Image Processing Reference
In-Depth Information
2
4
3
5
20301020
00000000
40103050
00000000
20401020
00000000
20103020
00000000
g(n, m)
¼
Now we
filter the signal using a separable 2-D
filter. The row and column
filters
.We
1
2
1
2
are identical and each is given by h ¼
1
rst
filter each row using h.
The resulting image is
2
4
3
5
22
50 2 1
00000000
42
:
53211
:
5
00000000
2342
:
0123452
:
g 2 (n, m)
¼ g 1 (n, m)*h(m)
¼
521
00000000
21
:
511
:
521
00000000
:
51232
:
Apply the same
filter h across each column of image g 2 (n, m) and this process
results in
2
4
3
5
22
:
53211
:
50
2
1
32
:
52222
:
75 3
:
51
:
75
42
:
0123452
:
5
32
:
75 2
:
52
:
25
2
2
:
75 3
:
51
:
75
g(n, m)
¼ g 2 (n, m) * h(n)
¼
2342
:
511
:
521
22
:
25 2
:
52
:
52221
21
:
51232
:
521
10
:
75 0
:
511
:
51
:
25
1
0
:
5
Example 2.16
Resize the following 6
6 image f (n, m)toa4
4 image.
2
4
3
5
124212
302432
231064
532103
200562
432732
f (n, m)
¼
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