Reconstruction of complex objects in electrical capacitance tomography

Author

Smolik, Waldemar

Author_Institution

Warsaw Univ. of Technol., Warsaw

fYear

2009

fDate

11-12 May 2009

Firstpage

432

Lastpage

437

Abstract

Electrical capacitance tomography (ECT) is fast, non-invasive and low cost imaging technique but offers very low spatial resolution. This paper presents the results of application of a nonlinear optimization technique for 2D reconstruction of images of complex objects. The iterative image reconstruction algorithm is based on the modified Levenberg-Marquard formula with additional convergence parameter. The original forward problem solver is used to speed up sensitivity matrix calculation. The reconstruction for numerical and real objects is presented. The 16 electrodes ETC was used for the real data acquisition.

Keywords

capacitance measurement; convergence; data acquisition; image reconstruction; image resolution; iterative methods; matrix algebra; optimisation; tomography; capacitance measurement; complex object reconstruction; convergence parameter; data acquisition; electrical capacitance tomography; forward problem solver; iterative 2D image reconstruction; modified Levenberg-Marquard formula; nonlinear optimization technique; sensitivity matrix calculation; spatial resolution; Capacitance measurement; Convergence; Electrical capacitance tomography; Electrodes; Image reconstruction; Inverse problems; Iterative algorithms; Jacobian matrices; Permittivity measurement; Visualization; electrical tomography; image reconstruction; inverse problem; nonlinear methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Imaging Systems and Techniques, 2009. IST '09. IEEE International Workshop on

Conference_Location

Shenzhen

Print_ISBN

978-1-4244-3482-4

Electronic_ISBN

978-1-4244-3483-1

Type

conf

DOI

10.1109/IST.2009.5071681

Filename

5071681