A Novel Image Reconstruction Algorithm Based Trust Region of Conjugate Gradient for Electrical Capacitance Tomography System

2013 ◽  
Vol 5 (3) ◽  
pp. 332-338
Author(s):  
CHEN Deyun ◽  
SHAO Lei ◽  
WANG Lili ◽  
YU Xiaoyang
Keyword(s):  
Image Reconstruction ◽  
Conjugate Gradient ◽  
Trust Region ◽  
Reconstruction Algorithm ◽  
Electrical Capacitance Tomography ◽  
Electrical Capacitance ◽  
Image Reconstruction Algorithm ◽  
Tomography System ◽  
Capacitance Tomography

A Novel Preconditioned Conjugate Gradient Image Reconstruction Algorithm for Electrical Capacitance Tomography System

2011 ◽  
Vol 181-182 ◽  
pp. 629-635 ◽  
Author(s):  
Yu Chen ◽  
Jun Cao ◽  
De Yun Chen
Keyword(s):  
Image Reconstruction ◽  
Conjugate Gradient ◽  
Reconstruction Algorithm ◽  
Gradient Algorithm ◽  
Preconditioned Conjugate Gradient ◽  
Electrical Capacitance Tomography ◽  
Electrical Capacitance ◽  
Image Reconstruction Algorithm ◽  
Tomography System ◽  
Capacitance Tomography

To solve the‘soft-field’nature and the ill-posed problem in electrical capacitance tomography (ECT)technology, a novel preconditioned conjugate gradient algorithm for electrical capacitance tomography is presented. The analysis of the basic principles of electrical capacitance tomography, based on the given preconditioned conjugate gradient method and calculation formula of the iteration steps of the ECT and to explore the feasibility of application of the algorithm, the algorithm to meet the convergence conditions and the reconstruction image error. Experimental results and simulation data indicate that the algorithm can provide high quality images and favorable stabilization compared with LBP，conjugate gradient algorithms in simple flow pattern and this new algorithm presents a feasible and effective way to research on image reconstruction algorithm for Electrical Capacitance Tomography System.

scholarly journals A Superresolution Image Reconstruction Algorithm Based on Landweber in Electrical Capacitance Tomography

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Chen Deyun ◽  
Li Zhiqiang ◽  
Gao Ming ◽  
Wang Lili ◽  
Yu Xiaoyang
Keyword(s):  
Image Reconstruction ◽  
Reconstruction Algorithm ◽  
Electrical Capacitance Tomography ◽  
Electrical Capacitance ◽  
Image Reconstruction Algorithm ◽  
Tomography System ◽  
Tomography Image ◽  
Working Principle ◽  
The Stability ◽  
Capacitance Tomography

According to the image reconstruction accuracy influenced by the “soft field” nature and ill-conditioned problems in electrical capacitance tomography, a superresolution image reconstruction algorithm based on Landweber is proposed in the paper, which is based on the working principle of the electrical capacitance tomography system. The method uses the algorithm which is derived by regularization of solutions derived and derives closed solution by fast Fourier transform of the convolution kernel. So, it ensures the certainty of the solution and improves the stability and quality of image reconstruction results. Simulation results show that the imaging precision and real-time imaging of the algorithm are better than Landweber algorithm, and this algorithm proposes a new method for the electrical capacitance tomography image reconstruction algorithm.

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