[jira] [Updated] (PDFBOX-3019) Optimize tolerance settings

["Ben McCann (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PDFBOX-3019?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ben McCann updated PDFBOX-3019:
-------------------------------
    Attachment: jbl-example-com.pdf

The extraneous spacing problem is common enough in resumes that I was able to find the [sample resume|http://rampages.us/rhodesc1/wp-content/uploads/sites/4737/2014/07/Resume-Connor-Rhodes.pdf] I posted earlier just by downloading half a dozen random resumes from Google. However, it's not showing up in the digital corpora files that I'm looking at. Perhaps this issue only shows up with certain fonts or with documents that were converted to pdf from word? I'm not quite sure why it's so much more prevalent in resumes than in the digital corpora.

Anyway, I to help diagnose, I edited the example doc that I found from Google so that now all it says is "jbl@example.com". Pdfbox is parsing this as "jb l@example.com". Hopefully someone with more pdfbox familiarity than I have will be able to track down what the issue is. I'm wondering if there might be some bug beyond just the tolerance settings since these letters look like they're quite close together to the human eye

> Optimize tolerance settings
> ---------------------------
>
>                 Key: PDFBOX-3019
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-3019
>             Project: PDFBox
>          Issue Type: Bug
>    Affects Versions: 2.0.0
>            Reporter: Ben McCann
>             Fix For: 2.0.0
>
>         Attachments: jbl-example-com.pdf
>
>
> From testing on my internal dataset I believe there might be some regression in the effectiveness of PDFTextStripper.
> Here's an [example doc|http://rampages.us/rhodesc1/wp-content/uploads/sites/4737/2014/07/Resume-Connor-Rhodes.pdf] I found on the web, which converted better in 1.8 than 2.0. Notice that it extracts "J e a n e t t e  A c o s t a ;  S e r v i c e  M a n a g e r  a t  M a d  F o x  B r e w i n g  C o m p a n y". It doesn't seem like there's very much space between the letters in the pdf, so it's curious to me that it didn't do too well.
> I realize this is an area where we probably can't strive for perfection. Yet, it does seem to me that from 1.8 to 2.0 we may have taken a step backwards. I believe there's some sort of regression test for PDFToImage which exports a set of pdfs to images at two different commits and looks at what the differences are. Do we have the same sort of thing for PDFTextStripper? If not, can we build one by pulling docs off the public web? I'd be willing to contribute to this endeavor.



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