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OCR Type A230
4.13 Filter Setup
You can use filter processing with Character Verification checkers and Smart Matching
checkers to eliminate unwanted parts.
Both dilation and erosion filters are available. These filters work on a captured image,
performing dilation or erosion before inspection. You can check enlarged and reduced
images in the area setting screen for each checker.
Two levels of filtering; 3 × 3 and 5 × 5, are available for both dilation and erosion filters,
working on a 3−pixel square or 5−pixel square relative to the original image.
Original image
Original image
3 × 3 erosion filter
3 × 3 dilation filter
Inspection Procedure
4.13 Filter Setup
or
5 × 5 erosion filter
or
5 × 5 dilation filter
4 − 29
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