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EnglishThe problem of imaging two-dimensional “non-sparse” scatterers with piecewise-constant contrast is solved through an innovative total-variation compressive sensing (TV-CS) technique. Under Born approximation (BA), the time-harmonic two-dimensional inverse scattering problem is reformulated into an equivalent Augmented Lagrangian one according to the TV-CS formulation. The resulting unconstrained functional is then minimized by means of a deterministic alternating direction algorithm. Selected results from a numerical assessment are discussed to give the interested reader some insights on the accuracy, the flexibility, the robustness, and the efficiency of the TV-CS inversion scheme also in comparison with available implementations of state-of-the-art inversion methods still formulated within the BA
Compressive sensing imaging of non-sparse 2D scatterers by a total-variation approach within the Born approximation / Oliveri, Giacomo; Anselmi, Nicola; Massa, Andrea. - In: IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION. - ISSN 0018-926X. - 62:10(2014), pp. 5157-5170. [10.1109/TAP.2014.2344673]
| Titolo: | Compressive sensing imaging of non-sparse 2D scatterers by a total-variation approach within the Born approximation | |
| Autori: | Oliveri, Giacomo; Anselmi, Nicola; Massa, Andrea | |
| Autori Unitn: | ||
| Titolo del periodico: | IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | |
| Anno di pubblicazione: | 2014 | |
| Numero e parte del fascicolo: | 10 | |
| Codice identificativo Scopus: | 2-s2.0-84907872847 | |
| Codice identificativo WOS: | WOS:000343608600025 | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1109/TAP.2014.2344673 | |
| Handle: | http://hdl.handle.net/11572/100788 | |
| Citazione: | Compressive sensing imaging of non-sparse 2D scatterers by a total-variation approach within the Born approximation / Oliveri, Giacomo; Anselmi, Nicola; Massa, Andrea. - In: IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION. - ISSN 0018-926X. - 62:10(2014), pp. 5157-5170. [10.1109/TAP.2014.2344673] | |
| Appare nelle tipologie: | 03.1 Articolo su rivista (Journal article) |
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http://hdl.handle.net/11572/100788
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