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https://issues.apache.org/jira/browse/PDFBOX-3438?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16466804#comment-16466804
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Dan Dorazio commented on PDFBOX-3438:
-------------------------------------
It doesn't seem like any real efforts are being made to enhance this
functionality.
We decided to assess what 'garbage' output meant using a Hashmap of the
characterset returned and, if it met that condition, we sent it through an
OCR engine, like Tesseract.
Hope that helps.
Dan
> only garbage extracted, lots of warnings "No Unicode mapping..."
> ----------------------------------------------------------------
>
> Key: PDFBOX-3438
> URL: https://issues.apache.org/jira/browse/PDFBOX-3438
> Project: PDFBox
> Issue Type: Wish
> Components: Text extraction
> Affects Versions: 2.0.2
> Reporter: Oliver Steinau
> Priority: Major
> Attachments: PDFBOX-3438.diff, PDFBOX-3438.txt, test.pdf
>
>
> When I try to extract text from this PDF, I get lots of warnings "No Unicode
> mapping for ...", and as output I only get garbage.
> PDF file displays fine in Acrobat Reader, and pdftotext.exe will extract the
> text just fine.
> PDF file seems to have a Type-1 font embedded with a custom encoding.
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