Actual filtering is carried out by a weighted average with the filtering operator for the
core pixel. For example, if the 3
×
3 median filter is applied to core pixel E, the following
calculation is carried out for the new image data E’.
A
B
C 1
2
1
E’= D E F
×
2
4
2
≡
G
H
I 1
2
1
1
2
1
2
4
2
1
2
1
2
2
4
2
2
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
I
H
G
F
E
D
C
B
A
A
C
B
D
E
F
G
H
I
A
’
C
’
B
’
D
’
E
’
F
’
G
’
H
’
I
’
Original data
New data
Core pixel
When User 1 or User 2 is selected in the Filter frame, the matrix element definition
frame Kernel becomes effective, and you can enter matrix elements by using the
keyboard.
The method of entering is as follows.
1.
Enter an integer between —128 and +128 (the total sum of the matrix
elements must not exceed 128) using the keyboard.
Press the TAB key. Then the highlighted matrix element is defined and the next
element will be highlighted.
The matrix elements defined in User 1 or User 2 can be saved using the Store
Configuration function.
2.
Click on the OK button.
Filtering is executed.
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TMPM5200-2
