Publications related to Iterative reconstruction

EEG Source Localization by Multi-Planar Analytic Sensing

Dimitri Nestor Alice Van De Ville, Thierry Blu, Clotaire Michel, Djano Kandaswamy

Source localization from EEG surface measurements is an important problem in neuro-imaging. We propose a new mathematical framework to estimate the parameters of a multidipole source model. To that aim, we perform 2-D analytic sensing in multiple planes. ...

IEEE2008

Dynamic PET Reconstruction Using Wavelet Regularization with Adapted Basis Functions

Michaël Unser, Dimitri Nestor Alice Van De Ville, Ildar Khalidov

Tomographic reconstruction from positron emission tomography (PET) data is an ill-posed problem that requires regularization. An attractive approach is to impose an

\ell_{ 1 }

-regularization constraint, which favors sparse solutions in the wavelet dom ...

Institute of Electrical and Electronics Engineers2008

Measurement of B(Ds+→μ+νμ)

Olivier Schneider, Aurelio Bay, Mingkui Wang, Chao Wang, Tagir Aushev, Vladislav Balagura, Sun Hee Kim

We present a measurement of the branching fraction B(Ds+→μ+νμ ) using a 548fb-1 data sample collected by the Belle experiment at the KEKB e+e- collider. The Ds momentum is determined by reconstruction of the system recoiling against DKγX in events of the t ...

2008

A spline-based forward model for Optical Diffuse Tomography

Michaël Unser, Jean-Charles Baritaux

Reconstruction algorithms for Optical Diffuse Tomography (ODT) rely heavily on fast and accurate forward models. Arbitrary geometries and boundary conditions need to be handled rigorously since they are the only input to the inverse problem. From this pers ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2008

A Spline-Based Forward Model for Optical Diffuse Tomography

Michaël Unser, Jean-Charles Baritaux

Reconstruction algorithms for Optical Diffuse Tomography (ODT) rely heavily on fast and accurate forward models. Arbitrary geometries and boundary conditions need to be handled rigorously since they are the only input to the inverse problem. From this pers ...

IEEE2008

The switching threshold reconstruction problem for piecewise-affine models of genetic regulatory networks

Giancarlo Ferrari Trecate

Recent advances of experimental techniques in biology have led to the production of enormous amounts of data on the dynamics of genetic regulatory networks. We present an approach for the identification of PieceWise-Affine (PWA) models of genetic regulator ...

2008

Cell culture imaging using microimpedance tomography

Philippe Renaud, Olof Pontus Linderholm

We present a novel, inexpensive, and fast microimpedance tomography system for two-dimensional imaging of cell and tissue cultures. The system is based on four-electrode measurements using 16 planar microelectrodes (5 mum x 4 mm) integrated into a culture ...

2008

Suprathermal electron studies in the TCV tokamak: design of a tomographic hard-X-ray spectrometer

Stefano Coda, Joan Decker, Silvano Gnesin

Electron cyclotron resonance heating (ECRH) and current drive (ECCD), disruptive events, and sawtooth activity are all known to produce suprathermal electrons in fusion devices, motivating increasingly detailed studies of the generation and dynamics of thi ...

2008

Dictionary preconditioning for greedy algorithms

Pierre Vandergheynst, Karin Schnass

This article presents an alteration of greedy algorithms like thresholding or (Orthogonal) Matching Pursuit which improves their performance in finding sparse signal representations in redundant dictionaries. These algorithms can be split into a sensing an ...

2008

Super-resolution from unregistered omnidirectional images

Pascal Frossard, Zafer Arican

This paper addresses the problem of super- resolution from low resolution spherical images that are not perfectly registered. Such a problem is typically en- countered in omnidirectional vision scenarios with re- duced resolution sensors in imperfect setti ...

2008

Iterative reconstruction

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EEG Source Localization by Multi-Planar Analytic Sensing

Dynamic PET Reconstruction Using Wavelet Regularization with Adapted Basis Functions

Measurement of B(Ds+→μ+νμ)

A spline-based forward model for Optical Diffuse Tomography

A Spline-Based Forward Model for Optical Diffuse Tomography

The switching threshold reconstruction problem for piecewise-affine models of genetic regulatory networks

Cell culture imaging using microimpedance tomography

Suprathermal electron studies in the TCV tokamak: design of a tomographic hard-X-ray spectrometer

Dictionary preconditioning for greedy algorithms

Super-resolution from unregistered omnidirectional images

A spline-based forward model for Optical Diffuse Tomography

A Spline-Based Forward Model for Optical Diffuse Tomography

The switching threshold reconstruction problem for piecewise-affine models of genetic regulatory networks

Cell culture imaging using microimpedance tomography

Suprathermal electron studies in the TCV tokamak: design of a tomographic hard-X-ray spectrometer

Dictionary preconditioning for greedy algorithms

Super-resolution from unregistered omnidirectional images

EEG Source Localization by Multi-Planar Analytic Sensing

Dynamic PET Reconstruction Using Wavelet Regularization with Adapted Basis Functions

Measurement of B(Ds+→μ+νμ)