Dr. Julianna Winnik Profile

Dr. Julianna Winnik

at Warsaw Univ of Technology

SPIE Involvement:

Author

Publications (18)

Proceedings Article | 13 March 2024 Presentation

Common path single-shot Hilbert optical diffraction tomography

Piotr Zdankowski, Julianna Winnik, Mikolaj Rogalski, Krzysztof Patorski, Maciej Trusiak

Proceedings Volume PC12852, PC1285205 (2024) https://doi.org/10.1117/12.3008482

KEYWORDS: Optical tomography, Diffraction, Singular optics, Fourier transforms, Autocorrelation, 3D image processing, Polarization gratings, Phase distribution, Holography, Demodulation

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Proceedings Article | 12 August 2023 Presentation

Polarization grating based common path optical diffraction tomography with optimized spatio-temporal coherence and reduced speckle noise

Piotr Zdankowski, Julianna Winnik, Emilia Wdowiak, Maciej Trusiak

Proceedings Volume PC12622, PC1262202 (2023) https://doi.org/10.1117/12.2673880

KEYWORDS: Holography, Microscopy, Imaging systems, Biological samples, Biological imaging, Image resolution, Holograms, Cameras, Shearing interferometers, Sensors

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Proceedings Article | 3 October 2022 Presentation + Paper

Common-path grating-based interferometers with altered temporal and spatial coherence of illumination for quantitative phase microscopy and tomography

M. Trusiak, K. Patorski, P. Zdańkowski, J. Winnik, W. Lipke

Proceedings Volume 12223, 122230G (2022) https://doi.org/10.1117/12.2636220

KEYWORDS: Tomography, Interferometry, Diffraction, Microscopes, Diffraction gratings, Microscopy, Reconstruction algorithms, Fringe analysis, Imaging systems, 3D image processing

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Proceedings Article | 21 June 2019 Paper

Comparative analysis of feedback methods in reconstruction algorithms for multiple-scattering holographic tomography

Julianna Winnik, Damian Suski, Tomasz Kozacki

Proceedings Volume 11056, 110562T (2019) https://doi.org/10.1117/12.2527408

KEYWORDS: Reconstruction algorithms, Refractive index, Tomography, Holography, Photonic crystal fibers, Wave propagation, Multiple scattering, Computer simulations

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Proceedings Article | 4 March 2019 Paper

Surface profilometry by employing synthetic partially spatially coherent holograms

Juan Martinez-Carranza, Marta Mikula, Julianna Winnik, Tomasz Kozacki

Proceedings Volume 10887, 1088704 (2019) https://doi.org/10.1117/12.2509369

KEYWORDS: Holograms, Interferometers, Wavefronts, Holographic interferometry, Visibility, Interferometry

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Proceedings Article | 7 September 2018 Paper

Autofocusing method for holographic tomography of 3D samples with large axial thickness

Julianna Winnik, Tomasz Kozacki

Proceedings Volume 10834, 108341G (2018) https://doi.org/10.1117/12.2319020

KEYWORDS: Tomography, Alignment procedures, Holography, 3D metrology, Refractive index, Holograms

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Proceedings Article | 7 September 2018 Paper

Height reconstruction algorithm for multi-incidence digital holography

Marta Mikula, Tomasz Kozacki, Julianna Winnik, Michał Józwik, Juan Martinez-Carranza

Proceedings Volume 10834, 1083424 (2018) https://doi.org/10.1117/12.2319706

KEYWORDS: Reconstruction algorithms, Digital holography, Phase measurement, Holography, Microlens, Algorithm development, Holograms, Computer simulations, Holographic interferometry, Interferometry

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Proceedings Article | 18 August 2018 Paper

Improvement of topography measurement using denoising approach in Fourier digital holographic microscopy

Marta Mikuła, Tomasz Kozacki, Michał Józwik, Julianna Winnik, Piotr Zdańkowski

Proceedings Volume 10749, 107491E (2018) https://doi.org/10.1117/12.2505440

KEYWORDS: Holograms, Optical spheres, Spherical lenses, Digital holography, Reconstruction algorithms, 3D image processing, Signal to noise ratio, Denoising, Holography, Microscopy

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Proceedings Article | 26 June 2017 Paper

Influence of the limited detector size on spatial variations of the reconstruction accuracy in holographic tomography

Julianna Kostencka, Tomasz Kozacki, Bryan Hennelly, John Sheridan

Proceedings Volume 10329, 103292W (2017) https://doi.org/10.1117/12.2270108

KEYWORDS: Holograms, Sensors, Imaging systems, Image resolution, Image quality, Refractive index, Tomography, Holography, Reconstruction algorithms, Error analysis, Digital holography, Optical tomography, Diffraction, Signal processing, Optical spheres, Microscopy

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Proceedings Article | 26 June 2017 Paper

Topography measurements of high NA aspherical microlenses by digital holographic microscopy with spherical illumination

Michal Józwik, Marta Mikuła, Tomasz Kozacki, Julianna Kostencka, Christophe Gorecki

Proceedings Volume 10329, 103290C (2017) https://doi.org/10.1117/12.2270150

KEYWORDS: Digital holography, Spherical lenses, Microlens, Microscopy, Aspheric lenses, Reflection, Reconstruction algorithms, Optical spheres

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Proceedings Article | 26 April 2016 Paper

Space-domain, filtered backpropagation algorithm for tomographic configuration with scanning of illumination

J. Kostencka, T. Kozacki

Proceedings Volume 9890, 98900F (2016) https://doi.org/10.1117/12.2229732

KEYWORDS: Tomography, Holography, Optical tomography, Diffraction, 3D metrology, Reconstruction algorithms, Refractive index, Biomedical optics, Holograms, Algorithm development, Holography, Optical filters, Optical spheres, Imaging systems, Numerical simulations, Scatter measurement

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Proceedings Article | 22 June 2015 Paper

Off-axis illumination in object-rotation diffraction tomography for enhanced alignment and resolution

Julianna Kostencka, Tomasz Kozacki

Proceedings Volume 9525, 95250M (2015) https://doi.org/10.1117/12.2184688

KEYWORDS: Tomography, Diffraction, 3D metrology, Refractive index, Super resolution, Reconstruction algorithms, Optical tomography, Holograms, Optical transfer functions, Resolution enhancement technologies

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Optical diffraction tomography (ODT) is a non-invasive method for quantitative measurement of micrometre-sized samples. In ODT a series of multiple holograms captured for various illumination directions with respect to a sample is processed using a tomographic reconstruction algorithm. The result of tomographic evaluation is 3D distribution of refractive index. Data acquisition in ODT is commonly realized in two ways, either by rotating a sample under fixed illumination and observation directions (object rotation configuration - ORC), or by scanning the illumination direction of a fixed sample (illumination scanning configuration - ISC). From the purely theoretical standpoint, the ORC configuration is superior to ISC due to larger (in terms of volume) and more isotropic optical transfer function. However, the theoretical maximal resolution achievable with ORC is lower than that provided with ISC. Moreover, the quality of tomographic reconstructions in ORC is significantly degraded due to experimental difficulties, including problematic determination of location of the rotation axis. This applies particularly to displacement of the rotation axis from the infocus plane that is either disregarded or detected with object-dependent autofocusing algorithms, which do not provide sufficient accuracy. In this paper we propose a new ODT approach, which provides solution to the both mentioned problems of ORC – the resolution limit and the rotation axis misalignment problem. The proposed tomographic method, besides rotating a sample in a full angle of 360°, uses simultaneous illumination from two fixed, highly off-axis directions. This modification enables enlarging the ORC optical transfer function up to the ISC limit. Moreover, the system enables implementation of an accurate, efficient and object-independent autofocusing method, which takes advantage of the off-axis illumination. The autofocusing method provides accurate and reliable detection of axial location of the rotation axis, enabling precise alignment of the tomographic data.

SPIE Journal Paper | 20 February 2015

Computational and experimental study on accuracy of off-axis reconstructions in optical diffraction tomography

Julianna Kostencka, Tomasz Kozacki

OE, Vol. 54, Issue 02, 024107, (February 2015) https://doi.org/10.1117/12.10.1117/1.OE.54.2.024107

KEYWORDS: Reconstruction algorithms, Tomography, Refractive index, Error analysis, Diffraction, Optical engineering, Optical tomography, Optical testing, Microscopes, Optical filters

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Proceedings Article | 16 December 2014 Paper

On accuracy of holographic shape measurement method with spherical wave illumination

Marta Mikuła, Tomasz Kozacki, Julianna Kostencka, Kamil Liżewski, Michał Józwik

Proceedings Volume 9290, 92900P (2014) https://doi.org/10.1117/12.2075807

KEYWORDS: Reconstruction algorithms, Microlens, Spherical lenses, Picosecond phenomena, Digital holography, Holography, Microscopes, Error analysis, Reflectivity, Imaging systems

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Proceedings Article | 1 May 2014 Paper

Optical diffraction tomography: accuracy of an off-axis reconstruction

Julianna Kostencka, Tomasz Kozacki

Proceedings Volume 9132, 91320M (2014) https://doi.org/10.1117/12.2052227

KEYWORDS: Reconstruction algorithms, Tomography, Refractive index, Diffraction, Error analysis, Optical tomography, Phase measurement, 3D metrology, 3D image reconstruction, Optical filters

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Proceedings Article | 23 May 2013 Paper

Holographic method for capillary induced aberration compensation for 3D tomographic measurements of living cells

Julianna Kostencka, Tomasz Kozacki, Arkadiusz Kuś, Michał Dudek, Małgorzata Kujawińska, Björn Kemper

Proceedings Volume 8792, 879204 (2013) https://doi.org/10.1117/12.2020982

KEYWORDS: Capillaries, Holograms, Tomography, Digital holography, Finite-difference time-domain method, Holography, Refractive index, Visualization, 3D metrology, Leukemia

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Proceedings Article | 13 May 2013 Paper

Hybrid and transflective system based on digital holographic microscope and low coherent interferometer for high gradient shape measurement

K. Liżewski, S. Tomczewski, J. Kostencka, T. Kozacki

Proceedings Volume 8788, 87880A (2013) https://doi.org/10.1117/12.2020980

KEYWORDS: Microlens, Microscopes, Interferometry, Beam splitters, Reconstruction algorithms, Digital holography, Imaging systems, Phase measurement, Interferometers, Reflectivity

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Proceedings Article | 5 May 2012 Paper

On topography characterization of micro-optical elements with large numerical aperture using digital holographic microscopy

K. Liżewski, T. Kozacki, M. Józwik, J. Kostencka

Proceedings Volume 8430, 84300G (2012) https://doi.org/10.1117/12.923047

KEYWORDS: Microlens, Digital holography, Reconstruction algorithms, Imaging systems, Holography, Optical components, Microscopes, Algorithm development, Beam splitters, Microscopy

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Showing 5 of 18 publications

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