Publications (32)
Analysis and Synthesis Denoisers for Forward-Backward Plug-and-Play Algorithms
Matthieu Kowalski, Benoît Malézieux, Thomas Moreau +1
In this work we study the behavior of the forward-backward (FB) algorithm when the proximity operator is replaced by a sub-iterative procedure to approximate a Gaussian denoiser, i…
Africanus III. pfb-imaging -- a flexible radio interferometric imaging suite
Hertzog L. Bester, Jonathan S. Kenyon, Audrey Repetti +8
The popularity of the CLEAN algorithm in radio interferometric imaging stems from its maturity, speed, and robustness. While many alternatives have been proposed in the literature,…
Parallel faceted imaging in radio interferometry via proximal splitting (Faceted HyperSARA): I. Algorithm and simulations
Pierre-Antoine Thouvenin, Abdullah Abdulaziz, Arwa Dabbech +2
Upcoming radio interferometers are aiming to image the sky at new levels of resolution and sensitivity, with wide-band image cubes reaching close to the Petabyte scale for SKA. Mod…
A practical preconditioner for wide-field continuum imaging of radio interferometric data
Hertzog L. Bester, Audrey Repetti, Simon Perkins +2
The celebrated CLEAN algorithm has been the cornerstone of deconvolution algorithms in radio interferometry almost since its conception in the 1970s. For all its faults, CLEAN is r…
Computational time-of-flight diffuse optical tomography
Ashley Lyons, Francesco Tonolini, Alessandro Boccolini +4
Imaging through a strongly diffusive medium remains an outstanding challenge in particular in association with applications in biological and medical imaging. Here we propose a met…
Sparse interferometric Stokes imaging under polarization constraint (Polarized SARA)
Jasleen Birdi, Audrey Repetti, Yves Wiaux
We develop a novel algorithm for sparse Stokes parameters imaging in radio interferometry under the polarization constraint. The latter is a physical non-linear relation between th…