제어로봇시스템학회:학술대회논문집

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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Modified regularized Newton-Raphson algorithm for Electrical Impedance Tomography in Region Of Interest

  • Nam, Il-Hwan (Department of Electrical Engineering, KyungPook National University) ;
  • Kang, Byung-Chae (Department of Electrical Engineering, KyungPook National University) ;
  • Kim, Ji-Hun (Department of Electrical Engineering, KyungPook National University) ;
  • Choi, Bong-Yeol (Department of Electrical Engineering, KyungPook National University)
  • Published : 2003.10.22
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Abstract

Newton-Raphson is most used algorithm in EIT(electrical impedance tomography), cross-sectional distribution of resistivity is reconstructed by mean of both generating and sensing electrodes attached onto the surface of the object. EIT has been suffered from the severe ill-posedness which is caused by the inherent low sensitivity of boundary measurements to any changes of internal resistivity values. In this paper, we propose modified cost function and weighting factor that compensate for low sensitivity between boundary measurements and internal resistivity and improve performance of Newton-Raphson for EIT in region of interest.

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