Dr. Karel Fliegel Profile

Dr. Karel Fliegel

Assistant Professor at Czech Technical Univ in Prague

SPIE Involvement:

Author | Editor

Websites:

Company Website

Publications (60)

Proceedings Article | 21 August 2020 Poster + Presentation + Paper

LFDD: Light field image dataset for performance evaluation of objective quality metrics

Adam Zizien, Karel Fliegel

Proceedings Volume 11510, 115102U (2020) https://doi.org/10.1117/12.2568490

KEYWORDS: Distortion, Image compression, Image quality, Video compression, Video, Image processing, Computer programming, MATLAB

Read Abstract +

Proceedings Article | 6 September 2019 Paper

Evaluating resolution in live cell structured illumination microscopy

Jakub Pospíšil, Karel Fliegel, Jan Švihlík, Miloš Klíma

Proceedings Volume 11137, 1113708 (2019) https://doi.org/10.1117/12.2527885

KEYWORDS: Microscopes, Image resolution, Microscopy, Diffraction, Spatial resolution, Video, Super resolution, Live cell imaging, Super resolution microscopy

Read Abstract +

Proceedings Article | 6 September 2019 Paper

Variational approach to semi-automated 2D image segmentation

Jaromír Kukal, Zuzana Krbcová, Iva Nachtigalová, Jan Švihlík, Karel Fliegel

Proceedings Volume 11137, 111372H (2019) https://doi.org/10.1117/12.2529374

KEYWORDS: Image segmentation, Image enhancement, Brain, Image processing, Visualization, Computed tomography, Head, Magnetic resonance imaging

Read Abstract +

Proceedings Article | 6 September 2019 Paper

Stationarity testing in 2D image analysis

Jaromír Kukal, Iva Nachtigalová, Zuzana Krbcová, Jan Švihlík, Karel Fliegel

Proceedings Volume 11137, 111372G (2019) https://doi.org/10.1117/12.2529346

KEYWORDS: Edge detection, Sensors, Image analysis, Image processing, Binary data, Image segmentation, Testing and analysis, Neuroimaging, Brain, Digital imaging

Read Abstract +

Proceedings Article | 17 September 2018 Presentation + Paper

Overview of the JPEG XS core coding system subjective evaluations

Alexandre Willème, Saeed Mahmoudpour , Irene Viola, Karel Fliegel, Jakub Pospíšil, Touradj Ebrahimi, Peter Schelkens, Antonin Descampe, Benoit Macq

Proceedings Volume 10752, 107521M (2018) https://doi.org/10.1117/12.2323435

KEYWORDS: Visualization, Video, Video compression, Image compression, Visual compression, Image quality standards, Video acceleration, Standards development, Discrete wavelet transforms, Transparency

Read Abstract +

Proceedings Article | 17 September 2018 Paper

Stochastic and analytic modeling of atmospheric turbulence in image processing

Zuzana Krbcová, Jaromír Kukal, Quang Van Tran, Jan Švihlík, Karel Fliegel

Proceedings Volume 10752, 107522N (2018) https://doi.org/10.1117/12.2321199

KEYWORDS: Stochastic processes, Signal to noise ratio, Atmospheric turbulence, Atmospheric modeling, Fourier transforms, Monte Carlo methods, Optical transfer functions, Turbulence, Filtering (signal processing), Image processing

Read Abstract +

Proceedings Article | 17 September 2018 Paper

Stabilization of median smoother via variational approach

Zuzana Krbcová, Abduljalil Sireis, Jaromír Kukal, Jan Švihlík, Karel Fliegel

Proceedings Volume 10752, 107522O (2018) https://doi.org/10.1117/12.2321226

KEYWORDS: Signal to noise ratio, Digital filtering, Smoothing, Image filtering, Nonlinear filtering, Image processing, Infinite impulse response filters, Iterative methods, Image restoration, Image quality

Read Abstract +

Proceedings Article | 17 September 2018 Paper

Comparison of resolution estimation methods in optical microscopy

Jakub Pospíšil, Karel Fliegel, Jan Švihlík, Miloš Klíma

Proceedings Volume 10752, 107522Q (2018) https://doi.org/10.1117/12.2321301

KEYWORDS: Modulation transfer functions, Optical microscopy, Image resolution, Microscopy, Diffraction, Microscopes, Objectives, Spatial frequencies, Point spread functions, Optical resolution

Read Abstract +

Proceedings Article | 17 September 2018 Paper

Performance comparison of perceived image color difference measures

Karel Fliegel, Jana Kolmašová, Jan Švihlík

Proceedings Volume 10752, 107522U (2018) https://doi.org/10.1117/12.2321644

KEYWORDS: Databases, Image quality, Color difference, Statistical analysis, Image filtering, Image processing, Visual system, Video

Read Abstract +

Proceedings Article | 1 December 2017 Paper

Assessing resolution in live cell structured illumination microscopy

Jakub Pospíšil, Karel Fliegel, Miloš Klíma

Proceedings Volume 10603, 106030D (2017) https://doi.org/10.1117/12.2292793

KEYWORDS: Microscopy, Super resolution, Spectral resolution, Fourier transforms

Read Abstract +

Proceedings Article | 19 September 2017 Paper

Estimation of Poisson noise in spatial domain

Jan Švihlík, Karel Fliegel, Stanislav Vítek, Jaromír Kukal, Zuzana Krbcová

Proceedings Volume 10396, 103962X (2017) https://doi.org/10.1117/12.2274149

KEYWORDS: Astronomy, Denoising, Probability theory, Image processing, CCD image sensors, Image analysis, Cameras

Read Abstract +

Proceedings Article | 19 September 2017 Paper

Smoothing of astronomical images with Poisson distribution

Zuzana Krbcová, Jaromír Kukal, Jan Švihlík, Karel Fliegel

Proceedings Volume 10396, 103962V (2017) https://doi.org/10.1117/12.2274121

KEYWORDS: Smoothing, Astronomy, Digital cameras, Image enhancement, CCD cameras, Image sensors, Cameras, Numerical analysis, Imaging systems, Image analysis

Read Abstract +

Proceedings Article | 19 September 2017 Paper

Analysis of image reconstruction artifacts in structured illumination microscopy

Jakub Pospíšil, Karel Fliegel, Miloš Klíma

Proceedings Volume 10396, 1039632 (2017) https://doi.org/10.1117/12.2274418

KEYWORDS: Image restoration, Super resolution, Microscopy, Signal to noise ratio, Resolution enhancement technologies, Medical imaging, Image analysis, Optical resolution, Optical microscopes

Read Abstract +

Proceedings Article | 19 September 2017 Paper

Resolution analysis of archive films for the purpose of their optimal digitization and distribution

Karel Fliegel, Stanislav Vítek, Petr Páta, Jiří Myslík, Josef Pecák, Marek Jícha

Proceedings Volume 10396, 103962T (2017) https://doi.org/10.1117/12.2274095

KEYWORDS: Image resolution, Image quality, Scanners, Video, Multimedia

Read Abstract +

Proceedings Article | 28 September 2016 Paper

Fast estimate of Hartley entropy in image sharpening

Zuzana Krbcová, Jaromír Kukal, Jan Svihlik, Karel Fliegel

Proceedings Volume 9971, 99712I (2016) https://doi.org/10.1117/12.2237743

KEYWORDS: Image enhancement, Magnetic resonance imaging, Image filtering, Edge detection, Signal to noise ratio, Image quality, Image restoration, Reconstruction algorithms, Quality measurement, Digital image processing

Read Abstract +

Proceedings Article | 28 September 2016 Paper

Meteor tracking via local pattern clustering in spatio-temporal domain

Jaromír Kukal, Martin Klimt, Jan Švihlík, Karel Fliegel

Proceedings Volume 9971, 99712M (2016) https://doi.org/10.1117/12.2237649

KEYWORDS: Video, Statistical analysis, Stars, Image analysis, Imaging systems, Principal component analysis, Cameras, Dimension reduction, Data processing, Radon

Read Abstract +

Proceedings Article | 27 September 2016 Presentation + Paper

Application of field dependent polynomial model

Petr Janout, Petr Páta, Petr Skala, Karel Fliegel, Stanislav Vítek, Jan Bednář

Proceedings Volume 9971, 99710F (2016) https://doi.org/10.1117/12.2237310

KEYWORDS: Systems modeling, Imaging systems, Zernike polynomials, Point spread functions, Cameras, Wavefront aberrations, RGB color model, Sensors, Data modeling, Stars

Read Abstract +

Proceedings Article | 27 September 2016 Paper

Evaluation of color grading impact in restoration process of archive films

Karel Fliegel, Stanislav Vítek, Petr Páta, Petr Janout, Jiří Myslík, Josef Pecák, Marek Jícha

Proceedings Volume 9971, 997121 (2016) https://doi.org/10.1117/12.2237558

KEYWORDS: Image analysis, Image processing, Digital imaging, Calibration, Digital cameras, Cameras, Molybdenum, Autoregressive models, Projection systems, Distortion

Read Abstract +

Proceedings Article | 22 September 2015 Paper

Rendering of HDR content on LDR displays: an objective approach

Lukáš Krasula, Manish Narwaria, Karel Fliegel, Patrick Le Callet

Proceedings Volume 9599, 95990X (2015) https://doi.org/10.1117/12.2186388

KEYWORDS: Time multiplexed optical shutter, High dynamic range imaging, Chromium, Image processing, Image fusion, Image quality, Distortion, Imaging systems, Optimization (mathematics), Visibility

Read Abstract +

Proceedings Article | 22 September 2015 Paper

GPU accelerated processing of astronomical high frame-rate videosequences

Stanislav Vítek, Jan Švihlík, Lukáš Krasula, Karel Fliegel, Petr Páta

Proceedings Volume 9599, 95992L (2015) https://doi.org/10.1117/12.2188610

KEYWORDS: Convolution, Astronomy, Video, Cameras, Imaging systems, Video acceleration, Data processing, Image processing, Video processing, Sensors

Read Abstract +

Proceedings Article | 22 September 2015 Paper

Meteor localization via statistical analysis of spatially temporal fluctuations in image sequences

Jaromír Kukal, Martin Klimt, Jan Švihlík, Karel Fliegel

Proceedings Volume 9599, 95992C (2015) https://doi.org/10.1117/12.2188186

KEYWORDS: Statistical analysis, Video, Visualization, Atmospheric turbulence, Image analysis, Cameras, Signal detection, Earth's atmosphere, Statistical modeling, Imaging systems

Read Abstract +

Proceedings Article | 22 September 2015 Paper

Performance evaluation of image deconvolution techniques in space-variant astronomical imaging systems with nonlinearities

Karel Fliegel, Petr Janout, Jan Bednář, Lukáš Krasula, Stanislav Vítek, Jan Švihlík, Petr Páta

Proceedings Volume 9599, 959927 (2015) https://doi.org/10.1117/12.2187888

KEYWORDS: Imaging systems, Deconvolution, Point spread functions, Image deconvolution, Astronomical imaging, Signal to noise ratio, Astronomy, Image processing, Image analysis, Complex systems

Read Abstract +