TY - JOUR
A2 - Francomano, Elisa
AU - Chen, Yutong
AU - Han, Yan
AU - Yang, Wuqiang
AU - Li, Kun
PY - 2019
DA - 2019/12/28
TI - A New Iterative Algorithm Based on Correction of Sensitivity Matrix for Electrical Resistance Tomography
SP - 6384132
VL - 2019
AB - Electrical resistance tomography (ERT) is used to reconstruct the resistance/conductivity distribution. Usually, a uniform distribution is assumed as the initial condition to obtain a generic sensitivity matrix, which may be very different from a theoretical sensitivity matrix, resulting in a large error. The aim of this study is to analyse the difference between a generalized sensitivity matrix and a theoretical sensitivity matrix and to improve image reconstruction. The effect of the generic sensitivity matrix and theoretical sensitivity matrix on image reconstruction is analyzed. The error caused by the use of the generic sensitivity matrix is estimated. To reduce the error, an improved iterative image reconstruction algorithm is proposed, which is based on calculation of the error between the generic sensitivity matrix and the theoretical sensitivity matrix, and a correction coefficient with a penalty. During the iterative process, the resistivity distribution and sensitivity matrix are alternatively corrected. Simulation and experimental results show that the proposed algorithm can improve the quality of images, e.g., of two-phase distributions.
SN - 1024-123X
UR - https://doi.org/10.1155/2019/6384132
DO - 10.1155/2019/6384132
JF - Mathematical Problems in Engineering
PB - Hindawi
KW -
ER -