Image Processing Reference
In-Depth Information
smoothness. Otherwise, visual artifacts can be expected from the
le. Thus,
the corner plots typically probe deep into the local regions of a color gamut and can
be a good indicator of the local inversion and mapping problems.
final pro
7.7.3 V
ISUAL
E
VALUATION OF
P
ROFILES
No single pro
uenced by the
observer characteristics, viewing conditions, and preferences to a certain color and
le can please everyone. Visual evaluation is largely in
Co
r
ner
s
=
2
55
0 0
0
Co
r
ner
s
= 2
5
5
0
0
0
8
250
7
200
6
5
150
4
K
C
M
Y
100
3
2
50
1
0
0
0
20
40
60
80 100 120 140 160 180 200
0
20
40
60
80
100 120 140 160 180 200
From 0 to gamut corner
From 0 to gamut corner
Co
r
ners = 0 25
5
0 0
Cor
n
ers = 0 255
0 0
250
8
7
200
6
5
150
4
K
C
M
Y
100
3
2
50
1
0
0
0
50
100
150
0
50
100
150
From 0 to gamut corner
From 0 to gamut corner
Corn
e
rs = 0
0 255
0
Cor
n
ers = 0
0 255
0
250
8
7
200
6
5
150
4
K
C
M
Y
100
3
2
50
1
0
0
0
20
40
60
80
100
0
20
40
60
80
100
(e)
From 0 to gamut corner
From 0 to gamut corner
FIGURE 7.65 (continued)
(e) CMYK resoponse (left) and corresponding round trip accur-
acy (right) to cyan, magenta, and yellow corners from 50,0,0 point (
'
0
'
on x-axis corresponds
to 50,0,0 point).
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