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http://dx.doi.org/10.5573/ieie.2017.54.8.99

Enhancement of Image Reconstruction Using Region of Interest Method Based on Adaptive Threshold Value in Electrical Impedance Tomography  

Kim, Chang Il (Faculty of Lift Engineering, Korea Lift College)
Kim, Bong Seok (Faculty of Lift Engineering, Korea Lift College)
Kim, Kyung Youn (Department of Electronic Engineering, Jeju National University)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.54, no.8, 2017 , pp. 99-106 More about this Journal
Abstract
Electrical impedance tomography is a nondestructive imaging modality in which the internal resistivity distribution is reconstructed based on the injected currents and measured voltages inside a domain of interest. In this paper, an adaptive threshold value based region of interest (ROI) method is proposed to improve the spatial resolution of reconstructed images as well as to reduce the computational time of the inverse problem. Adaptive threshold value is calculated by INTERMODES method and ROI is determined from the domain based on this value. Moreover, the computational domain of image reconstruction is restricted within a ROI and iterative Gauss-Newton method is employed to estimate the resistivity distribution. To evaluate the performance of the proposed method, numerical experiments have been performed and the results are analyzed.
Keywords
전기 임피던스 단층촬영법;영상복원;적응 문턱치;관심영역;
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  • Reference
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