Issue 98042 - PDF export: lossless compressed JPEG image with CMYK color space displays corrupted
Summary: PDF export: lossless compressed JPEG image with CMYK color space displays cor...
Status: ACCEPTED
Alias: None
Product: gsl
Classification: Code
Component: code (show other issues)
Version: OOo 3.0
Hardware: PC All
: P3 Trivial (vote)
Target Milestone: OOo 3.x
Assignee: AOO issues mailing list
QA Contact:
URL:
Keywords:
: 123461 (view as issue list)
Depends on:
Blocks:
 
Reported: 2009-01-13 18:59 UTC by docb
Modified: 2013-10-13 17:14 UTC (History)
3 users (show)

See Also:
Issue Type: DEFECT
Latest Confirmation in: 4.0.1
Developer Difficulty: ---

Attachments
example logo (802.77 KB, appication/x-bzip)
2009-01-13 19:01 UTC, docb 		no flags Details
original logo (1.07 MB, image/jpeg)
2009-01-15 10:30 UTC, docb 		no flags Details
Add an attachment (proposed patch, testcase, etc.)

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Description docb 2009-01-13 18:59:15 UTC 
When exporting a logo 'lossless' to PDF the result is dramatically different
than exporting it 'optimized for JPEG', quality level 100%. In the latter case
it is OK, in the first case it is rubbish.

See attached example
Comment 1 docb 2009-01-13 19:01:28 UTC 
Created attachment 59363 [details]
example logo
Comment 2 Rainer Bielefeld 2009-01-14 17:46:32 UTC 
I checked with "Ooo 3.0.0 (DE) Multilingual version German UI WIN XP: [OOO300m9
(Build9358)]" and can confirm the reported effect. 
It's something very special with that special picture. I can't reproduce the
problem with other pictures, even not with
"10000000000015E60000089F76568C01.jpg" extracted from "test_lossless.odp"

@docb:
Can you please provide the original picture file and some information how it has
been created?
Pls. specify your OS!
Comment 3 docb 2009-01-15 10:30:50 UTC 
Created attachment 59395 [details]
original logo
Comment 4 docb 2009-01-15 10:38:31 UTC 
The original picture was received from an advertising agency. I have to ask
which program they use to create it.
I tested it on OpenSUSE 11.1 OOO300m21 (Build:9319) and WinXP OOO300m9 build 9358
Comment 5 docb 2009-01-20 15:49:43 UTC 
The jpg was exported from Corel Draw
Comment 6 Rainer Bielefeld 2009-01-20 17:35:06 UTC 
I believe that that is some special "copyright-trick" by the creator.
When I open Hanse Vertrieb - West.jpg with "EditPad Lite", I find several funny
lines starting with "n~ûlÿ" and all same contents near by the beginning of the
document. After I deleted all those "same length lines" and saved again as .jpg,
the image still looked unchanged, but the lossless export problem had vanished.
Comment 7 philipp.lohmann 2009-01-20 17:46:03 UTC 
No, no malevolence involved :-) Incidentally I just had a look and the file is a
JPEG, but unlike almost every other JPEG it is in CMYK color space. With
lossless compression we enter the original file, but wrogly state it would be in
RGB, which leads to the wron graphic. However simply putting the CMYK color
space into the PDF results in the graphic being correctly rendered, but more
black on brown than white on blue like on the display. Incidentally the
previewer on the mac does the same with the original JPEG, while loading it into
gimp produces the same blue and white that OOo does.

Obviously we want the same result as on the display (which is more like it
should be ?), so simply passing on the original file and writing CMYK as info
will not work.

@sj: one would need to find out if a jpeg file is CMYK encoded and in this case
we want to go the normal path instead of passing it through. This however is
more a matter of goodies than of vcl or pdfexport itself, could you please have
a look ?
Comment 8 sven.jacobi 2009-09-28 12:49:45 UTC 
changed target
Comment 9 Ariel Constenla-Haile 2013-10-13 17:10:15 UTC 
*** Issue 123461 has been marked as a duplicate of this issue. ***