APPLIED OPERATIONS
/Image Processing
IV.
OPERATION INSTRUCTIONS
IV .
2 - 2 2 8
Page
3 High-pass X filter
The HIGH-PASS X filter passes the high-frequency structures in the X-direction of image.
In this way, it can extract details by detecting positions with large variation. This
processing is useful for making structures clear or extract the edges. The filter format is
as shown below.
-1
-1
-1
0
0
0
1
1
1
The operation method is identical to Laplacian filtering except for the following point. See
section 2-6-1-1-1, “Laplacian filter”.
z
Click the <Highpass X> button.
4 High-pass Y filter
The HIGH-PASS Y filter passes the high-frequency structures in the Y-direction of image.
In this way, it can extract details by detecting positions with large variation. This
processing is useful for making structures clear or extract the edges. The filter format is
as shown below.
1
0
-1
1
0
-1
1
0
-1
The operation method is identical to Laplacian filtering except for the following point. See
section 2-6-1-1-1, “Laplacian filter”.
z
Click the <Highpass Y> button.
<Highpass X> button
<Highpass Y> button
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