Image Processing Reference
In-Depth Information
les with comparatively higher round trip accuracy
for near-boundary nodes to highlight the usefulness of these plots in identifying
D
E
2000
errors. Clearly, the corner plots provide useful indication of the round trip
accuracy in critical regions. They also provide a visual indication of the CMYK
response to continuous L*a*b* stimuli along the line. If the CMYK response does
not show a smooth continuous function with respect to x-axis, then we can expect
We deliberately chose the pro
C
orn
e
rs = 0 2
5
5 2
5
5
0
C
orn
e
rs =
0 2
5
5 2
5
5
0
8
250
K
C
M
Y
7
200
6
5
150
4
100
3
2
50
1
0
0
0
20
40
60
80
100
120 140 160 180
0
20
40
60
80
100 120 140 160 180
From 0 to gamut corner
From 0 to gamut corner
C
o
rne
r
s =
2
55
0 2
5
5 0
C
o
rne
r
s =
2
55
0 2
5
5
0
8
250
K
C
M
Y
7
200
6
5
150
4
100
3
2
50
1
0
0
0
20
40
60
80
100 120 140 160
0
20
40
60
80
100 120 140 160
From 0 to gamut corner
From 0 to gamut corner
Corn
er
s = 2
55
255
0 0
Corn
e
rs = 25
5
255
0 0
8
250
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
(b)
From 0 to gamut corner
From 0 to gamut corner
FIGURE 7.65 (continued)
(b) CMYK response (left) and corresponding round trip accuracy
(right) to red, green, blue corners from 100,0,0 point (
'
0
'
on x-axis coresponds to 100,0,0
point).
(continued )
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