Representation of primary color tone reproduction curves for their stabilization

This paper proposed and compared different methods of representing the color tone reproduction curve (TRC) for stabilization of the monochorome xerographic printing process. TRC stabilization is vital in maintaining high consistency in color printout. Colors are typically represented by a 3-dimensional representation such as the CIELAB or CIEXYZ colorspaces. For stabilization control, the 3-dimensional representation is redundant due to the fact that limited actuators authority would not account for all the degree of freedom in the data representation. A 1- dimensional reparameterization of the 3-dimensional representation is better suited for the stabilizing control. The proposed parameterization methods involved projection of the 3- dimensional representation onto a parameterization curve. An empirical-based and model-based approach was used to describe this curve. Simulation and experimental results are presented to demonstrate the performance of the different parameterization method subject to measurement noise.