APPLIED OPERATIONS/Image Processing
IV.
OPERATION INSTRUCTIONS
IV .
2-227
Page
Fig. 2-85 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
000 -202
121 -101
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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