Study on Image Reconstruction Algorithm for Electrical Capacitance Tomography System

The capacitance sensor features non-intrusive, rapid dynamic response, low cost, wide measuring range and easy mounting, so it is suitable for application in industries. The speediness and accuracy of image reconstruction algorithm in electrical capacitance tomography are essential. This paper presents a high-speed method for electrical capacitance tomography based on the Landweber iteration method. Landweber iteration method is simple and flexible with very good regularizing features. But it converges too slowly. The weakness is overcome by the high-speed iteration method, which can reduce iteration times and maintain the reconstruction quality.