62 citations · 214 across the 25 of their papers we have counts for
3 papers · 1 filter
Visibility Interpolation in Solar Hard X-ray Imaging: Application to RHESSI and STIX
Emma Perracchione, Paolo Massa, Anna Maria Massone +1
Space telescopes for solar hard X-ray imaging provide observations made of sampled Fourier components of the incoming photon flux. The aim of this study is to design an image recon…
Predictive risk estimation for the Expectation Maximization algorithm with Poisson data
Paolo Massa, Federico Benvenuto
In this work, we introduce a novel estimator of the predictive risk with Poisson data, when the loss function is the Kullback-Leibler divergence, in order to define a regularizatio…
MEM_GE: a new maximum entropy method for image reconstruction from solar X-ray visibilities
Paolo Massa, Richard Schwartz, A Kim Tolbert +4
Maximum Entropy is an image reconstruction method conceived to image a sparsely occupied field of view and therefore particularly appropriate to achieve super-resolution effects. A…