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Research Output 2012 2019

2019

A faceted prior for scalable wideband computational imaging

Thouvenin, P-A., Abdulaziz, A., Jiang, M., Repetti, A. & Wiaux, Y., 2 Jul 2019.

Research output: Contribution to conferenceAbstract

Open Access
File
astronomy
radio
state of the art
norm

A Faceted Prior for Scalable Wideband Imaging: Application to Radio Astronomy

Thouvenin, P-A., Abdulaziz, A., Jiang, M., Repetti, A. & Wiaux, Y., 17 Sep 2019, (Accepted/In press) 2019 IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP). Guadeloupe, West Indies

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Radio astronomy
Imaging techniques
Convex optimization
Telescopes
Frequency bands

A forward-backward algorithm for reweighted procedures: Application to radio-astronomical imaging

Repetti, A. & Wiaux, Y., 18 Oct 2019, (Submitted). 5 p.

Research output: Contribution to conferencePaper

File
composite functions
iteration
critical point

Building firmly nonexpansive convolutional neural networks

Terris, M., Repetti, A., Pesquet, J-C. & Wiaux, Y., Oct 2019, (Submitted). 5 p.

Research output: Contribution to conferencePaper

Neural networks
Image denoising
Image processing

Computational time-of-flight diffuse optical tomography

Lyons, A., Boccolini, A., Tonolini, F., Repetti, A., Henderson, R., Wiaux, Y. & Faccio, D. F. A., Aug 2019, In : Nature Photonics. 13, 8, p. 575-579 5 p.

Research output: Contribution to journalArticle

Open Access
Optical tomography
tomography
Imaging techniques
photons
mean free path

Deep Post-Processing for Sparse Image Deconvolution

Terris, M., Abdulaziz, A., Dabbech, A., Jiang, M., Repetti, A., Pesquet, J-C. & Wiaux, Y., 1 Jul 2019. 2 p.

Research output: Contribution to conferenceAbstract

Open Access
File
Deconvolution
Astronomy
Processing
Scalability
Imaging techniques

Fast Spatially Coherent Fiber Orientation Estimation in Diffusion MRI from kq-Space Sampling

Pesce, M., Repetti, A. & Wiaux, Y., 16 Sep 2019, (Accepted/In press). 5 p.

Research output: Contribution to conferencePaper

Fiber reinforced materials
Magnetic resonance imaging
Sampling
Inverse problems
Brain

Greedy Approximate Projection for Magnetic Resonance Fingerprinting with Partial Volumes

Duarte Coello, R. D. J., Repetti, A., Gómez, P. A., Davies, M. E. & Wiaux, Y., 22 Jul 2019, (Accepted/In press) In : Inverse Problems. 32 p.

Research output: Contribution to journalArticle

File
Magnetic resonance
Tissue
Data storage equipment
Recovery

Hyperspectral Uncertainty Quantification by Optimization

Abdulaziz, A., Repetti, A. & Wiaux, Y., 1 Jul 2019, SPARS 2019. 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Open Access
File
Convex optimization
Imaging techniques
Uncertainty

Parallel Faceted Imaging in Radio Interferometry via proximal splitting (Faceted HyperSARA)

Thouvenin, P-A., Abdulaziz, A., Jiang, M., Dabbech, A., Repetti, A. & Wiaux, Y., 8 Aug 2019, (In preparation) In : Monthly Notices of the Royal Astronomical Society.

Research output: Contribution to journalArticle

interferometry
flat surfaces
broadband
dynamic range
sky
Open Access
File
Convex optimization
Inverse problems
Imaging techniques
Decision theory
Astronomy

Self-calibration for Magnetic Resonance Fingerprinting

Duarte Coello, R. D. J., Repetti, A. & Wiaux, Y., Feb 2019. 1 p.

Research output: Contribution to conferencePaper

Open Access
File
magnetic resonance
acquisition
upstream
artifacts
coils

Self Direction-Dependent Calibration For Wideband Radio-Interferometric Imaging

Dabbech, A., Repetti, A. & Wiaux, Y., Feb 2019. 1 p.

Research output: Contribution to conferencePaper

Open Access
File
radio telescopes
sky
broadband
optimization
sensitivity

Uncertainty Quantification in Astro-Imaging by Optimisation

Repetti, A., Pereyra, M. A. & Wiaux, Y., Feb 2019. 1 p.

Research output: Contribution to conferencePaper

Open Access
File
Imaging techniques
Medical imaging
Inverse problems
Uncertainty
2018

Diffuse time-of-flight imaging with a single-photon camera

Lyons, A., Boccolini, A., Tonolini, F., Repetti, A., Chen, Z., Leach, J., Henderson, R., Wiaux, Y. & Faccio, D., 2018, Computational Optical Sensing and Imaging 2018. Optical Society of America, CM2E.6

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Optical resolving power
Image resolution
Photons
Cameras
Imaging techniques

Facet-Based Regularization for Scalable Radio-Interferometric Imaging

Naghibzadeh, S., Repetti, A., van der Veen, A-J. & Wiaux, Y., 18 May 2018, (Accepted/In press) EUSIPCO 2018. IEEE

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Open Access
File
Imaging techniques
Radio telescopes
Interferometry
Data storage equipment

Fast kq-Space Sampling with Motion-Induced Phase in Diffusion MRI

Pesce, M., Repetti, A. & Wiaux, Y., 30 Aug 2018, 2018 IEEE 10th Sensor Array and Multichannel Signal Processing Workshop (SAM). IEEE, p. 420-424 5 p. (Sensor Array and Multichannel Signal Processing Workshop (SAM)).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Open Access
File
acquisition
sampling
fibers
contamination
configurations

Scalable Algorithm for Polarization Constrained Sparse Interferometric Stokes Imaging

Birdi, J., Repetti, A. & Wiaux, Y., 30 Aug 2018, 2018 IEEE 10th Sensor Array and Multichannel Signal Processing Workshop (SAM). IEEE, p. 465-469 5 p. (Sensor Array and Multichannel Signal Processing Workshop (SAM)).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Open Access
File
radio interferometers
Very Large Array (VLA)
polarization
astrophysics
sampling

Sparse interferometric Stokes imaging under polarization constraint (Polarized SARA)

Birdi, J., Repetti, A. & Wiaux, Y., 21 Aug 2018, In : Monthly Notices of the Royal Astronomical Society. 478, 4, p. 4442-4463 22 p.

Research output: Contribution to journalArticle

Open Access
File
polarization
event horizon
cotton
interferometry
projection

Time-Regularized Blind Deconvolution Approach for Radio Interferometry

Thouvenin, P-A., Repetti, A., Dabbech, A. & Wiaux, Y., 2018, 10th IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM 2018). IEEE, p. 475-479 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Open Access
File
Deconvolution
Interferometry
Calibration
Image reconstruction
Radio telescopes

Uncertainty Quantification in Imaging: When Convex Optimization Meets Bayesian Analysis

Repetti, A., Pereyra, M. A. & Wiaux, Y., 18 May 2018, (Accepted/In press) EUSIPCO 2018. IEEE, 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Open Access
File
Convex optimization
Imaging techniques
Inverse problems
Geometry
Uncertainty
2017

A non-convex perspective on calibration and imaging in radio interferometry

Repetti, A. & Wiaux, Y., 4 Apr 2017, (Accepted/In press) SPIE Optical Engineering + Applications: Wavelets and Sparsity XVII. SPIE, p. 1-13 13 p. 10394-67

Research output: Chapter in Book/Report/Conference proceedingConference contribution

interferometry
radio astronomy
image reconstruction
dynamic range
high resolution

A regularized tri-linear approach for optical interferometric imaging

Birdi, J., Repetti, A. & Wiaux, Y., 11 Jun 2017, In : Monthly Notices of the Royal Astronomical Society. 468, 1, p. 1142–1155 14 p.

Research output: Contribution to journalArticle

Open Access
File
Imaging techniques
Glossaries
Power spectrum
Inverse problems
Interferometry

Joint imaging and DDEs calibration for radio interferometry

Repetti, A., Birdi, J. & Wiaux, Y., 30 Jan 2017, BASP Frontiers Workshop 2017. 1 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Open Access
File
Interferometry
Calibration
Imaging techniques
Glossaries
Antenna arrays

Non-convex blind deconvolution approach for sparse radio-interferometric imaging

Repetti, A., Birdi, J. & Wiaux, Y., 5 Jun 2017, 6th Signal Processing with Adaptive Sparse Structured Representations workshop 2017. p. 1-2 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Open Access
File
image reconstruction
astronomy
dynamic range
interferometry
high resolution
Open Access
File
optimization
sky
radio telescopes
antenna arrays
visibility

Sparsity regularized optical interferometric imaging

Birdi, J., Repetti, A. & Wiaux, Y., 2017, Proceedings of SPARS 2017. p. 1-2 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Open Access
File
norms
acquisition
interferometry
recovery
optimization
2016

A block coordinate variable metric forward–backward algorithm

Chouzenoux, E., Pesquet, J-C. & Repetti, A., 10 Feb 2016, In : Journal of Global Optimization. p. 1-29 29 p.

Research output: Contribution to journalArticle

Metric
Differentiable
Objective function
Optimization Problem
Phase Retrieval

Scalable splitting algorithms for big-data interferometric imaging in the SKA era

Onose, A., Carrillo, R. E., Repetti, A., McEwen, J. D., Thiran, J-P., Pesquet, J-C. & Wiaux, Y., 11 Nov 2016, In : Monthly Notices of the Royal Astronomical Society. 462, 4, p. 4314-4335 22 p.

Research output: Contribution to journalArticle

Open Access
File
Convex optimization
Scalability
Imaging techniques
Radio telescopes
Image reconstruction
2015

A Class of Randomized Primal-Dual Algorithms for Distributed Optimization

Pesquet, J-C. & Repetti, A., Dec 2015, In : Journal of Nonlinear and Convex Analysis. 16, 12, p. 2453-2490 38 p.

Research output: Contribution to journalArticle

Open Access

A Nonconvex Regularized Approach for Phase Retrieval

Repetti, A., Chouzenoux, E. & Pesquet, J-C., 29 Jan 2015, 2014 IEEE International Conference on Image Processing (ICIP). IEEE, p. 1753-1757 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Image reconstruction
Imaging systems
Costs

A parallel block-coordinate approach for primal-dual splitting with arbitrary random block selection

Repetti, A., Chouzenoux, E. & Pesquet, J-C., 28 Dec 2015, 2015 23rd European Signal Processing Conference (EUSIPCO). IEEE, p. 235-239 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Data storage equipment
Mathematical operators

A random block-coordinate primal-dual proximal algorithm with application to 3D mesh denoising

Repetti, A., Chouzenoux, E. & Pesquet, J-C., 6 Aug 2015, 2015 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE, p. 3561-3565 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Inverse problems
Computer vision
Learning systems
Composite materials

Euclid in a Taxicab: Sparse Blind Deconvolution with Smoothed ℓ1/ℓ2 Regularization

Repetti, A., Pham, M. Q., Duval, L., Chouzenoux, E. & Pesquet, J-C., May 2015, In : IEEE Signal Processing Letters. 22, 5, p. 539-543 5 p.

Research output: Contribution to journalArticle

Taxicabs
Deconvolution
Invariance
Restoration

Proximal Operator of Quotient Functions with Application to a Feasibility Problem in Query Optimization

Moerkotte, G., Montag, M., Repetti, A. & Steidl, G., Sep 2015, In : Journal of Computational and Applied Mathematics. 285, C, p. 243-255 13 p.

Research output: Contribution to journalArticle

Query Optimization
Quotient
Proximity
Shrinkage
Operator

Proximal primal-dual optimization methods

Repetti, A., Chouzenoux, E. & Pesquet, J-C., Jan 2015, Proceedings of international BASP Frontiers workshop. BASP, p. 25 1 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Un petit tutoriel sur les méthodes primales-duales pour l'optimisation convexe

Translated title of the contribution: A small tutorial on primal-dual methods for convex optimisationRepetti, A., Chouzenoux, E. & Pesquet, J-C., Sep 2015.

Research output: Contribution to conferencePaper

Open Access
File
2014

A preconditioned Forward-Backward approach with application to large-scale nonconvex spectral unmixing problems

Repetti, A., Chouzenoux, E. & Pesquet, J-C., 2014, 39th IEEE International Conference on Acoustics, Speech, and Signal Processing.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Variable Metric Forward–Backward Algorithm for Minimizing the Sum of a Differentiable Function and a Convex Function

Chouzenoux, E., Pesquet, J-C. & Repetti, A., Jul 2014, In : Journal of Optimization Theory and Applications. 162, 1, p. 107–132 26 p.

Research output: Contribution to journalArticle

Convex function
Differentiable
Metric
G-function
Image Reconstruction
2013

Reconstruction d'image en présence de bruit gaussien dépendant par un algorithme Explicite-Implicite à métrique variable

Translated title of the contribution: Image reconstruction in presence of signal-dependent Gaussian noise using a variable-metric forward-backward algorithmRepetti, A., Chouzenoux, E. & Pesquet, J-C., Sep 2013.

Research output: Contribution to conferencePaper

2012

A Penalized Weighted Least Squares Approach for Restoring Data Corrupted with Signal-Dependent Noise

Repetti, A., Chouzenoux, E. & Pesquet, J-C., Aug 2012, 20th European Signal Processing Conference: EUSIPCO 2012. p. 1553-1557

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Open Access