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Frédéric Champagnat

2 papers indexed

openalexExperiments in Fluids2026-07-23

The VICCTOR algorithm for 3D Particle Tracking Velocimetry: an efficient ghostbuster-type approach

J. Le Bris, Maximilien Hebey, Benjamin Leclaire, Philippe Cornic, Frédéric Champagnat, Benjamin Musci, et al.

Abstract A new algorithm for two-pulse particle tracking velocimetry (PTV) is introduced, which makes use of recent advances in 3D particle reconstruction, matching and position optimization. Contrary to most current state-of-the-art approaches, e.g. Godbersen et al. (2024), whic…

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arxivphysics.opticseess.SP2026-07-10

Co-design approach to aperture masking for imaging through atmospheric turbulence

Olivier Herscovici-Schiller, Laurent M. Mugnier, Alice Fontbonne, Pauline Trouvé-Peloux, Frédéric Champagnat, Yann Lucas, et al.

Aperture masking interferometry is a technique originally designed to alleviate the influence of atmospheric turbulence on images recorded on ground-based telescopes. In this communication, we explore the optimization of the aperture mask by an optical/digital co-design approach…

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