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Publications

Cette page présente les publications du Centre Borelli déposées sur le serveur HAL.

Affichage des publications 1051 à 1060 sur 1103 au total

Image Processing

A Novel Activity Detector Applied to Sentinel-1 for Surveillance

Change detection is the challenging process of identifying meaningful changes on an image sequence. In this work, we propose a new change detector for SAR images. We show that by controlling the a priori number of false alarms, one can detect events…

Axel Davy, Max Dunitz

39th IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2019) -

Fluid mechanics

Analysis of aortic pressure fields from 4D flow MRI in healthy volunteers: Associations with age and left ventricular remodeling

Background: Aging-related arterial stiffness is associated with substantial changes in global and local arterial pressures. The subsequent early return of reflected pressure waves leads to an elevated left ventricular (LV) afterload and ultimately…

Kevin Bouaou, Ioannis Bargiotas, Thomas Dietenbeck, Emilie Bollache, Gilles Soulat, Damian Craiem, Sophia Houriez-Gombaud-Saintonge, Alain de Cesare, Umit Genser, Alain Giron, Alban Redheuil, Emmanuel Messas, Didier Lucor, Elie Mousseaux, Nadjia Kachenoura

Journal of Magnetic Resonance Imaging -

Statistics

Categorized Bandits

We introduce a new stochastic multi-armed bandit setting where arms are grouped inside ``ordered'' categories. The motivating example comes from e-commerce, where a customer typically has a greater appetence for items of a specific well-identified…

Matthieu Jedor, Jonathan Louëdec, Vianney Perchet

Advances in Neural Information Processing Systems -

Mathematics

Interpolating between Optimal Transport and MMD using Sinkhorn Divergences

Comparing probability distributions is a fundamental problem in data sciences. Simple norms and divergences such as the total variation and the relative entropy only compare densities in a point-wise manner and fail to capture the geometric nature…

Jean Feydy, Thibault Séjourné, François-Xavier Vialard, Shun-Ichi Amari, Alain Trouvé, Gabriel Peyré

AISTATS -

Methodology

Patch redundancy in images: a statistical testing framework and some applications

In this work we introduce a statistical framework in order to analyze the spatial redundancy in natural images. This notion of spatial redundancy must be defined locally and thus we give some examples of functions (auto-similarity and template…

Valentin de Bortoli, Agnès Desolneux, Bruno Galerne, Arthur Leclaire

SIAM Journal on Imaging Sciences -

Image Processing

JPEG Grid Detection based on the Number of DCT Zeros and its Application to Automatic and Localized Forgery Detection

This work proposes a novel method for detecting JPEG compression, as well as its grid origin, based on counting the number of zeros in the DCT of 8 × 8 blocks. When applied locally, the same method can be used to detect grid alignment abnormalities…

Tina Nikoukhah, J Anger, T Ehret, Miguel Colom, J M Morel, R Grompone von Gioi

IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR) Workshops -