Color calibration has as its aim consistent color and is constrained by several factors, including both efficiency and contouring. In this paper, we describe a method of color calibration based on the measurement of halftone “quiet levels” and the subsequent selection of 256 halftone levels for CMYK that provide a linear response in dE from paper. The results of this method are contrasted with a more traditional eight bit gray balanced approach to calibration.
David C. Craig, Shen-ge Wang, "Color Calibration Optimization" in Proc. IS&T Int'l Conf. on Digital Printing Technologies and Digital Fabrication (NIP24), 2008, pp 611 - 615, https://doi.org/10.2352/ISSN.2169-4451.2008.24.1.art00040_2