Summary
International Technical Conference on Circuits/Systems, Computers and Communications
2008
Session Number:G3
Session:
Number:G3-2
The modified Newton-Raphson algorithm using Region of Interest in EIT
Jeong-Min Kang, Min Seong Kim, Jae-Hyoung Kim, Ji-Hoon Kim, Chan Yong Kim, Bong-Yeol Choi, Sin Kim, Jeong Seong Lee, Kyung Youn Kim,
pp.-
Publication Date:2008/7/7
Online ISSN:2188-5079
Summary:
Electrical impedance tomography (EIT) reconstructs internal resistivity distribution using the various reconstruction methods. In reconstruction methods for EIT, the modified Newton-Raphson (mNR) method is known as nonlinear least-square method which has relatively good performance. But mNR does not obtain a satisfactory image due to ill-conditioning of Hessian matrix. To solve this problem, many methods have been developed and researched. This paper proposes a new mNR, which improves a reconstruction image in point of shape and resistivity, using assumed value and region of interest (ROI).