Hi,

Damn... I was hoping this would never happened.

The filter is right. ICC spec states pseq is a *required* tag for 
devicelink profiles. Seen from this perspective the devicelink generated
by icclink is not 100% compliant, and thus it can be legitime to refuse it.

But back to real world, pseq is just an informative tag that holds 
textual information about the profiles involved in the linking. The CMM
needs not this info for anything but to display a nice notice. Even more, 
many CMM does not require it at all (lcms, for example). At that point,
and since lcms can generate devicelinks not coming from profiles, I decided to
avoid the tag. A bad move.

Ok, I'm going to add it. Since that is a minor change, I could also pack some 
recent fixups and make a new release. I'm sending another message on this 
subject.

As a temporary workaround, you could apply this devicelink to TIFF files 
by using tifficc utility:

tifficc -l devicelink.icc tiffin.tif tiffout.tif

I will try to have the new release with this fixed in a few.

P.D. Very glad to have you here. For those of you that don't know him, Jan-Peter
is a very knowledgeable color guru, author of several books on color management :-)

Best regards,
Marti Maria.
 

----- Original Message ----- 
From: "Jan-Peter Homann" <[EMAIL PROTECTED]>
To: "Marti Maria" <[EMAIL PROTECTED]>
Sent: Thursday, November 13, 2003 7:46 PM
Subject: Re: [Lcms-user] DeviceLink-Creation for MacOSX


Hi Marti, Hi List
After installing Panther and with help of a friend, Icompiled littlecms 
1.11 and made a devicelink profile incl. blackpoint compensation.

Cool....!!

Unfortynately, the quartz filtes from panther is not accepting the 
profile. The colorsync utility says:

tag: pseq is missing, repairing is not possible.

What is this tag ??

:-) Jan-Peter

Marti Maria schrieb:
> Hi,
> 
> 
>>1) Is it possible to use LCMS as an program for generating DeviceLink 
>>profiles from to CMYK-profiles und MacOSX ?
> 
> 
> Yes. See the icclink program. It works as command line. If you invoke it without 
> parameters, it prints the usage. Here is a copy:
> 
> -----
> little cms device link generator - v1.1
> 
> Links two or more profiles into a single devicelink profile.
> Colorspaces must be paired except Lab/XYZ, that can be interchanged.
> 
> usage: icclink [flags] <profiles>
> 
> flags:
> 
> -o<profile> - Output devicelink profile. [defaults to 'devicelink.icm']
> -t<0,1,2,3> - Intent (0=Perceptual, 1=Colorimetric, 2=Saturation, 3=Absolute)
> -c<0,1,2> - Precission (0=LowRes, 1=Normal, 2=Hi-res) [defaults to 1]
> -d<description> - description text (quotes can be used)
> 
> -b - Black point compensation
> -k<0..400> - Ink-limiting in % (CMYK only)
> -----
> 
> 
> 
>>2) Would it be possible to enable Blackpoint Compemsation for generating 
>>the DeviceLink profile ?
> 
> 
> Yes. Just use the -b toggle.
> 
> 
>>3) If DeviceLink Creation is possible, what would be necessary to make 
>>an real MacOSX application incl. Installer for DeviceLink creation ?
> 
> 
> That is more complex. I assume you mean a GUI based application for 
> easy use. I am not very used to OSX, but shouldn't be too difficult for a 
> Mac programmer. Anyway the command line is not too hard and is a real 
> MacOSX application too.
> 
> Regards,
> Marti Maria
> The little cms project
> http://www.littlecms.com
> [EMAIL PROTECTED]
> 
> 
> ----- Original Message ----- 
> From: "Jan-Peter Homann" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Tuesday, November 11, 2003 5:52 PM
> Subject: [Lcms-user] DeviceLink-Creation for MacOSX
> 
> 
> Hi LCMS-List
> 
> As a non-programmer, I have some questions:
> 
> 1) Is it possible to use LCMS as an program for generating DeviceLink 
> profiles from to CMYK-profiles und MacOSX ?
> 
> 2) Would it be possible to enable Blackpoint Compemsation for generating 
> the DeviceLink profile ?
> 
> 3) If DeviceLink Creation is possible, what would be necessary to make 
> an real MacOSX application incl. Installer for DeviceLink creation ?
> 
> Thank You
> Jan-Peter
> 
> 


-- 
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-                     Neue Adresse                    -
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colormanagement.de ---------- fon/fax +49 30 611 075 18
Jan-Peter Homann ------------- mobile +49 171 54 70 358
Kastanienallee 71 ------- http://www.colormanagement.de
10435 Berlin --------- mailto:[EMAIL PROTECTED]



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