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Abstract
This paper introduces a constructive method for approximating relative continuum measurements in two-dimensional electrical impedance tomography based on data originating from either the point electrode model or the complete electrode model. The upper bounds for the corresponding approximation errors explicitly depend on the number (and size) of the employed electrodes as well as on the regularity of the continuum current that is mimicked. In particular, if the input current and the object boundary are infinitely smooth, the discrepancy associated with the point electrode model converges to zero faster than any negative power of the number of electrodes. The results are first proven for the unit disk via trigonometric interpolation and quadrature rules, and they are subsequently extended to more general domains with the help of conformal mappings.
Original language | English |
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Publisher | arXiv |
Number of pages | 19 |
DOIs | |
Publication status | Published - 2020 |
Keywords
- Electrical impedance tomography
- Electrode placement
- Interpolation
- Quadrature rule
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Aalto University
Henrik Garde (Visiting researcher)
1 Feb 2019 → 31 Dec 2019Activity: Visiting another research institution