3 papers
math.NA2023
Exact sinogram: an analytical approach to the Radon transform of phantoms
Monica Dessole, Marta Gatto, Davide Poggiali +1
Phantoms can serve as a gold standard for the validation of MRI numerical methods. In some special cases, it is possible to compute analytically the Radon transform, or sinogram, o…
math.NA2021
The Lawson-Hanson Algorithm with Deviation Maximization: Finite Convergence and Sparse Recovery
Monica Dessole, Marco Dell'Orto, Fabio Marcuzzi
In this work we apply the "deviation maximization", a new column selection strategy, to the Lawson-Hanson algorithm for the solution of NonNegative Least Squares (NNLS), devising a…
math.NA2021
Deviation Maximization for Rank-Revealing QR Factorizations
Monica Dessole, Fabio Marcuzzi
In this paper we introduce a new column selection strategy, named here ``Deviation Maximization", and apply it to compute rank-revealing QR factorizations as an alternative to the…