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Single exposure lensless subpixel phase imaging: Optical system design, modelling, and experimental study

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Single exposure lensless subpixel phase imaging : Optical system design, modelling, and experimental study. / Kocsis, Péter; Shevkunov, Igor; Katkovnik, Vladimir; Egiazarian, Karen.

In: Optics Express, Vol. 28, No. 4, 17.02.2020, p. 4625-4637.

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@article{1864dd395f3448d7a56a6085e1cc5119,
title = "Single exposure lensless subpixel phase imaging: Optical system design, modelling, and experimental study",
abstract = "Design and optimization of lensless phase-retrieval optical system with phase modulation of free-space propagation wavefront is proposed for subpixel imaging to achieve super-resolution reconstruction. Contrary to the traditional super-resolution phase-retrieval, the method in this paper requires a single observation only and uses the advanced Super-Resolution Sparse Phase Amplitude Retrieval (SR-SPAR) iterative technique which contains optimized sparsity based filters and multi-scale filters. The successful object imaging relies on modulation of the object wavefront with a random phase-mask, which generates coded diffracted intensity pattern, allowing us to extract subpixel information. The system’s noise-robustness was investigated and verified. The super-resolution phase-imaging is demonstrated by simulations and physical experiments. The simulations included high quality reconstructions with super-resolution factor of 5, and acceptable at factor up to 9. By physical experiments 3 µm details were resolved, which are 2.3 times smaller than the resolution following from the Nyquist-Shannon sampling theorem.",
author = "P{\'e}ter Kocsis and Igor Shevkunov and Vladimir Katkovnik and Karen Egiazarian",
year = "2020",
month = "2",
day = "17",
doi = "10.1364/OE.379785",
language = "English",
volume = "28",
pages = "4625--4637",
journal = "Opt. Express",
issn = "1094-4087",
publisher = "OPTICAL SOC AMER",
number = "4",

}

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TY - JOUR

T1 - Single exposure lensless subpixel phase imaging

T2 - Optical system design, modelling, and experimental study

AU - Kocsis, Péter

AU - Shevkunov, Igor

AU - Katkovnik, Vladimir

AU - Egiazarian, Karen

PY - 2020/2/17

Y1 - 2020/2/17

N2 - Design and optimization of lensless phase-retrieval optical system with phase modulation of free-space propagation wavefront is proposed for subpixel imaging to achieve super-resolution reconstruction. Contrary to the traditional super-resolution phase-retrieval, the method in this paper requires a single observation only and uses the advanced Super-Resolution Sparse Phase Amplitude Retrieval (SR-SPAR) iterative technique which contains optimized sparsity based filters and multi-scale filters. The successful object imaging relies on modulation of the object wavefront with a random phase-mask, which generates coded diffracted intensity pattern, allowing us to extract subpixel information. The system’s noise-robustness was investigated and verified. The super-resolution phase-imaging is demonstrated by simulations and physical experiments. The simulations included high quality reconstructions with super-resolution factor of 5, and acceptable at factor up to 9. By physical experiments 3 µm details were resolved, which are 2.3 times smaller than the resolution following from the Nyquist-Shannon sampling theorem.

AB - Design and optimization of lensless phase-retrieval optical system with phase modulation of free-space propagation wavefront is proposed for subpixel imaging to achieve super-resolution reconstruction. Contrary to the traditional super-resolution phase-retrieval, the method in this paper requires a single observation only and uses the advanced Super-Resolution Sparse Phase Amplitude Retrieval (SR-SPAR) iterative technique which contains optimized sparsity based filters and multi-scale filters. The successful object imaging relies on modulation of the object wavefront with a random phase-mask, which generates coded diffracted intensity pattern, allowing us to extract subpixel information. The system’s noise-robustness was investigated and verified. The super-resolution phase-imaging is demonstrated by simulations and physical experiments. The simulations included high quality reconstructions with super-resolution factor of 5, and acceptable at factor up to 9. By physical experiments 3 µm details were resolved, which are 2.3 times smaller than the resolution following from the Nyquist-Shannon sampling theorem.

U2 - 10.1364/OE.379785

DO - 10.1364/OE.379785

M3 - Article

VL - 28

SP - 4625

EP - 4637

JO - Opt. Express

JF - Opt. Express

SN - 1094-4087

IS - 4

ER -