Parameter identification method for dual-energy X-ray imaging

•An implicit level lines method to define two parameters of dual-energy X-ray imaging is proposed.•The first informative signal is approximated by a third degree polynomial.•The second informative signal is approximated by a hyperbolic dependence.•The value of second parameter is obtained by quantization of its dependence from the first informative signal.•The value of first parameter is obtained by the second informative signal and second parameter using the tabulated function.

The paper presents a method for parameter identification of dual-energy X-ray imaging. This method is based on pre-calculated or experimentally obtained dependencies between the right sides of the system of two integral parametric equations and two required parameters within the ranges interesting to a customer. This method is characterized by a high processing speed depending on the speed of random access memory. Thus, it is used in different implementations of dual-energy X-ray imaging, namely digital radiography and computed tomography.