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Panasonic A230 User Manual page 173

Machine vision system

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OCR Type A230
8.5
Setting the Judgment Conditions
Use the judgment conditions to set OK/NG (pass/fail) criteria for the area difference
(Sub. Det. Area) and quantity difference (Sub. Det. Judgment) when the target object
is compared to the reference character image.
4. Sub. Det. Area
5. Sub. Det. Judgment
Sub. Det. Area
With this you can set the minimum area for groups of extracted pixels that result from
comparison (differential) of the registered image and the target image to be subject to
the setting in Sub. Det. Judgment.
Pixel groups with areas smaller than the setting are not counted.
Sub. Det. Judgment.
With this you can set the quantity of the number of extracted pixel groups (differential
detection number) that result from comparison (differential) of the registered image and
the target image for an article to be considered good.
If the number of detected white pixel groups exceeds the setting value, the result is
judged to be NG.
Example
Judgment
conditions
Sub. Det. Area = 30
Sub. Det. Judgment = 0
1
128
Judgment
If there is even one
group of white pixels
with an area of 30 or
more pixels, the result
is NG.
Character Verification Checker
8.5
Setting the Judgment Conditions
8 − 17

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