Publications related to IMAGING - Administration

Undecimated Haar Thresholding For Poisson Intensity Estimation

Michaël Unser, Thierry Blu, Florian Luisier

We propose a novel algorithm for denoising Poisson-corrupted images, that performs a signal-adaptive thresholding of the undecimated Haar wavelet coefficients. A Poisson's unbiased MSE estimate is devised and adapted to arbitrary transform-domain pointwise ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2010

Undecimated Haar Thresholding for Poisson Intensity Estimation

Michaël Unser, Thierry Blu, Florian Luisier

We propose a novel algorithm for denoising Poisson-corrupted images, that performs a signal-adaptive thresholding of the undecimated Haar wavelet coefficients. A Poisson's unbiased MSE estimate is devised and adapted to arbitrary transform-domain pointwis ...

IEEE2010

Analytical Footprints: Compact Representation of Elementary Singularities in Wavelet Bases

Michaël Unser, Dimitri Nestor Alice Van De Ville, Thierry Blu

We introduce a family of elementary singularities that are point-Holder alpha-regular. These singularities are self-similar and are the Green functions of fractional derivative operators; i.e., by suitable fractional differentiation, one retrieves a Dirac ...

Institute of Electrical and Electronics Engineers2010

Efficient Approximate Scaling of Spherical Functions in the Fourier Domain With Generalization to Hyperspheres

Ivan Dokmanic

We propose a simple model for approximate scaling of spherical functions in the Fourier domain. The proposed scaling model is analogous to the scaling property of the classical Euclidean Fourier transform. Spherical scaling is used for example in spherical ...

Institute of Electrical and Electronics Engineers2010

Comparison of Deconvolution Software: A User Point of View—Part 2

Daniel Sage, Alessandra Griffa

Deconvolution is an image processing technique that restores the effective object representation [3] [4], allowing to improve images analysis steps such as segmentation [1] or colocalization study [2]. We performed several deconvolution tests on different ...

EMS2010

Comparative Analysis of Various Single-tone Frequency Estimation Techniques in High-order Instantaneous Moments Based Phase Estimation Method

Pramod Rastogi, Sai Siva Gorthi

For phase estimation in digital holographic interferometry, a high-order instantaneous moments (HIM) based method was recently developed which relies on piecewise polynomial approximation of phase and subsequent evaluation of the polynomial coefficients us ...

AIP Conf. Proc.2010

Accelerated Wavelet-Regularized Deconvolution For 3-D Fluorescence Microcopy

Michaël Unser, Matthieu Guerquin-Kern, Ilker Bayram, Raquel Terrés Cristofani

Modern deconvolution algorithms are often specified as minimization problems involving a non-quadratic regularization functional. When the latter is a wavelet-domain l(1)-norm that favors sparse solutions, the problem can be solved by a simple iterative sh ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2010

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

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

We present experimental investigation of a new reconstruction method for off-axis digital holographic microscopy (DHM). This method effectively suppresses the object auto-correlation, commonly called the zero-order term, from holographic measurements, ther ...

SPIE2010

Artifact-Free Reconstruction from Off-Axis Digital Holograms Through Nonlinear Filtering

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

We present experimental investigation of a new reconstruction method for off-axis digital holographic microscopy (DHM). This method effectively suppresses the object auto-correlation, commonly called the zero-order term, from holographic measurements, the ...

SPIE2010

Accelerated Wavelet-Regularized Deconvolution for 3-D Fluorescence Microcopy

Michaël Unser, Matthieu Guerquin-Kern, Ilker Bayram, Raquel Terrés Cristofani

Modern deconvolution algorithms are often specified as minimization problems involving a non-quadratic regularization functional. When the latter is a wavelet-domain

ℓ _{ 1 }

-norm that favors sparse solutions, the problem can be solved by a simple it ...

IEEE2010

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Undecimated Haar Thresholding For Poisson Intensity Estimation

Undecimated Haar Thresholding for Poisson Intensity Estimation

Analytical Footprints: Compact Representation of Elementary Singularities in Wavelet Bases

Efficient Approximate Scaling of Spherical Functions in the Fourier Domain With Generalization to Hyperspheres

Comparison of Deconvolution Software: A User Point of View—Part 2

Comparative Analysis of Various Single-tone Frequency Estimation Techniques in High-order Instantaneous Moments Based Phase Estimation Method

Accelerated Wavelet-Regularized Deconvolution For 3-D Fluorescence Microcopy

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

Artifact-Free Reconstruction from Off-Axis Digital Holograms Through Nonlinear Filtering

Accelerated Wavelet-Regularized Deconvolution for 3-D Fluorescence Microcopy

Undecimated Haar Thresholding For Poisson Intensity Estimation

Undecimated Haar Thresholding for Poisson Intensity Estimation

Efficient Approximate Scaling of Spherical Functions in the Fourier Domain With Generalization to Hyperspheres

Comparison of Deconvolution Software: A User Point of View—Part 2

Analytical Footprints: Compact Representation of Elementary Singularities in Wavelet Bases

Comparative Analysis of Various Single-tone Frequency Estimation Techniques in High-order Instantaneous Moments Based Phase Estimation Method

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

Accelerated Wavelet-Regularized Deconvolution For 3-D Fluorescence Microcopy

Artifact-Free Reconstruction from Off-Axis Digital Holograms Through Nonlinear Filtering

Accelerated Wavelet-Regularized Deconvolution for 3-D Fluorescence Microcopy