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Image reconstruction in 3D magnetic induction tomography using a FEM forward model.

Soleimani, M. and Lionheart, W. R. B. and Peyton, A. J. and Ma, X. (2003) Image reconstruction in 3D magnetic induction tomography using a FEM forward model. In: 3rd World Congress on Industrial Process Tomography, 2003-09-022003-09-05, Banff, Canada.

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Abstract

The inverse problem in 3D eddy current imaging is ill-posed and non-linear. The most commonly used image reconstruction algorithms for electrical imaging are based on a linear approximation (the Jacobian Matrix). We start with an initial conductivity distribution. The forward problem is solved and the predicted voltages compared with the calculated voltages from the Finite Element model. The conductivity is then updated using a regularised inverse of the Jacobian. The process is repeated until the predicted voltages from the finite element method agree with the calculated voltages from the finite element model. In this study we present the validity range of a linear inverse problem based on analysis of the Jacobian matrix.

Item Type: Conference or Workshop Item (Paper)
Journal or Publication Title: 3rd World Congress on Industrial Process Tomography
Uncontrolled Keywords: Image reconstruction ; Linear and non-linear inverse problems ; Magnetic Induction Tomography ; Electromagnetics
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Departments: Faculty of Science and Technology > Engineering
ID Code: 34954
Deposited By: Dr Xiandong Ma
Deposited On: 20 Dec 2010 15:07
Refereed?: Yes
Published?: Published
Last Modified: 24 Jan 2014 06:14
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/34954

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