Application of thresholding Landweber algorithm in MIT image reconstruction. (Chinese. English summary) Zbl 1363.94013

Wang, Xu; Wang, Jingwen; Wang, Keyuan

J. Northeast. Univ., Nat. Sci. 37, No. 4, 477-480 (2016).

Summary: To improve image reconstruction quality of magnetic induction tomography (MIT), a thresholding Landweber reconstruction algorithm was put forward. The threshold value was set on the basis of the Landweber algorithm, and the threshold parameter was adaptively regulated with the iteration, which could improve the image reconstruction quality and accelerate the convergence rate of the Landweber algorithm. Based on the MIT system model established with Comsol Multiphysics, a forward mathematical model was set up and solved by the finite element method. The simulation results showed that the image reconstruction quality obtained by threshold Landweber reconstruction algorithm is better than that obtained by LBP and the algorithm without threshold, and the convergence rate can be accelerated.

MSC:

94A08

Image processing (compression, reconstruction, etc.) in information and communication theory

Keywords:

magnetic induction tomography; image reconstruction; Landweber; thresholding; finite element method

Software:

COMSOL