https://bugs.kde.org/show_bug.cgi?id=276845
David REVOY <i...@davidrevoy.com> changed:
What |Removed |Added
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CC| |i...@davidrevoy.com
--- Comment #7 from David REVOY <i...@davidrevoy.com> ---
Just a note on this very old thread because I tested all of this deeply this
week.
The CMYK PDF page opens as sRGB in Krita. But it looks like the CMYK was
converted with a generic profile like ChemicalProof (not the ICC embeded in the
PDF). This mistake also can be found in Okular. This is already cool.
If one wants to get the image as CMYK (not the page, sorry) you'll have to use
pdfimages from the poppler-utils package:
$ mkdir extracted
$ pdfimages -all input.pdf extracted/output
It will extract tiff, jpg or ppm in CMYK; but not profiled. Then you'll still
need to convert them manually to the target ICC with Imagemagick (apply simply
the profile; no convert/scaling):
$ convert output-000.tif -profile /path/to/your/CMYKprofile.icc
output-profiled.tif
Then you can open in Krita and check the render of your PDF. That's what I do
to control if Scribus exports well my picture in CMYK for my printer. I still
can't tell if Scribus should profile the picture ; or if it is poppler that
extract them and rmeove the profile... I'll write an article about this method
and my experience of FLOSS printing workflow & validation.
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