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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PDFBOX-4211) Some text is missing in JBIG2 images
Date Tue, 08 May 2018 20:50:00 GMT

    [ https://issues.apache.org/jira/browse/PDFBOX-4211?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16467948#comment-16467948
] 

ASF subversion and git services commented on PDFBOX-4211:
---------------------------------------------------------

Commit bea97c32f45daa3c74766aa6150c66aa87addb84 in pdfbox-jbig2's branch refs/heads/master
from [~tilman]
[ https://git-wip-us.apache.org/repos/asf?p=pdfbox-jbig2.git;h=bea97c3 ]

PDFBOX-4211: fix line of code that does not follow the JBIG2 standard, by Jani Pehkonen

> Some text is missing in JBIG2 images
> ------------------------------------
>
>                 Key: PDFBOX-4211
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-4211
>             Project: PDFBox
>          Issue Type: Bug
>          Components: JBIG2
>    Affects Versions: 3.0.0 JBIG2
>            Reporter: Jani Pehkonen
>            Priority: Major
>             Fix For: 3.0.1 JBIG2
>
>         Attachments: EncodedTable.patch, page_iii_(2).pdf
>
>
> [This PDF|http://library.sciencemadness.org/library/books/unitized_experiments_in_ochem.pdf]
has problems.
> See pages "iii" (2), "ix" (6), "x" (7) etc. These pages have most of their text missing
or in wrong position when rendered in PDFDebugger. Each page is a JBIG2 image that uses Huffman
encoding. You may need to use for example -Xmx1000M to avoid OutOfMemoryError because the
JBIG2 images are very large.
> Apply my patch to file EncodedTable.java in package org.apache.pdfbox.jbig2.decoder.huffman.
I have fixed one line of code that does not follow the JBIG2 standard. 
> The JBIG2 standard is freely available [here|https://www.itu.int/rec/T-REC-T.88-200002-I/en]



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