Astronomy is a field of study in which optical advances have driven the design of new generations of instruments always more efficient and dedicated to specific tasks. In particular, the detection of exoplanets and their characterization by direct …
Dans différents domaines de l'imagerie, il est nécessaire de détecter un signal faible correspondant à un motif connu superposé à un fond fort et spatialement corrélé. Cette problématique est rencontrée par exemple en astronomie lors de la détection …
We have recently introduced a new method dedicated to source detection from angular differential imaging (ADI) data: PACO (for PAtch COvariances). Data reduction in ADI is challenging because the faint point sources are hidden in a stronger …
We have recently introduced a new method dedicated to source detection from angular differential imaging (ADI) data: PACO (for PAtch COvariances). Data reduction in ADI is challenging because the faint point sources are hidden in a stronger …
Detection of exoplanets by direct imaging is a very active research topic in astronomy for the characterization of young and massive objects. The very high contrast between the host star and its companions makes the detection particularly …
In-line digital holography is a simple and powerful tool to image absorbing and/or phase objects in numerous fields such as crystallography, biology or fluid mechanics. Nevertheless, this kind of interference imaging technique leads to a loss of the …
Nous proposons dans cet article d'aborder la méthodologie d'élaboration d'une approche *problèmes inverses* pour la reconstruction d'objets de phase et/ou absorbants à partir d'hologrammes acquis en ligne. Après une introduction au contexte de cette …