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https://issues.apache.org/jira/browse/TIKA-93?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tyler Palsulich updated TIKA-93:
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Attachment: TesseractOCR_Tyler_v2.patch
Minor updates to the patch: Moved the OCRParser to tika-parsers (unless others
think it should be in tika-core?), moved the files from test-documents/ocr to
just test-documents.
In PDFParserTest, I added testOCR.pdf to the list of known metadataDiff, since
the PDF version is different for the NonSeq and Seq PDFBox parsers.
In tika-server TikaMimeTypesTest, I changed testGetJSON() -- will someone look
at this part? Something seems weird about it.
There still needs to be a check for if Tesseract is installed, and where. I
looked a bit at the ExternalParser code -- it seems useful, but I'm not sure
how to combine TesseractOCRParser and ExternalParser. Can someone else chime
in? At this point, I don't think we need more than a call to
ExternalParser.check(). But, I could be wrong.
In my opinion, we should just require that Tesseract be on the user's path.
It's an uncommon program. So, if a user installs it, it will probably be *for*
Tika OCR. So, it's not a big deal for them to put it on their path.
I put up a review: https://reviews.apache.org/r/22402/. I don't think this is
ready yet, but I'd like to get it moving.
> 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
> Assignee: Chris A. Mattmann
> Priority: Minor
> Fix For: 1.7
>
> Attachments: TIKA-93.patch, TIKA-93.patch, TIKA-93.patch,
> TIKA-93.patch, TesseractOCRParser.patch, TesseractOCRParser.patch,
> TesseractOCR_Tyler.patch, TesseractOCR_Tyler_v2.patch, testOCR.docx,
> testOCR.pdf, testOCR.pptx
>
>
> 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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