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of 152
pro vyhledávání: '"Morigi, Serena"'
Sparse recovery principles play an important role in solving many nonlinear ill-posed inverse problems. We investigate a variational framework with support Oracle for compressed sensing sparse reconstructions, where the available measurements are non
Externí odkaz:
http://arxiv.org/abs/2404.06342
In this new computing paradigm, named quantum computing, researchers from all over the world are taking their first steps in designing quantum circuits for image processing, through a difficult process of knowledge transfer. This effort is named Quan
Externí odkaz:
http://arxiv.org/abs/2212.01041
We propose a non-convex variational model for the super-resolution of Optical Coherence Tomography (OCT) images of the murine eye, by enforcing sparsity with respect to suitable dictionaries learnt from high-resolution OCT data. The statistical chara
Externí odkaz:
http://arxiv.org/abs/2010.12576
Akademický článek
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Publikováno v:
In Applied Mathematics and Computation 15 August 2023 451
Publikováno v:
Conference: European Congress on Computational Methods in Applied Sciences and Engineering, 2018
We propose two new variational models aimed to outperform the popular total variation (TV) model for image restoration with L$_2$ and L$_1$ fidelity terms. In particular, we introduce a space-variant generalization of the TV regularizer, referred to
Externí odkaz:
http://arxiv.org/abs/1906.11827
Publikováno v:
Computer Methods in Biomechanics and Biomedical Engineering: Imaging & Visualization, 2018
We propose a new space-variant regularization term for variational image restoration based on the assumption that the gradient magnitudes of the target image distribute locally according to a half-Generalized Gaussian distribution. This leads to a hi
Externí odkaz:
http://arxiv.org/abs/1906.10517
Publikováno v:
In Signal Processing April 2023 205
The eigenfunctions of the Laplace Beltrami operator (Manifold Harmonics) define a function basis that can be used in spectral analysis on manifolds. In [21] the authors recast the problem as an orthogonality constrained optimization problem and pione
Externí odkaz:
http://arxiv.org/abs/1804.07620
Multi-degree splines are piecewise polynomial functions having sections of different degrees. For these splines, we discuss the construction of a B-spline basis by means of integral recurrence relations, extending the class of multi-degree splines th
Externí odkaz:
http://arxiv.org/abs/1709.04998