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#1 Posted : Tuesday, February 10, 2015 8:16:28 AM(UTC)


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The attached VS2010 C# Project is using LEADTOOLS version 19 with the Professional engine to show how to implement the Character Filters in an OCRZone so that the Language environment can be narrowed by specifying Character Sets. The name of each filter element indicates which category of characters it validates.


Here are the supported character sets:

0x00000000NoneNo character filters. 

0x00000001DigitRecognition of numerals only. For example: "3" (Digit Three). 

0x00000002UppercaseRecognition of uppercase letters only, including accented ones. For example: "A" (Capital A). 

0x00000004LowercaseRecognition of lowercase letters only including accented ones. For example: "a" (Lowercase a). 

0x00000006AlphaUpper and lowercase letters only. This is a combination of (Uppercase | Lowercase). 

0x00000008PunctuationRecognition of punctuation signs only. For example: "!" (Exclamation Mark). 

0x00000010MiscellaneousRecognition of other miscellaneous characters only. For example: "+" (Plus sign). 

characters. Since all elements are enabled, there is no filtering. This
a combination of Digit (| Uppercase | Lowercase | Punctuation |

the use of the "FilterPlus" characters. The FilterPlus characters are added after any filtering. For more information, refer to LEADTOOLS OCR Professional Engine Settings

0x00000021NumbersDigits plus the "FilterPlus" characters This is a combination of (Digit | Plus). 
File Attachment(s):
OCRCharacterFilterExample.zip (21kb) downloaded 81 time(s).
Hadi Chami
Developer Support Manager
LEAD Technologies, Inc.


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