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Hybrid topological derivative and gradient-based methods for electrical impedance tomography

Carpio Rodríguez, Ana María and Rapun, M.L. (2012) Hybrid topological derivative and gradient-based methods for electrical impedance tomography. Inverse problems, 28 (9). pp. 1-22. ISSN 0266-5611

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Official URL: http://iopscience.iop.org/0266-5611/28/9/095010

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Abstract

We present a technique to reconstruct the electromagnetic properties of a medium or a set of objects buried inside it from boundary measurements when applying electric currents through a set of electrodes. The electromagnetic parameters may be recovered by means of a gradient method without a priori information on the background. The shape, location and size of objects, when present, are determined by a topological derivative-based iterative procedure. The combination of both strategies allows improved reconstructions of the objects and their properties, assuming a known background.

Item Type:Article
Uncontrolled Keywords:Boundary measurements; shape reconstruction; inverse problems; low-frequency; conductivity; identification; permittivity
Subjects:Sciences > Physics > Electromagnetism
ID Code:17109
Deposited On:15 Nov 2012 10:47
Last Modified:07 Feb 2014 09:41

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