Bug 690282

Summary:	Conversion of PDF with JBIG2 chops image
Product:	Ghostscript	Reporter:	Nathan Aldridge <naldridg>
Component:	PDF Interpreter	Assignee:	Henry Stiles <henry.stiles>
Status:	RESOLVED FIXED
Severity:	normal	CC:	b.geisselmeier, christinedelight.top85, masaki.ushizaka, shailesh.mistry
Priority:	P4
Version:	master
Hardware:	Other
OS:	AIX
Customer:		Word Size:	---

Description Nathan Aldridge 2009-02-10 15:35:51 UTC

One particular PDF has a jbig2 compressed image as an xobject that fills an
entire page. I get, approximately, the first third of the image but the rest of
it is chopped. Acrobat seems to do ok with rendering and extracting the image
but Ghostscript does not. I have tried release 8.63 and the *bleeding edge*
build and I see no difference.

Comment 1 Nathan Aldridge 2009-02-10 15:37:16 UTC

Created attachment 4784 [details]
PDF page with jbig2 xobject

Comment 2 Nathan Aldridge 2009-02-10 15:38:33 UTC

Created attachment 4785 [details]
converted tiffg4 lacking the last part of the image

Comment 3 Alex Cherepanov 2009-02-10 17:25:53 UTC

Created attachment 4786 [details]
foo.pdf - simplified sample file

Comment 4 Alex Cherepanov 2009-02-10 17:36:28 UTC

I confirm that the file has a single image and Ghostscript shows only
a part of it. My simplified file has only 7 objects and makes this obvious.
Reassigning to the owner of JBIG2 decoder.

Comment 5 Ralph Giles 2009-02-11 17:06:51 UTC

Hi Nathan. You have a knack with finding these files!

Looks a bug in our arith decoder or symbol dictionary parser.

Comment 6 Nathan Aldridge 2009-02-11 17:19:56 UTC

Don't blame me Ralph, I'm only the messenger. I have an infinite supply of
crappy PDF files at my disposal and they keep on coming too!

N.

Comment 7 Henry Stiles 2010-10-20 00:07:52 UTC

Accidently marked fixed when fixing another bug

Comment 8 Benjamin Geißelmeier 2011-01-17 11:57:31 UTC

Hello folks,

is there any news related to this issue?

Maybe you could give me a hint where to look in the sources, so that I can try to provide a fix.

Thanks,
Benjamin

Comment 9 Shailesh Mistry 2011-08-04 16:29:39 UTC

Bug still reproducible in Ghostscript 9.03

Comment 10 Henry Stiles 2012-02-27 00:26:37 UTC

Reportedly this is fixed in the latest code, if not please reopen.