Advantech VisionNavi User Manual page 65

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No polarity ····Automatically detect background color and character color to recog-
nize characters.
Black obj / white back.
···················Recognize black characters on white background.
White obj / black back
···················Recognize white characters on black background.
[Punctuation]
Turn it ON to detect punctuation marks.
[Separator]
Turn on to detect delimiter characters such as minus sign or equal.
[Rotation]
If the character string you want to extract is not parallel to the X axis, enable it.
[Character size]
You can specify the character size you want to extract. Correctable range is ± 45°.
[Regexp]
Extract the character string matching the following regular expression.
. ················Match any character except a newline character.
[...] ··············Match any character in the bracket. If the first character is '^', it
matches every character except the characters in the list. You can select a character
range by using the '-' character like '[A - Z 0 - 9]'. Other characters lose their special
meaning in brackets. (except for ' ¥ ')
* ················You can repeat the previous character or group 0 times or more.
+ ···············You can repeat it more than once.
? ···············You can repeat it 0 or 1 time.
{n,m} ··········You can repeat from n to m times.
{n} ·············You can repeat n times.
For the restriction symbols representing the above repetition, the longest match is
done by default. That is, the length of the match is maximized. Appending '?'
attempts to find a minimal match, e.g. +'?'.
Note!
If it does not match the regular expression, the nearest character is out-
put, so something other than the specified character may be output.
[Pattern match]
Specify the comparison method with the judgment character string.
Exact match
···················Perfectly match
Paerial match
···················Some match
Forward match
··················The beginning of the string match
Backward match
··················The end of the string match
Regexp ········You can describe judgment character strings with regular expressions.
Variable specifications such as date, DM, serial number, enclosed in {} are invalid.
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VisionNavi User Manual

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