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#1 Posted : Tuesday, December 5, 2006 8:37:49 AM(UTC)

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i am using the 15 OCR sdk and want to filter out special characters (!, @,#,$,%,^,&,*, etc) from the list of possible matches. I only want upper, lower and digits. I have tried using:

_rasterDocument.LanguageCharacterFilter = RasterDocumentCharacterFilter.Uppercase

_rasterDocument.LanguageCharacterFilter = RasterDocumentCharacterFilter.Lowercase

_rasterDocument.LanguageCharacterFilter = RasterDocumentCharacterFilter.Digit

But there does not seem to be a way to apply multiple filters or to remove a single particular set of characters.

Any help would be great. Thanks!


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#2 Posted : Wednesday, December 6, 2006 7:22:48 AM(UTC)

Qasem Lubani  

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You can use the Plus filter, with the RasterOcr.LanguageCharacterPlus
property to add a set of characters to the original characters of the selected language.

Then use the RasterOcr.LanguageCharacterPlusFilter
property to set a filter over the language environment (it contains a set of characters that you select from the language environment).

#3 Posted : Monday, December 18, 2006 9:31:51 PM(UTC)

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Thank you for the reply. I switched to the 14.5 code so i can use it in a .NET 1.1 application.

I tried your suggestion but i still cannot get it to work. I tried many variations of the following code using the LanguageCharacterFilter, LanguageCharacterPlusFilter and the LanguageCharacterPlusFilter properties.

Options.RasterDoc.LanguageCharacterFilter = LTRASTERDOCLib.CHARFILTER.CHAR_FILTER_ALPHA

Options.RasterDoc.LanguageCharacterPlusFilter = LTRASTERDOCLib.CHARFILTER.CHAR_FILTER_DIGIT

Options.RasterDoc.LanguageCharacterPlus = "0,1,2,3,4,5,6,7,8,9"

Then i call this to check the filter.

MsgBox(Options.RasterDoc.IsCharacterEnabled("A") & " " & Options.RasterDoc.IsCharacterEnabled("9") & " " & Options.RasterDoc.IsCharacterEnabled("+"))

I cannot make the system only allow upper case, lower case and digits.

#4 Posted : Thursday, December 21, 2006 7:38:43 AM(UTC)

Qasem Lubani  

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Attached is a VB.net project that I have created
with the LanguageCharacterPlusFilter. Can you test this at your end and see if it does the desired job.


Note: the project was originally converted from VB6, but that should make no difference.

File Attachment(s):
Project1.NET.zip (191kb) downloaded 31 time(s).
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