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https://issues.apache.org/jira/browse/PDFBOX-3058?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15080550#comment-15080550
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John Hewson edited comment on PDFBOX-3058 at 1/3/16 10:28 PM:
--------------------------------------------------------------
{quote}
files with rotated glyphs.
{quote}
There's no fundamental problem here, PDFStreamEngine is doing things correctly,
so this should just be an implementation issue with PDFTextStripper - it looks
to me like it was never designed to handle this use case. I don't foresee any
problems in revisiting this issue in a later release.
{quote}
type 3 fonts have incorrect Bbox / Matrix, even Adobe Reader has trouble
marking these
{quote}
Yep, there are limits to what we can do with Type 3 fonts, as they're so
general. The advance width is probably the only reliable metric.
I'm pretty encouraged by these results - we've managed not to break anything
where there was an expectation of correctness, and there are even some small
improvements. Good stuff.
was (Author: jahewson):
{quote}
files with rotated glyphs.
{quote}
There's no fundamental problem here, PDFStreamEngine is doing things correctly,
so this should just be an implementation issue with PDFTextStripper - it looks
to me like it was never designed to handle this use case. I don't foresee any
problems in revisiting this issue in a later release.
{quote}
type 3 fonts have incorrect Bbox / Matrix, even Adobe Reader has trouble
marking these
{quote}
Yep, there are limits to what we can do with Type 3 fonts, as they're so
general. The advance width is probably the only reliable metric.
I'm pretty encourages by these results - we've managed not to break anything
where there was an expectation of correctness, and there are even some small
improvements. Good stuff.
> Support TIKA Migration to PDFBox 2.0
> ------------------------------------
>
> Key: PDFBOX-3058
> URL: https://issues.apache.org/jira/browse/PDFBOX-3058
> Project: PDFBox
> Issue Type: Task
> Components: Text extraction
> Affects Versions: 2.0.0
> Reporter: Maruan Sahyoun
> Attachments: NZAZKTQYKDD2HSBCSJJN6XSEA4KJEONU_1_8_10.json,
> NZAZKTQYKDD2HSBCSJJN6XSEA4KJEONU_2_0.json, content_diffs-1.8-to-2.0.xlsx,
> textLostFromACausedByNewExceptionsInB.zip
>
>
> This issue is to track fixing issues which came up as part of TIKA-1285
> (Upgrade to PDFBox 2.0.0 when available) mainly
> - new exceptions compared to PDFBox 1.8.x
> - regressions in text extraction
> - lower quality text extraction
> There should be individual issues to track tasks/bugs arising from that.
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