[Openicc] CUPS Color Management.. Rendering INtents

[Jan-Peter Homann]

Hello,
At time as the Altona Testsuite was constructed, it was quite 
complicated, to put all parts together.
If I remember right, some elements are something like "external objects" 
which are not easily to be adressed by rendering engines like poppler or GS.

The creators of Altone Testsuite are available for technical questions 
through the englosh mailinglist at www.eci.org

probably this year, they will realease Altona Testsuite 2.0 with live 
transparencies adressing PDF/X-4

Best regards
Jan-Peter

Am 14.02.11 04:14, schrieb Hal V. Engel:
>
> On Sunday, February 13, 2011 06:58:51 PM Koji Otani wrote:
>
> > I am not an expert about Color Management. But I would do what I can
>
> > do.
>
> > As for Rendering Intent,
>
> > it seems that there is a patch by other.
>
> > --------
>
> > Koji Otani
>
> >
>
> > From: Till Kamppeter <till.kamppeter at gmail.com>
>
> > Subject: Re: [Openicc] CUPS Color Management under Linux gets into 
> distros
>
> > Date: Thu, 10 Feb 2011 19:29:08 +0100
>
> > Message-ID: <4D542E74.3050408 at gmail.com>
>
> >
>
> > till.kamppeter> On 02/10/2011 07:40 AM, Koji Otani wrote:
>
> > till.kamppeter> > As Mr. Engel wrote, poppler doesn't support rendering
>
> > intent in PDF till.kamppeter> > content,
>
> > till.kamppeter> > INTENT_RELATIVE_COLORIMETRIC is hardcoded in it.
>
> > till.kamppeter> > This is because that too many changes on poppler were
>
> > needed till.kamppeter> > when I created patch for poppler.
>
> > till.kamppeter>
>
> > till.kamppeter> Otani-san, could you continue working on the Color
>
> > Management support till.kamppeter> of Poppler, adding the missing
>
> > features? This would be great. till.kamppeter>
>
> > till.kamppeter> Till
>
> > till.kamppeter>
>
>
> Yes a patch was created in response to the bug report I opened. It 
> appears to be doing the right thing when you look at what is happening 
> in the code but when run against pdf files that have tests for 
> rendering intent it fails the tests. GhostScript also fails that same 
> test so I am not sure what is going on. The only thing I can think of 
> is that perhaps the tests are intended for CMY(K) output since I only 
> tested this with RGB output at this point. Does that seem plasible? 
> Kai-Uwe were your tests of this with RGB output or did you test with 
> CMY(K) output? I will test this in tomorrow when I have some time to 
> look at it.
>
>
> Hal
>
>
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