APPLIED OPERATIONS
/Image Processing
OPERATION INSTRUCTIONS
2 - 2 2 7
Page
Fig. 2-84 Panel Displaying the Laplacian Filtered Image
2 Sobel filter
This filter enhances the contours of the image grains. If the image contains noise, the noise
is also enhanced. It has two filter formats, X and Y, as shown below. The format providing
the larger value after filtering is used.
-1
-2
-1
-1
0
1
0
0
0
-2
0
2
1
2
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 <Sobel> button.
<Sobel> button
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