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From "Luis Filipe Nassif (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (TIKA-93) OCR support
Date Mon, 10 Feb 2014 13:19:22 GMT

    [ https://issues.apache.org/jira/browse/TIKA-93?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13896483#comment-13896483
] 

Luis Filipe Nassif commented on TIKA-93:
----------------------------------------

I have tried Tess4J a few months ago. The main problem was JVM crashes with some kinds of
images, probably related with native code execution. So I changed to the Tesseract exec approach,
that obviously did not cause JVM crashes. But the OCRing of a few images never terminates
and some timeout control was necessary, like for other existing Tika parsers.

> 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
>         Attachments: TIKA-93.patch, TIKA-93.patch, TIKA-93.patch, TIKA-93.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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