Dr. Michael A. Unser Profile

Dr. Michael A. Unser

SPIE Involvement:

Author

Publications (76)

Proceedings Article | 24 July 2024 Presentation

Fast quantitative phase imaging with an LED array microscope using a perturbative approach

Jonathan Dong, Kuan-Chen Shen, Michael Unser, Laura Waller, Ruiming Cao

Proceedings Volume PC12996, PC129960D (2024) https://doi.org/10.1117/12.3022419

KEYWORDS: Phase imaging, Microscopes, Light emitting diodes, Imaging arrays, Biological imaging, Reconstruction algorithms, Phase contrast, Image processing, Nonlinear optimization, Multiplexing

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SPIE Journal Paper | 27 November 2018 Open Access

Multimodal imaging and high-throughput image-processing for drug screening on living organisms on-chip

Daniel Migliozzi, Matteo Cornaglia, Laurent Mouchiroud, Virginie Uhlmann, Michael Unser, Johan Auwerx, Martin A. Gijs

JBO, Vol. 24, Issue 02, 021205, (November 2018) https://doi.org/10.1117/12.10.1117/1.JBO.24.2.021205

KEYWORDS: Organisms, Microfluidics, Multimodal imaging, Luminescence, Multiplexing, Imaging systems, Liquids, Diffusion, Image analysis, Genetics

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Proceedings Article | 23 February 2018 Paper

Imaging complex objects using learning tomography

JooWon Lim, Alexandre Goy, Morteza Hasani Shoreh , Michael Unser, Demetri Psaltis

Proceedings Volume 10503, 105031T (2018) https://doi.org/10.1117/12.2288920

KEYWORDS: Multiple scattering, Tomography, Beam propagation method, Mie scattering, Optical tomography, Biomedical optics

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Proceedings Article | 26 June 2017 Open Access

Imaging cell clusters and tissue using learning tomography

M. Hasani Shoreh, A. Goy, J. Lim, U. Kamilov, M. Unser, D. Psaltis

Proceedings Volume 10333, 1033306 (2017) https://doi.org/10.1117/12.2275250

KEYWORDS: Refractive index, Scattering, Tomography, Optical tomography, Beam propagation method, Yeast, Reconstruction algorithms, Fourier transforms, Atrial fibrillation, Diffraction

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Proceedings Article | 22 July 2016 Paper

Back-propagating the light of field stars to probe telescope mirrors aberrations

F. Soulez, F. Courbin, M. Unser

Proceedings Volume 9912, 991277 (2016) https://doi.org/10.1117/12.2232702

KEYWORDS: Stars, Point spread functions, Space telescopes, Mirrors, Inverse optics, Telescopes, Space telescopes, Telescopes, Sensors, Interfaces, Galactic astronomy, Phase retrieval

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Proceedings Article | 11 September 2015 Paper

Fast live cell imaging at nanometer scale using annihilating filter-based low-rank Hankel matrix approach

Junhong Min, Lina Carlini, Michael Unser, Suliana Manley, Jong Chul Ye

Proceedings Volume 9597, 95970V (2015) https://doi.org/10.1117/12.2187393

KEYWORDS: Point spread functions, Molecules, Microscopy, Deconvolution, Live cell imaging, Temporal resolution, Signal to noise ratio, Spatial resolution, Algorithm development, Imaging systems

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Proceedings Article | 6 May 2010 Paper

Artifact-free reconstruction from off-axis digital holograms through nonlinear filtering

Nicolas Pavillon, Chandra Sekhar Seelamantula, Michael Unser, Christian Depeursinge

Proceedings Volume 7723, 77231U (2010) https://doi.org/10.1117/12.854178

KEYWORDS: Nonlinear filtering, Holograms, Digital holography, Speckle, Holography, Image filtering, Fourier transforms, Wavefronts, Electronic filtering, Linear filtering

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Proceedings Article | 4 September 2009 Paper

Pouya Dehghani Tafti, Michael Unser

Proceedings Volume 7446, 74460Y (2009) https://doi.org/10.1117/12.824873

KEYWORDS: Wavelets, Mathematical modeling, Fourier transforms, Stochastic processes, Motion analysis, Data modeling, Fractal analysis, Motion models, Wavelet transforms, Space operations

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Proceedings Article | 4 September 2009 Paper

Pyramid-based texture synthesis using local orientation and multidimensional histogram matching

Dimitri Van De Ville, Matthieu Guerquin-Kern, Michael Unser

Proceedings Volume 7446, 74460X (2009) https://doi.org/10.1117/12.826812

KEYWORDS: Stochastic processes, Bandpass filters, Image processing, Statistical analysis, Wavelets, Color image processing, Quantization, Computer graphics, Computer vision technology, Statistical modeling

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Proceedings Article | 4 September 2009 Paper

Wavelet primal sketch representation using Marr wavelet pyramid and its reconstruction

Dimitri Van De Ville, Michael Unser

Proceedings Volume 7446, 74460W (2009) https://doi.org/10.1117/12.825972

KEYWORDS: Wavelets, Reconstruction algorithms, Projection systems, Transform theory, Wavelet transforms, Image processing, Smoothing, Visual process modeling, Fourier transforms, Image restoration

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Proceedings Article | 3 September 2009 Paper

Gabor wavelet analysis and the fractional Hilbert transform

Kunal Narayan Chaudhury, Michael Unser

Proceedings Volume 7446, 74460T (2009) https://doi.org/10.1117/12.824863

KEYWORDS: Wavelets, Phase shifts, Superposition, Signal analyzers, Modulation, Wavelet transforms, Signal processing, Solids, Fourier transforms, Biological research

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Proceedings Article | 14 July 2009 Paper

See the brain at work: intraoperative laser Doppler functional brain imaging

E. Martin-Williams, A. Raabe, D. Van De Ville, M. Leutenegger, A. Szelényi, E. Hattingen, R. Gerlach, V. Seifert, C. Hauger, A. Lopez, R. Leitgeb, M. Unser, T. Lasser

Proceedings Volume 7372, 737212 (2009) https://doi.org/10.1117/12.831813

KEYWORDS: Brain, Neuroimaging, Doppler effect, Brain mapping, Surgery, Visualization, Functional magnetic resonance imaging, Brain imaging, Microscopes, Magnetic resonance imaging

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Proceedings Article | 1 July 2009 Paper

Super-resolved position and orientation of fluorescent dipoles

François Aguet, Stefan Geissbühler, Iwan Märki, Theo Lasser, Michael Unser

Proceedings Volume 7367, 73670Y (2009) https://doi.org/10.1117/12.831488

KEYWORDS: Diffraction, Image acquisition, Super resolution, Luminescence, Microscopy, Signal to noise ratio, Interference (communication), Molecules, Detection and tracking algorithms, Model-based design

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Proceedings Article | 26 March 2008 Paper

Short basis functions for constant-variance interpolation

Philippe Thévenaz, Thierry Blu, Michael Unser

Proceedings Volume 6914, 69142L (2008) https://doi.org/10.1117/12.770234

KEYWORDS: Image registration, Data modeling, Image processing, Medical imaging, Stochastic processes, Biomedical optics, Binary data, Statistical modeling, Wavelets, Image segmentation

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Proceedings Article | 27 September 2007 Paper

Activelets and sparsity: a new way to detect brain activation from fMRI data

Ildar Khalidov, Dimitri Van De Ville, Jalal Fadili, Michael Unser

Proceedings Volume 6701, 67010Y (2007) https://doi.org/10.1117/12.734706

KEYWORDS: Wavelets, Functional magnetic resonance imaging, Associative arrays, Interference (communication), Signal to noise ratio, Brain activation, Signal detection, Statistical analysis, Hemodynamics, Neuroscience

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Proceedings Article | 27 September 2007 Paper

Construction of wavelet bases that mimic the behaviour of some given operator

Ildar Khalidov, Dimitri Van De Ville, Thierry Blu, Michael Unser

Proceedings Volume 6701, 67010S (2007) https://doi.org/10.1117/12.734606

KEYWORDS: Wavelets, Filtering (signal processing), Signal processing, Biomedical optics, Space operations, Calculus, Error control coding, Signal analysis, Edge detection, Multiscale representation

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Proceedings Article | 20 September 2007 Paper

A fast iterative thresholding algorithm for wavelet-regularized deconvolution

Cédric Vonesch, Michael Unser

Proceedings Volume 6701, 67010D (2007) https://doi.org/10.1117/12.733532

KEYWORDS: Wavelets, Deconvolution, Confocal microscopy, Microscopy, Algorithm development, Denoising, Luminescence, Magnetic resonance imaging, Biomedical optics, Surgery

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Proceedings Article | 11 July 2007 Paper

Logarithmic transformation technique for exact signal recovery in frequency-domain optical-coherence tomography

Chandra Sekhar, Rainer Leitgeb, Adrian Bachmann, Michael Unser

Proceedings Volume 6627, 662714 (2007) https://doi.org/10.1117/12.728378

KEYWORDS: Optical tomography, Tomography, Fourier transforms, Scattering, Eye, Mirrors, Retina, CCD cameras, Reconstruction algorithms, Spectrum analysis

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Proceedings Article | 20 March 2006 Paper

Improved MRSI with field inhomogeneity compensation

Ildar Khalidov, Dimitri Van De Ville, Mathews Jacob, François Lazeyras, Michael Unser

Proceedings Volume 6144, 614467 (2006) https://doi.org/10.1117/12.651868

KEYWORDS: Magnetic resonance imaging, Image segmentation, Scanners, Imaging spectroscopy, Magnetism, Reconstruction algorithms, Image processing algorithms and systems, Medical imaging, Spectroscopy, Biomedical optics

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Proceedings Article | 10 March 2006 Paper

A strategy based on maximum spanning trees to stitch together microscope images

Philippe Thévenaz, David Lambiel, Michael Unser

Proceedings Volume 6144, 61442A (2006) https://doi.org/10.1117/12.651320

KEYWORDS: Microscopes, Medical imaging, Image processing, Molybdenum, Image registration, Algorithm development

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Proceedings Article | 16 November 2005 Paper

Comparing algorithms for reconstructing digital off-axis Fresnel holograms

Michael Liebling, Michael Unser

Proceedings Volume 6016, 60160M (2005) https://doi.org/10.1117/12.631039

KEYWORDS: Signal to noise ratio, Digital holography, Reconstruction algorithms, Holograms, Gold, Amplifiers, Phase retrieval, 3D image reconstruction, Charge-coupled devices, Cameras

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Proceedings Article | 8 October 2005 Paper

Sub-resolution axial localization of nanoparticles in fluorescence microscopy

Francois Aguet, Dimitri Van De Ville, Michael Unser

Proceedings Volume 5860, 58600P (2005) https://doi.org/10.1117/12.643899

KEYWORDS: Particles, Point spread functions, Photons, Luminescence, Microscopy, Image acquisition, Microscopes, Charge-coupled devices, Nanoparticles, Biomedical optics

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Proceedings Article | 17 September 2005 Paper

Generalized biorthogonal Daubechies wavelets

Cedric Vonesch, Thierry Blu, Michael Unser

Proceedings Volume 5914, 59141X (2005) https://doi.org/10.1117/12.616536

KEYWORDS: Wavelets, Optical filters, Image processing, Image filtering, Wavelet transforms, Biological research, Chemical elements, Biomedical optics, Electronic filtering, Modulation

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Proceedings Article | 17 September 2005 Paper

Semi-orthogonal wavelets that behave like fractional differentiators

Dimitri Van De Ville, Thierry Blu, Brigitte Forster, Michael Unser

Proceedings Volume 5914, 59140C (2005) https://doi.org/10.1117/12.614791

KEYWORDS: Wavelets, Wavelet transforms, Smoothing, Signal analyzers, Lead, Signal analysis, Discrete wavelet transforms, Nonlinear filtering, Biomedical optics, Image analysis

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Proceedings Article | 17 September 2005 Paper

Generalized L-spline wavelet bases

Ildar Khalidov, Thierry Blu, Michael Unser

Proceedings Volume 5914, 59140F (2005) https://doi.org/10.1117/12.617123

KEYWORDS: Wavelets, Space operations, Filtering (signal processing), Signal processing, Chemical elements, Biomedical optics, Wavelet transforms, Signal analysis, Applied mathematics, Denoising

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Proceedings Article | 17 September 2005 Paper

Which wavelet bases are the best for image denoising?

Florian Luisier, Thierry Blu, Brigitte Forster, Michael Unser

Proceedings Volume 5914, 59140E (2005) https://doi.org/10.1117/12.614999

KEYWORDS: Wavelets, Wavelet transforms, Denoising, Image denoising, Signal to noise ratio, Interference (communication), Biomedical optics, Error analysis, Statistical analysis, Transform theory

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Proceedings Article | 13 April 2005 Paper

Continuous wavelet transform ridge extraction for spectral interferometry imaging

Michael Liebling, Thierry-Francois Bernhard, Adrian Bachmann, Luc Froehly, Theo Lasser, Michael Unser

Proceedings Volume 5690, (2005) https://doi.org/10.1117/12.591440

KEYWORDS: Continuous wavelet transforms, Computer programming, Interferometry, Multiplexing, Single mode fibers, Wavelets, Wavelet transforms, Fourier transforms, Charge-coupled devices, Biomedical optics

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