We consider the problem of electrical impedance tomography where conductivity distribution in a domain is to be reconstructed from boundary measurements of voltage and currents. It is well-known that this problem is highly illposed. In this work, we propose the use of the Mumford-Shah functional, developed for segmentation and denoising of images, as a regularization. After establishing existence properties of the resulting variational problem, we proceed by demonstrating the approach in several numerical examples. Our results indicate that this is an effective approach for overcoming the illposedness. Moreover, it has the capability of enhancing the reconstruction while at the same time segmenting the conductivity image.
Mots clés : electrical impedance tomography, inverse problems for elliptic equations, regularization of illposed problem, image enhancement
@article{COCV_2001__6__517_0,
author = {Rondi, Luca and Santosa, Fadil},
title = {Enhanced electrical impedance tomography via the {Mumford-Shah} functional},
journal = {ESAIM: Control, Optimisation and Calculus of Variations},
pages = {517--538},
publisher = {EDP-Sciences},
volume = {6},
year = {2001},
zbl = {0989.35136},
language = {en},
url = {http://archive.numdam.org/item/COCV_2001__6__517_0/}
}
TY - JOUR AU - Rondi, Luca AU - Santosa, Fadil TI - Enhanced electrical impedance tomography via the Mumford-Shah functional JO - ESAIM: Control, Optimisation and Calculus of Variations PY - 2001 SP - 517 EP - 538 VL - 6 PB - EDP-Sciences UR - http://archive.numdam.org/item/COCV_2001__6__517_0/ LA - en ID - COCV_2001__6__517_0 ER -
%0 Journal Article %A Rondi, Luca %A Santosa, Fadil %T Enhanced electrical impedance tomography via the Mumford-Shah functional %J ESAIM: Control, Optimisation and Calculus of Variations %D 2001 %P 517-538 %V 6 %I EDP-Sciences %U http://archive.numdam.org/item/COCV_2001__6__517_0/ %G en %F COCV_2001__6__517_0
Rondi, Luca; Santosa, Fadil. Enhanced electrical impedance tomography via the Mumford-Shah functional. ESAIM: Control, Optimisation and Calculus of Variations, Tome 6 (2001), pp. 517-538. http://archive.numdam.org/item/COCV_2001__6__517_0/
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