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Article Dans Une Revue International Journal of Imaging Systems and Technology Année : 1997

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

Résumé

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.

Dates et versions

hal-00986374 , version 1 (02-05-2014)

Identifiants

Citer

P. Lobel, Christian 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, 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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