19 citations · 24 across the 5 of their papers we have counts for
5 papers
Grid is Good: Adaptive Refinement Algorithms for Off-the-Grid Total Variation Minimization
Axel Flinth, Frédéric de Gournay, Pierre Weiss
We propose an adaptive refinement algorithm to solve total variation regularized measure optimization problems. The method iteratively constructs dyadic partitions of the unit cube…
Bayesian Optimization of Sampling Densities in MRI
Alban Gossard, Frédéric de Gournay, Pierre Weiss
Data-driven optimization of sampling patterns in MRI has recently received a significant attention.Following recent observations on the combinatorial number of minimizers in off-th…
Spurious minimizers in non uniform Fourier sampling optimization
Frédéric de Gournay, Alban Gossard, Pierre Weiss
A recent trend in the signal/image processing literature is the optimization of Fourier sampling schemes for specific datasets of signals. In this paper, we explain why choosing op…
The case of Neumann, Robin and periodic lateral condition for the semi infinite generalized Graetz problem and applications
Valention Debarnot, Jérôme Fehrenbach, Frédéric de Gournay +1
The Graetz problem is a convection-diffusion equation in a pipe invariant along a direction. The contribution of the present work is to propose a mathematical analysis of the Neuma…
Uniform stability estimates for the discrete Calderon problems
S. Ervedoza, F. de Gournay
In this article, we focus on the analysis of discrete versions of the Calderon problem in dimension d \geq 3. In particular, our goal is to obtain stability estimates for the discr…