilla, Kumar Vijay Mishra, Igor Shevkunov, Mojtaba Soltanalian, Vladimir Katkovnik, Karen Egiazarian
Publikováno v:
IEEE Signal Processing Magazine. 40:46-60
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9448969e3963e52ed80896e73fc6e218
https://doi.org/10.1109/msp.2022.3214325
https://doi.org/10.1109/msp.2022.3214325
Autor:
Samuel Pinilla, Johannes E. Fröch, Seyyed Reza Miri Rostami, Vladimir Katkovnik, Igor Shevkunov, Arka Majumdar, Karen Egiazarian
Publikováno v:
Science Advances. 9
The race for miniature color cameras using flat meta-optics has rapidly developed the end-to-end design framework using neural networks. Although a large body of work has shown the potential of this methodology, the reported performance is still limi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09e70148daf25db72abf5343ca4b4511
https://doi.org/10.1126/sciadv.adg7297
https://doi.org/10.1126/sciadv.adg7297
Autor:
Samuel Pinilla, Seyyed Reza Miri Rostami, Igor Shevkunov, Vladimir Katkovnik, Karen Egiazarian
End-to-end optimization of diffractive optical elements (DOEs) profile through a digital differentiable model combined with computational imaging have gained an increasing attention in emerging applications due to the compactness of resultant physica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::83eb68d62aff23d9eb471bef5596c351
https://trepo.tuni.fi/handle/10024/143327
https://trepo.tuni.fi/handle/10024/143327
Publikováno v:
Electronic Imaging. 35:287-1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::103172b232390312870eddc6383ba7b4
https://doi.org/10.2352/ei.2023.35.9.ipas-287
https://doi.org/10.2352/ei.2023.35.9.ipas-287
Publikováno v:
Optics and Lasers in Engineering. 159:107228
In this paper, we adopt a complex-domain cube filter (CCF) developed for hyperspectral 3D complex domain images for noise suppression of 3D complex-valued data in optical diffraction tomography. CCF is based on two processing steps: singular value de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c42a56e5d128139f98901ee64c251ba2
https://doi.org/10.1016/j.optlaseng.2022.107228
https://doi.org/10.1016/j.optlaseng.2022.107228
Autor:
Seyyed Reza Miri, Rostami, Samuel, Pinilla, Igor, Shevkunov, Vladimir, Katkovnik, Karen, Egiazarian
Publikováno v:
Applied optics. 60(30)
A power-balanced hybrid optical imaging system has a diffractive computational camera, introduced in this paper, with image formation by a refractive lens and multilevel phase mask (MPM). This system provides a long focal depth with low chromatic abe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::e30c8782ba3ae3a5301b7628aefe2e05
https://pubmed.ncbi.nlm.nih.gov/34807073
https://pubmed.ncbi.nlm.nih.gov/34807073