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https://issues.apache.org/jira/browse/TIKA-93?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13895212#comment-13895212
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Chris A. Mattmann commented on TIKA-93:
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Grant no problem at all and happy to bear with ya. It's been a while since I
delved deep into the code myself :-)
Parsers are composable, there is a CompositeParser here:
http://tika.apache.org/1.4/api/org/apache/tika/parser/CompositeParser.html
So yeah you could have a OCRBaseParser extends CompositeParser and then calls
super with the List<Parser> of parsers to call along with a specific
MIMEregistry, etc.) And yep one could be Tesseract or JavaOCR, etc.
> OCR support
> -----------
>
> Key: TIKA-93
> URL: https://issues.apache.org/jira/browse/TIKA-93
> Project: Tika
> Issue Type: New Feature
> Components: parser
> Reporter: Jukka Zitting
> Priority: Minor
>
> I don't know of any decent open source pure Java OCR libraries, but there are
> command line OCR tools like Tesseract
> (http://code.google.com/p/tesseract-ocr/) that could be invoked by Tika to
> extract text content (where available) from image files.
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