Advantech VisionNavi User Manual page 67

Detect condition
[Polarity]
Black obj / white back.
···················Recognize black characters on white background.
White obj / black back
···················Recognize white characters on black background.
[Filter size]
Used to extract character area. Regions smaller than the filter size are excluded from
or excluded from extraction.
[Allow err]
Pixels that gray difference is less than the allowable value are judged to match.
[Area filter]
Exclude the area of the extracted character area below the filter value from the tar-
get.
[Verify with]
Used for verification. If there is no value in the registered character string or the num-
ber of extracted characters does not match, the collation will not be performed.
[Date offset]
Offset the date variable {dd} used for collation string.
[Month offset]
Offset the month variable {MM} used for collation character string.
61 VisionNavi User Manual