Digital Signal Processing Reference
In-Depth Information
300
250
200
150
100
50
0
60
60
40
40
20
20
0
0
(a)
(b)
300
250
200
150
100
50
0
100
100
80
50
60
40
20
0
0
(c)
(d)
FIGURE 12.11
(a) Test image
SQUARE
, (b)
SQUARE
image corrupted by impulsive noise (green channel),
(c) test image
PYRAMID
, (d)
PYRAMID
image corrupted by mixed impulsive and Gaussian
noise, (green channel).
test image called
PYRAMID
was constructed. The three-channel image of size
(
contains a top-cut pyramid, which is used to simulate a “ramp-edge”
scenario (Figure 12.11c).
The test image
SQUARE
was corrupted by multivariate impulsive noise
following the model given by Equation 12.1 in Section 12.1, with the degree
of contamination
p
90
×
90
)
25 (Figure 12.11b). The test
image
PYRAMID
was corrupted by mixed impulsive noise with
p
=
0
.
1 and
p
1
=
p
2
=
p
3
=
0
.
=
0
.
1 and
p
1
=
p
2
=
p
3
=
0
.
25 and
σ
=
20 (Figure 12.11d).
Search WWH ::
Custom Search