Image Processing Reference
In-Depth Information
If the in-gamut colors in the original image do not match the colors in the
rendered image, then the errors can be associated to round trip accuracy with
the actual printing device. This could be due to inversion errors or the errors in the
printer model, if a printer model is used as a surrogate characterization of the printer.
C
o
rners
=
0 0
255 2
5
5
C
o
rners
=
0 0
255 2
5
5
250
8
K
C
M
Y
7
200
6
5
150
4
100
3
2
50
1
0
0
0
20
40
60
80
100
120
140
0
20
40
60
80
100
120
140
From 0 to gamut corner
From 0 to gamut corner
Co
r
ners =
0 0
0
255
Co
r
ners =
0
0
0
255
250
8
K
C
M
Y
7
200
6
5
150
4
100
3
2
50
1
0
0
0
20
40
60
80
100
120
0
20
40
60
80
100
120
From 0 to gamut corner
From 0 to gamut corner
Corn
e
rs = 25
5
255
0
255
Corn
e
rs = 25
5
255
0
255
250
8
K
C
M
Y
7
200
6
5
150
4
100
3
2
50
1
0
0
0
20
40
60
80
100
0
20
40
60
80
100
(h)
From 0 to gamut corner
From 0 to gamut corner
FIGURE 7.65 (continued)
(h) CMYK response (left) and corresponding round trip accur-
acy (right) to dark yellow, dark black, and dark blue corners from 50,0,0 point (
'
0
'
on x-axis
corresponds to 50,0,0 point).
(continued)
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