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20132019
most citedOn the linear convergence rates of exchange and continuous methods for total variation minimization

33 citations

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math.OC2019★ 33 cited

On the linear convergence rates of exchange and continuous methods for total variation minimization

Axel Flinth, Frédéric de Gournay, Pierre Weiss

We analyze an exchange algorithm for the numerical solution total-variation regularized inverse problems over the space M() of Radon measures on a subset of R d. Our main re…

math.OC2017

Multiview Attenuation Estimation and Correction

Valentin Debarnot, Jonas Kahn, Pierre Weiss

Measuring attenuation coefficients is a fundamental problem that can be solved with diverse techniques such as X-ray or optical tomography and lidar. We propose a novel approach ba…

math.OC2015

Variable density sampling based on physically plausible gradient waveform. Application to 3D MRI angiography

Nicolas Chauffert, Pierre Weiss, Marianne Boucher +2

Performing k-space variable density sampling is a popular way of reducing scanning time in Magnetic Resonance Imaging (MRI). Unfortunately, given a sampling trajectory, it is not c…

math.OC2014★ 10 cited

Gradient waveform design for variable density sampling in Magnetic Resonance Imaging

Nicolas Chauffert, Pierre Weiss, Jonas Kahn +1

Fast coverage of k-space is a major concern to speed up data acquisition in Magnetic Resonance Imaging (MRI) and limit image distortions due to long echo train durations. The hardw…

math.OC2013★ 10 cited

Image restoration using sparse approximations of spatially varying blur operators in the wavelet domain

Paul Escande, Pierre Weiss, Francois Malgouyres

Restoration of images degraded by spatially varying blurs is an issue of increasing importance in the context of photography, satellite or microscopy imaging. One of the main diffi…