[Openicc] openicc Digest, Vol 24, Issue 21
Shahiduzzaman
shahid21st at gmail.com
Sun Mar 30 19:55:47 PDT 2008
Hi Kai
I discussed with you in IRC (nick: maveriick) about the ICC support
for HDR images. Form that discussion what I can understand that
extending the lcms CMM is the preferred and straightforward way to go
rather than CTL<->ICC conversion. But from the following discussion it
seems there are certain issues in following that approach. So what's
your current thinking, going into CTL<->ICC conversion way? As I am
writing my application now, it would certainly help.
Shahid
On 3/27/08, openicc-request at lists.freedesktop.org
<openicc-request at lists.freedesktop.org> wrote:
> Send openicc mailing list submissions to
> openicc at lists.freedesktop.org
>
> To subscribe or unsubscribe via the World Wide Web, visit
> http://lists.freedesktop.org/mailman/listinfo/openicc
> or, via email, send a message with subject or body 'help' to
> openicc-request at lists.freedesktop.org
>
> You can reach the person managing the list at
> openicc-owner at lists.freedesktop.org
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of openicc digest..."
>
>
> Today's Topics:
>
> 1. ICC support for HDR Images (Kai-Uwe Behrmann)
> 2. Re: ICC support for HDR Images (Cyrille Berger)
> 3. Re: Fwd: You are invited to take part in The Google Summer of
> Code(tm) 2008 (Cyrille Berger)
> 4. Re: ICC support for HDR Images (Boudewijn Rempt)
> 5. Re: ICC support for HDR Images (Kai-Uwe Behrmann)
> 6. Re: Fwd: You are invited to take part in The Google Summer of
> Code(tm) 2008 (Graeme Gill)
> 7. Re: ICC support for HDR Images (Cyrille Berger)
> 8. Re: ICC support for HDR Images (Bob Friesenhahn)
> 9. Re: ICC support for HDR Images (Kai-Uwe Behrmann)
> 10. Re: ICC support for HDR Images (Bob Friesenhahn)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 26 Mar 2008 09:32:15 +0100 (CET)
> From: Kai-Uwe Behrmann <ku.b at gmx.de>
> Subject: [Openicc] ICC support for HDR Images
> To: OpenICC Liste <openicc at lists.freedesktop.org>
> Message-ID: <Pine.LNX.4.61.0803260906440.6922 at sirius.rasena>
> Content-Type: TEXT/PLAIN; charset=US-ASCII
>
> We have the above GSoC project idea.
> http://www.freedesktop.org/wiki/OpenIccForGoogleSoC2008
> In the old text stands something about buiding a convertor between CTL <->
> ICC formats.
>
> Given the distribution problems with CTL, would we stay on this route?
> I think SampleICC has something similiar even not a programmable language.
> It seems to be based on the floating point elements proposed for the ICC
> specification.
>
> kind regards
> Kai-Uwe Behrmann
> --
> developing for colour management
> www.behrmann.name + www.oyranos.org
>
>
>
> ------------------------------
>
> Message: 2
> Date: Wed, 26 Mar 2008 10:03:00 +0100
> From: Cyrille Berger <cberger at cberger.net>
> Subject: Re: [Openicc] ICC support for HDR Images
> To: OpenICC Liste <openicc at lists.freedesktop.org>
> Message-ID: <200803261003.00449.cberger at cberger.net>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hi,
>
> On Wednesday 26 March 2008, Kai-Uwe Behrmann wrote:
> > We have the above GSoC project idea.
> > http://www.freedesktop.org/wiki/OpenIccForGoogleSoC2008
> > In the old text stands something about buiding a convertor between CTL <->
> > ICC formats.
> >
> > Given the distribution problems with CTL, would we stay on this route?
> Since I started OpenCTL [1] to solve that issue. I do think that an ICC to CTL
> conversion is still something interesting. I also started to write some sort
> of CTL profiles (you can see an exemple here [2])
>
> > I think SampleICC has something similiar even not a programmable language.
> > It seems to be based on the floating point elements proposed for the ICC
> > specification.
>
> Since SampleICC has a 4-clauses BSD licence, it has licence issue with GPL
> programs.
>
> [1] http://www.openctl.org
> [2]
> http://websvn.kde.org/trunk/koffice/krita/colorspaces/xyz_float_hdr.ctl/xyzaf32.ctlp?revision=789697&view=markup
>
> --
> Cyrille Berger
>
>
> ------------------------------
>
> Message: 3
> Date: Wed, 26 Mar 2008 10:04:06 +0100
> From: Cyrille Berger <cberger at cberger.net>
> Subject: Re: [Openicc] Fwd: You are invited to take part in The Google
> Summer of Code(tm) 2008
> To: Kai-Uwe Behrmann <ku.b at gmx.de>
> Cc: OpenICC Liste <openicc at lists.freedesktop.org>
> Message-ID: <200803261004.06445.cberger at cberger.net>
> Content-Type: text/plain; charset="iso-8859-1"
>
> On Tuesday 25 March 2008, Kai-Uwe Behrmann wrote:
> > We have not explicitely planed. Nethertheless I wrote a blog entry:
> > http://www.behrmann.name/wind/docs/gsoc_2008.03.25.html
> > for spreading.
>
> I also wonder, does anyone knows if there are course in university about color
> management ? It could be interesting to reach students that way.
>
> --
> Cyrille Berger
>
>
> ------------------------------
>
> Message: 4
> Date: Wed, 26 Mar 2008 09:36:54 +0100 (CET)
> From: Boudewijn Rempt <boud at valdyas.org>
> Subject: Re: [Openicc] ICC support for HDR Images
> To: OpenICC Liste <openicc at lists.freedesktop.org>
> Message-ID: <Pine.LNX.4.64.0803260936180.15903 at calcifer.valdyas.org>
> Content-Type: TEXT/PLAIN; charset=US-ASCII
>
> On Wed, 26 Mar 2008, Kai-Uwe Behrmann wrote:
>
> > We have the above GSoC project idea.
> > http://www.freedesktop.org/wiki/OpenIccForGoogleSoC2008
> > In the old text stands something about buiding a convertor between CTL <->
> > ICC formats.
> >
> > Given the distribution problems with CTL, would we stay on this route?
> > I think SampleICC has something similiar even not a programmable language.
> > It seems to be based on the floating point elements proposed for the ICC
> > specification.
>
> Well, Cyrille started working on OpenCTL recently -- though I'm not sure
> how advanced that is at the moment.
>
> Boudewijn
>
>
>
> ------------------------------
>
> Message: 5
> Date: Wed, 26 Mar 2008 10:57:42 +0100 (CET)
> From: Kai-Uwe Behrmann <ku.b at gmx.de>
> Subject: Re: [Openicc] ICC support for HDR Images
> To: Cyrille Berger <cberger at cberger.net>
> Cc: OpenICC Liste <openicc at lists.freedesktop.org>
> Message-ID: <Pine.LNX.4.61.0803261028210.6922 at sirius.rasena>
> Content-Type: TEXT/PLAIN; charset=US-ASCII
>
> Am 26.03.08, 10:03 +0100 schrieb Cyrille Berger:
> > On Wednesday 26 March 2008, Kai-Uwe Behrmann wrote:
> > > We have the above GSoC project idea.
> > > http://www.freedesktop.org/wiki/OpenIccForGoogleSoC2008
> > > In the old text stands something about buiding a convertor between CTL <->
> > > ICC formats.
> > >
> > > Given the distribution problems with CTL, would we stay on this route?
> > Since I started OpenCTL [1] to solve that issue. I do think that an ICC to CTL
> > conversion is still something interesting. I also started to write some sort
> > of CTL profiles (you can see an exemple here [2])
>
> Ok, so we continue with this suggestion.
>
> > > I think SampleICC has something similiar even not a programmable language.
> > > It seems to be based on the floating point elements proposed for the ICC
> > > specification.
> >
> > Since SampleICC has a 4-clauses BSD licence, it has licence issue with GPL
> > programs.
>
> Is this something stated officially? My guess was it is basically a 4
> clause BSD. Cant it still be linked in as library?
>
> > [1] http://www.openctl.org
> > [2]
> > http://websvn.kde.org/trunk/koffice/krita/colorspaces/xyz_float_hdr.ctl/xyzaf32.ctlp?revision=789697&view=markup
>
> kind regards
> Kai-Uwe Behrmann
> --
> developing for colour management
> www.behrmann.name + www.oyranos.org
>
>
>
> ------------------------------
>
> Message: 6
> Date: Wed, 26 Mar 2008 21:13:55 +1100
> From: Graeme Gill <graeme at argyllcms.com>
> Subject: Re: [Openicc] Fwd: You are invited to take part in The Google
> Summer of Code(tm) 2008
> Cc: OpenICC Liste <openicc at lists.freedesktop.org>
> Message-ID: <47EA21E3.7040506 at argyllcms.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Cyrille Berger wrote:
>
> > I also wonder, does anyone knows if there are course in university about color
> > management ? It could be interesting to reach students that way.
>
> There are several universities that have degree and Ph.D. courses on Color Sciences.
> See <http://mcsl.rit.edu/> for an example.
>
> Graeme Gill.
>
>
> ------------------------------
>
> Message: 7
> Date: Wed, 26 Mar 2008 12:46:13 +0100
> From: Cyrille Berger <cberger at cberger.net>
> Subject: Re: [Openicc] ICC support for HDR Images
> To: Kai-Uwe Behrmann <ku.b at gmx.de>
> Cc: OpenICC Liste <openicc at lists.freedesktop.org>
> Message-ID: <200803261246.13375.cberger at cberger.net>
> Content-Type: text/plain; charset="iso-8859-1"
>
> On Wednesday 26 March 2008, you wrote:
> > > > I think SampleICC has something similiar even not a programmable
> > > > language. It seems to be based on the floating point elements proposed
> > > > for the ICC specification.
> > >
> > > Since SampleICC has a 4-clauses BSD licence, it has licence issue with
> > > GPL programs.
> >
> > Is this something stated officially? My guess was it is basically a 4
> > clause BSD. Cant it still be linked in as library?
>
> See: http://www.gnu.org/licenses/gpl-faq.html#OrigBSD
> http://www.gnu.org/licenses/license-list.html#OriginalBSD
>
> And definition of compatibility by FSF:
> http://www.gnu.org/licenses/gpl-faq.html#WhatIsCompatible
>
> And about linking :
> http://www.gnu.org/licenses/gpl-faq.html#LinkingWithGPL
>
> --
> Cyrille Berger
>
>
> ------------------------------
>
> Message: 8
> Date: Wed, 26 Mar 2008 10:05:59 -0500 (CDT)
> From: Bob Friesenhahn <bfriesen at simple.dallas.tx.us>
> Subject: Re: [Openicc] ICC support for HDR Images
> To: Kai-Uwe Behrmann <ku.b at gmx.de>
> Cc: OpenICC Liste <openicc at lists.freedesktop.org>
> Message-ID: <Pine.SOC.4.64.0803260923460.975 at freddy.simplesystems.org>
> Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
>
> On Wed, 26 Mar 2008, Kai-Uwe Behrmann wrote:
> >> Since SampleICC has a 4-clauses BSD licence, it has licence issue with GPL
> >> programs.
> >
> > Is this something stated officially? My guess was it is basically a 4
> > clause BSD. Cant it still be linked in as library?
>
> The license issue is a rather small one with a trivial work-around
> (i.e. compliance). See
> "http://www.fsf.org/licensing/licenses/index_html#OriginalBSD" and
> "http://www.gnu.org/philosophy/bsd.html". Interestingly, even though
> the FSF complains about the "advertising clause", there are somewhat
> similar clauses in GPL.
>
> Bob
> ======================================
> Bob Friesenhahn
> bfriesen at simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
> GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
>
>
>
> ------------------------------
>
> Message: 9
> Date: Wed, 26 Mar 2008 16:37:51 +0100 (CET)
> From: Kai-Uwe Behrmann <ku.b at gmx.de>
> Subject: Re: [Openicc] ICC support for HDR Images
> To: Bob Friesenhahn <bfriesen at simple.dallas.tx.us>
> Cc: OpenICC Liste <openicc at lists.freedesktop.org>
> Message-ID: <Pine.LNX.4.61.0803261625080.6922 at sirius.rasena>
> Content-Type: TEXT/PLAIN; charset=US-ASCII
>
> Am 26.03.08, 10:05 -0500 schrieb Bob Friesenhahn:
> > On Wed, 26 Mar 2008, Kai-Uwe Behrmann wrote:
> > > > Since SampleICC has a 4-clauses BSD licence, it has licence issue
> > > > with GPL
> > > > programs.
> > >
> > > Is this something stated officially? My guess was it is basically a 4
> > > clause BSD. Cant it still be linked in as library?
> >
> > The license issue is a rather small one with a trivial work-around (i.e.
> > compliance). See
> > "http://www.fsf.org/licensing/licenses/index_html#OriginalBSD" and
> > "http://www.gnu.org/philosophy/bsd.html". Interestingly, even though the FSF
> > complains about the "advertising clause", there are somewhat similar clauses
> > in GPL.
>
> Well, it's not so comfortable to have a CMM forcing Oyranos to mention
> this one, while Oyranos itself is liberal about that.
>
> So other options might fit better.
>
> kind regards
> Kai-Uwe Behrmann
> --
> developing for colour management
> www.behrmann.name + www.oyranos.org
>
>
>
> ------------------------------
>
> Message: 10
> Date: Wed, 26 Mar 2008 11:41:04 -0500 (CDT)
> From: Bob Friesenhahn <bfriesen at simple.dallas.tx.us>
> Subject: Re: [Openicc] ICC support for HDR Images
> To: OpenICC Liste <openicc at lists.freedesktop.org>
> Message-ID: <Pine.SOC.4.64.0803261139260.975 at freddy.simplesystems.org>
> Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
>
> On Wed, 26 Mar 2008, Kai-Uwe Behrmann wrote:
> > Well, it's not so comfortable to have a CMM forcing Oyranos to mention
> > this one, while Oyranos itself is liberal about that.
>
> Yes, the situation is much better for an application than for a
> library.
>
> > So other options might fit better.
>
> The most obvious option is to apply pressure to get the license
> changed on the existing library.
>
> Bob
> ======================================
> Bob Friesenhahn
> bfriesen at simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
> GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
>
>
>
> ------------------------------
>
> _______________________________________________
> openicc mailing list
> openicc at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/openicc
>
> End of openicc Digest, Vol 24, Issue 21
> ***************************************
>
More information about the openicc
mailing list