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, IVème rencontre francophone d'holographie numérique appliquée à la métrologie des uides, 2016.
, Ce cadre général a permis de proposer diérentes approches adaptées aux problématiques posées par cette technique d'imagerie non conventionnelle : la super-résolution, la reconstruction hors du champ du capteur, l'holographie couleur et enn la reconstruction quantitative d'objets de phase (c.a.d. transparents). Dans ce dernier cas, le problème de reconstruction consiste à estimer la transmittance complexe 2D des objets ayant absorbé et/ou déphasé l'onde d'éclairement lors de l'enregistrement de l'hologramme. Les méthodes proposées sont validées à l'aide de simulations numériques puis appliquées sur des données expérimentales issues de l'imagerie sans lentille ou de la microscopie holographique en ligne (imagerie cohérente en transmission, avec un objectif de microscope). Les applications vont de la reconstruction de mires de résolution opaques à la reconstruction d'objets biologiques (bactéries), en passant par la reconstruction de gouttelettes d'éther en évaporation dans le cadre d'une étude de la turbulence en mécanique des uides, Journées Imagerie Optique Non Conventionnelle, mars 2016, Paris. + + Résumé En imagerie numérique, les approches problèmes inverses régularisées reconstruisent une information d'intérêt à partir de mesures et d'un modèle de formation d'image