2 papers
astro-ph.SR2024
RIS: Regularized Imaging Spectroscopy for STIX on-board Solar Orbiter
Anna Volpara, Alessandro Lupoli, Frank Filbir +3
Imaging spectroscopy, i.e., the generation of spatially resolved count spectra and of cubes of count maps at different energies, is one of the main goals of solar hard X-ray missio…
math.NA2024
Wirtinger gradient descent methods for low-dose Poisson phase retrieval
Benedikt Diederichs, Frank Filbir, Patricia Römer
The problem of phase retrieval has many applications in the field of optical imaging. Motivated by imaging experiments with biological specimens, we primarily consider the setting…