Image Processing Reference
In-Depth Information
Feedback
controller
Initial/nominal
CMY
values obtained using ICI algorithm
x
(
k
)
Printer model for
CMY
gamut class
(or input-output data)
+
Reference
r
+
Integrator
K
e
(
k
)
Spot color
L*a*b*
u
(
k
)
Measured
L*a*b*
Mapped
L*a*b*
for
out-of-gamut colors
x
(
k+
1) =
Ax
(
k
) +
Bu
(
k
)
FIGURE 8.29
Closed-loop control algorithm with a gain matrix and the integrator as controller shown for spot-color control algorithm using CMY
gamut class.
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