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https://issues.apache.org/jira/browse/PDFBOX-6151?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18073672#comment-18073672
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Tilman Hausherr edited comment on PDFBOX-6151 at 4/15/26 7:23 AM:
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It's been over a month so the memory isn't fresh anymore. From what I remember
there were three zones of interest: GenericRefinementRegion.getRegionBitmap()
which starts with a "good" bitmap but then something goes wrong with the
overlay. The second thing is what you mention that is PDFBOX-6155, i.e. how to
treat that AT thing. I have some doubts whether the specification algorithm is
followed properly but I don't understand it. The third problem was about
reusing contexts (bitmap-symbol-context-reuse) from previous segments. That
file has 4.
This is how the renderings currently look (the white one is because there's an
exception):
!image-2026-04-15-09-22-39-238.png!
was (Author: tilman):
It's been over a month so the memory isn't fresh anymore. From what I remember
there were three zones of interest: GenericRefinementRegion.getRegionBitmap()
which starts with a "good" bitmap but then something goes wrong with the
overlay. The second thing is what you mention that is PDFBOX-6155, i.e. how to
treat that AT thing. I have some doubts whether the specification algorithm is
followed properly but I don't understand it. The third problem was about
reusing contexts (bitmap-symbol-context-reuse) from previous segments. That
file has 4.
> Run serenity JBIG2 tests
> ------------------------
>
> Key: PDFBOX-6151
> URL: https://issues.apache.org/jira/browse/PDFBOX-6151
> Project: PDFBox
> Issue Type: Task
> Components: JBIG2
> Affects Versions: 3.0.4 JBIG2
> Reporter: Tilman Hausherr
> Priority: Minor
> Attachments: image-2026-04-15-09-22-39-238.png
>
>
> Run the jbig2 files from the serenity tests by Nico Weber to see what happens.
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