Title :
Trust region algorithm for image reconstruction in electrical capacitance tomography system
Author :
Lili, Wang ; Yu, Chen ; Deyun, Chen ; XiaoYang, Yu
Author_Institution :
Sch. of Comput. Sci. & Technol., Harbin Univ. of Sci. & Technol., Harbin, China
Abstract :
In this paper, 12-electrode electrical capacitance tomography system for oil-water two-phase flow is studied. Based on the principle of image reconstruction of ECT system, according to the characteristics of trust region algorithm, computing steps of ECT inverse problem are deduced. In the process of iterations, to guarantee the global convergence, the one-dimensional search factor is considered, which brings “damping” action. The results of simulation in trust region algorithm show that compared to LBP, Landweber and conjugate gradient method, for several typical flow regimes such as stratified flow, core flow and multi-trickle flow, there are some advantages such as high quality, softness boundary of reconstruction image, which supplies a new method for ECT image reconstruction.
Keywords :
Hessian matrices; capacitance; flow visualisation; image reconstruction; inverse problems; mechanical engineering computing; tomography; two-phase flow; ECT inverse problem; ECT system; Hesse matrix; LBP; electrical capacitance tomography system; image reconstruction; oil-water two-phase flow; one-dimensional search factor; trust region algorithm; Damping; Educational institutions; electrical capacitance tomography; image reconstruction; trust region algorithm;
Conference_Titel :
Computer Science and Network Technology (ICCSNT), 2011 International Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4577-1586-0
DOI :
10.1109/ICCSNT.2011.6181941
