Electrical Capacitance Tomography: Current sensors/algorithms and future advances

Electrical Capacitance Tomography (ECT) forms an inverse problem aiming on the determination of material specifics x in the domain Ω_ROI from capacitance measurements d̃ taken at the boundary ∂Ω_ROI of the region of interest (ROI). In this paper we give an overview about the current state of the art of ECT for process tomography. This includes aspects about instrumentation and reconstruction algorithms. Further we will give an outlook about current developments, future advances and applications for ECT techniques.