A system and method are provided for linearizing the tone scale of
individual colors in a multi-color printing system, by deriving a
prescribed tone scale of individual colors in a single or multi-color
printing system. Full linear ink gradations are printed on multiple
substrates, and a linearization table is generated with multiple points
for each of the multiple substrates and/or ink gradations. A polynomial
curve is fitted to the points of each linearization table to generate
polynomial curves. At least one point in the polynomial curves is
selected, that shows high variation from one curve to a next curve, and
coefficients of a group of polynomial curves are plotted as functions of
the value of the at least one point. The range of prediction can be as
narrow or as broad as an application requires. Finally, a prescribed tone
scale table is derived from the polynomial curves and the at least one
point. A measured set of values can be compared against a predefined
database, and the most applicable transformation is then selected. The
data can be corrected to any suitable curve shape.