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https://issues.apache.org/jira/browse/TIKA-960?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13420806#comment-13420806
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Dave Meikle commented on TIKA-960:
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On the move so may be wrong but this sounds like overlapping text rendering in
the PDF document - i.e. bold/shadow effect created by rendering the text twice
next to each other.
Extracting the contents with the suppressDuplicateOverlappingText property
set[1] on the PDFParser appears to extract the content directly.
Will take a closer look once get back online.
Cheers,
Dave
[1]
http://tika.apache.org/1.2/api/org/apache/tika/parser/pdf/PDFParser.html#setSuppressDuplicateOverlappingText(boolean)
> Duplicate letters in text extracted from PDF files
> --------------------------------------------------
>
> Key: TIKA-960
> URL: https://issues.apache.org/jira/browse/TIKA-960
> Project: Tika
> Issue Type: Bug
> Components: parser
> Affects Versions: 1.2
> Environment: Windows 7, Oracle JRE 1.6.0_32, 64-Bit Server VM
> Reporter: Christof Luick
>
> When I extract the text from a given PDF (fussball.pdf, see link below) with
> Tika 1.2, the text extractor returns duplicated letters for some words. The
> string "SCHULE/KINDERGRUPPE" for example will be transformed into
> SSCCHHUULLEE//KKIINNDDEERRGGRRUUPPPPEE".
> The file "fussball.pdf" can be found at:
> http://www.pixelschleuder.de/misc/fussball.pdf
> I used the following command line for text extraction:
> java -jar tika-app-1.2.jar -t -eUTF-8 fussball.pdf > test.utf-8
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