Dr. Igor A. Shevkunov Profile

Dr. Igor A. Shevkunov

Postdoc at Tampere Univ

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Author

Publications (13)

Proceedings Article | 9 August 2023 Paper

CNN-assisted quantitative phase microscopy for biological cell imaging

Igor Shevkunov, Meenakshisundaram Kandhavelu, Karen Egiazarian

Proceedings Volume 12630, 1263012 (2023) https://doi.org/10.1117/12.2668352

KEYWORDS: Education and training, Phase reconstruction, Sensors, Wavefronts, Machine learning, Phase imaging, Spatial light modulators, Wave propagation, Imaging systems, Diffraction

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Proceedings Article | 20 May 2022 Presentation + Paper

On design of hybrid diffractive optics for achromatic extended depth-of-ﬁeld (EDoF) RGB imaging

Seyyed Reza Miri Rostami, Samuel Pinilla, Igor Shevkunov, Vladimir Katkovnik, Karen Eguiazarian

Proceedings Volume 12136, 121360M (2022) https://doi.org/10.1117/12.2621041

KEYWORDS: RGB color model, Hybrid optics, Imaging systems, Sensors, Spatial light modulators, Signal to noise ratio, Point spread functions, Cameras, Optimization (mathematics), Image sensors

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Proceedings Article | 5 March 2021 Poster + Presentation + Paper

Deep convolutional neural network-based lensless quantitative phase retrieval

Igor Shevkunov, Jarkko Kilpeläinen, Karen Eguiazarian

Proceedings Volume 11653, 116531F (2021) https://doi.org/10.1117/12.2581428

KEYWORDS: Phase retrieval, Neural networks, Sensors, Optical networks, Image sensors, Convolutional neural networks

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SPIE Journal Paper | 29 January 2021 Open Access

Hyperspectral phase retrieval: spectral–spatial data processing with sparsity-based complex domain cube filter

Vladimir Katkovnik, Igor Shevkunov, Karen Eguiazarian

OE, Vol. 60, Issue 01, 013108, (January 2021) https://doi.org/10.1117/12.10.1117/1.OE.60.1.013108

KEYWORDS: Phase retrieval, Algorithm development, Data processing, Sensors, Reconstruction algorithms, Refractive index, Wavefronts, Optical engineering, Optical filters, Spectroscopy

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Proceedings Article | 30 March 2020 Presentation + Paper

Hyperspectral phase retrieval

Vladimir Katkovnik, Igor Shevkunov, Karen Eguiazarian

Proceedings Volume 11351, 113511G (2020) https://doi.org/10.1117/12.2553713

KEYWORDS: Phase retrieval, Sensors, Reconstruction algorithms, Spectroscopy

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Proceedings Article | 21 June 2019 Paper

Single exposure lensless subpixel phase imaging

Péter Kocsis, Igor Shevkunov, Vladimir Katkovnik, Karen Egiazarian

Proceedings Volume 11062, 1106212 (2019) https://doi.org/10.1117/12.2525679

KEYWORDS: Phase retrieval, Phase imaging, Optical systems, Phase measurement, Phase modulation, Wavefronts, Super resolution, Wave propagation, Image resolution, Diffraction, Reconstruction algorithms

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Proceedings Article | 31 December 2018 Paper

Noise minimizing by harmonic phase diffraction gratings in off-axis lensless digital holography

V. Cazac, E. Achimova, V. Abashkin, A. Meshalkin, I. Shevkunov, V. Katkovnik

Proceedings Volume 10977, 109771Z (2018) https://doi.org/10.1117/12.2323560

KEYWORDS: Digital holography, Diffraction gratings, Phase shift keying, Phase modulation, Holograms, Diffraction, Holography, CCD image sensors, Wavefronts, Light wave propagation

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SPIE Journal Paper | 26 August 2018 Open Access

Multiwavelength surface contouring from phase-coded noisy diffraction patterns: wavelength-division optical setup

Vladimir Katkovnik, Igor Shevkunov, Nikolay Petrov, Karen Egiazarian

OE, Vol. 57, Issue 08, 085105, (August 2018) https://doi.org/10.1117/12.10.1117/1.OE.57.8.085105

KEYWORDS: Reconstruction algorithms, Algorithm development, Phase retrieval, Signal to noise ratio, Diffraction, Phase shift keying, Wavefronts, Sensors, RGB color model, Photons

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Proceedings Article | 18 August 2018 Presentation + Paper

Features of surface contouring by digital holographic interferometry with tilt of the object illumination

Nikolay Petrov, Vladislav Skobnikov, Igor Shevkunov, Andrei Belashov, Alexander Fedin

Proceedings Volume 10749, 1074906 (2018) https://doi.org/10.1117/12.2321207

KEYWORDS: Digital holography, Holograms, Holographic interferometry, Wavefronts, 3D image reconstruction, Interferometry, Speckle, Inspection

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Proceedings Article | 24 May 2018 Presentation + Paper

Multiwavelength surface contouring from phase-coded diffraction patterns

Vladimir Katkovnik, Igor Shevkunov, Nikolay Petrov, Karen Eguiazarian

Proceedings Volume 10677, 106771B (2018) https://doi.org/10.1117/12.2306127

KEYWORDS: Reconstruction algorithms, Phase retrieval, Signal to noise ratio, Algorithm development, Sensors, Photons, Wavefronts, Diffraction, Image processing

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Proceedings Article | 26 June 2017 Paper

Computational wavelength resolution for in-line lensless holography: phase-coded diffraction patterns and wavefront group-sparsity

Vladimir Katkovnik, Igor Shevkunov, Nikolay Petrov, Karen Egiazarian

Proceedings Volume 10335, 1033509 (2017) https://doi.org/10.1117/12.2269327

KEYWORDS: Diffraction, Super resolution, Algorithm development, Phase retrieval, Phase modulation, Reconstruction algorithms, Holography, Wavefronts, Wave propagation, Sensors, Computational imaging, 3D image processing, Image filtering

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Proceedings Article | 8 May 2015 Paper

Sparse approximations of phase and amplitude for wave field reconstruction from noisy data

Vladimir Katkovnik, Igor Shevkunov, Nikolay Petrov, Karen Egiazarian

Proceedings Volume 9508, 950802 (2015) https://doi.org/10.1117/12.2177657

KEYWORDS: Reconstruction algorithms, Wavefronts, Algorithm development, Argon, Holography, Associative arrays, Sensors, Digital holography, Holograms, Wavefront reconstruction

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Proceedings Article | 11 November 2014 Paper

Comparison of digital holography and iterative phase retrieval methods for wavefront reconstruction

Igor Shevkunov, Nikolay Balbekin, Nikolay Petrov

Proceedings Volume 9271, 927128 (2014) https://doi.org/10.1117/12.2071469

KEYWORDS: Digital holography, Phase retrieval, Wavefronts, Reconstruction algorithms, 3D image reconstruction, Holograms, Wavefront reconstruction, Holography, Wave propagation, Iterative methods

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Showing 5 of 13 publications

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