APPLIED OPERATIONS
/Image Processing
2-163
Page
2-5-1-1 Contour Enhancement
When an image is blurred by the boundaries between image grains becoming unclear, it
can be sharpened by applying contour enhancement. Five types of filters are provided
for use in the contour enhancement.
1 Laplacian filter
This filter enhances the contours of the image grains. If the image contains noise, the
noise is also enhanced. By adding the original image to the image processed with
Laplacian filtering, it is possible to obtain an image with stronger contour enhancement.
The filter format is as shown below.
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1.
Display the [Display] panel of the image to be processed with Laplacian filtering.
2.
When the image is composed of multiple image slices, the range of image slices to
be filtered can be specified using the <Set start position> and <Set end position>
buttons above the image. First display the image slice to start filtering using the
<Display> button and click the <Set start position> button. Then, set the image slice
to end filtering in the same way as above.
3. When the image to be filtered was acquired in the multi-channel mode, filtering is
applied only to the channels being displayed.
Example) When only the Ch1 image is displayed, filtering is applied to the Ch1
image only.
For the switching of channels, see section 2-4-3, “Switching the Display
Channels”.
4.
Click the <2D Laplacian> button. A new [Display] panel having the page tab named
[Filter] appears, showing the filtered image.
During filtering, the status bar shows the progress of processing.
<Set start position>
button
<Set end position>
button
<Display>button
<Display channel switch>
buttons
<2D Laplacian> button
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