eprintid: 398
rev_number: 6
eprint_status: archive
userid: 5
dir: disk0/00/00/03/98
datestamp: 2011-03-28
lastmod: 2013-07-04 11:26:12
status_changed: 2013-07-04 11:26:12
type: techreport
metadata_visibility: show
item_issues_count: 0
creators_name: Benedetti, Manual
creators_name: Casagranda, Aronne
creators_name: Donelli, Massimo
creators_name: Massa, Andrea
title: An Adaptive Multi-Scaling Imaging Technique Based on a Fuzzy-Logic Strategy for Dealing with the Uncertainty of Noisy Scattering Data
ispublished: pub
subjects: TU
full_text_status: public
keywords: Fuzzy-logic , inverse scattering , iterative multiscaling approach , microwave imaging
abstract: Inverse scattering data, even though collected in a controlled-environment, are usually corrupted by noise, which strongly affects the effectiveness of the reconstruction techniques because of the intrinsic ill-positioning of the problem. In order to limit the effects of the noise on the retrieval procedure and to fully exploit the information content available from the measurements, an innovative inversion scheme based on the integration of an adaptive multiscale procedure and a fuzzy-logic (FL)-based strategy is proposed. The main goal of the approach is to reduce the complexity of the problem as well as to improve the robustness of the inversion procedure allowing an accurate retrieval of the profile under test. The approach is based on an adaptive, coarse-to-fine successive representation of the unknown object obtained through a sequence of reconstructions where suitable weighting coefficients are defined through a FL. Key elements of the theoretical analysis are given and several numerical examples, concerned with synthetic and experimental test cases, illustrate the consequences of the proposed approach in terms of both resolution accuracy and robustness as well as computational costs. (c) 2007 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
date: 2007-11
date_type: published
institution: University of Trento
department: informaticat
refereed: TRUE
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citation:   Benedetti, Manual and Casagranda, Aronne and Donelli, Massimo and Massa, Andrea  (2007) An Adaptive Multi-Scaling Imaging Technique Based on a Fuzzy-Logic Strategy for Dealing with the Uncertainty of Noisy Scattering Data.  [Technical Report]     
document_url: http://www.eledia.org/students-reports/398/1/DISI-11-062.R125.pdf