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Image Reconstruction with Prior Information in Electrical Resistance Tomography

  • Kim, Bong Seok (Clean Energy Convergence and Integration Center for Human Resources Training and Education, Jeju National University) ;
  • Kim, Sin (Department of Nuclear and Energy Engineering, Jeju National University) ;
  • Kim, Kyung Youn (Department of Electronic Engineering, Jeju National University)
  • Received : 2014.01.10
  • Accepted : 2014.01.20
  • Published : 2014.03.31

Abstract

Electrical resistance tomography (ERT) has high temporal resolution characteristics therefore it is used as an alternative technique to visualize two-phase flows. The image reconstruction in ERT is highly non-linear and ill-posed hence it suffers from poor spatial resolution. In this paper, the inverse problem is solved with homogeneous data used as a prior information to reduce the condition number of the inverse algorithm and improve the spatial resolution. Numerical experiments have been carried out to illustrate the performance of the proposed method.

Keywords

electrical resistance tomography;two-phase flow;prior information;ill-posedness;Gauss-Newton method

Acknowledgement

Supported by : Jeju National University

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