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.