Microwave imaging : reconstruction from experimental data using conjugate gradient and enhancement by edge-preserving regularization

P. Lobel 1 Ch. Pichot 1 Laure Blanc-Féraud 2 Michel Barlaud 3
2 MORPHEME - Morphologie et Images
CRISAM - Inria Sophia Antipolis - Méditerranée , IBV - Institut de Biologie Valrose : U1091, SIS - Signal, Images et Systèmes
Abstract : A method for reconstructing the complex permittivity profile of lossy dielectric objects from measured scattered far-field data is presented. An iterative reconstruction algorithm based on a conjugate gradient method is derived from an integral representation of the electric field and applying a moment method solution. Results obtained from experimental data are shown for both known and unknown targets. Then, a new regularization procedure is developed to enhance the quality of the reconstruction. This method, based on a Markov random fields approach, models the object to be reconstructed by homogeneous areas separated by borderlike discontinuities. Finally, the enhancement is shown by the reconstruction of a polystyrene square cylinder.
Type de document :
Article dans une revue
International Journal of Imaging Systems and Technology, Wiley, 1997, 8 (4), pp.337-342. <10.1002/(SICI)1098-1098(1997)8:4<337::AID-IMA1>3.0.CO;2-B>


https://hal.archives-ouvertes.fr/hal-00986374
Contributeur : Jean-Pierre Damiano <>
Soumis le : vendredi 2 mai 2014 - 11:51:02
Dernière modification le : mercredi 14 décembre 2016 - 01:06:16

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P. Lobel, Ch. Pichot, Laure Blanc-Féraud, Michel Barlaud. Microwave imaging : reconstruction from experimental data using conjugate gradient and enhancement by edge-preserving regularization. International Journal of Imaging Systems and Technology, Wiley, 1997, 8 (4), pp.337-342. <10.1002/(SICI)1098-1098(1997)8:4<337::AID-IMA1>3.0.CO;2-B>. <hal-00986374>

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