The color management system comprises a state-space based model for a
pixel element in a dynamically varying color marking device. A sensor
measures the color of the printed output for construction of a selected
set of sensitivity functions representative of color output relating to
inputs. The gradients of the sensitivity functions are extracted and used
to develop the corresponding discrete multivariable state-space model of
the pixel element. More particularly, the model is constructed from the
Jacobian matrix characterizing a change in measured color output for a
change in input color values of the pixel. Extension of modeling
methodology for a single pixel is applied to multiple pixel elements.