电容层析成像系统图像重建新算法的研究

A New reconstruction algorithm for Electrical Capacitance Tomography

快速而又具有一定精度的图像重建算法是电容层析成像 (ECT)技术的关键。本文提出一种用多元线性回归法建立ECT系统正向模型 ,用正则化法获得图像重建这一不适定逆问题稳定解的图像重建新算法。仿真结果表明该方法能快速而较高精度地重建出两相流断层图像。

Fast reconstruction algorithm with an acceptable accuracy is key to electrical capacitance tomography (ECT). A new reconstruction method is proposed in this paper. The main idea of this method is to model ECT forward problem by using multiple linear regression and obtain a stable solution of the image reconstruction problem (an ill posed inverse problem) by using regularization. Simulation results illustrate that this method is capable of reconstructing the two phase flow cross section fast and rather accurately.