Re: [Lcms-user] icclink - device Link profiles usage

2006-01-25 Thread Marti


Hi,


I tried using jpegicc for softproof and had no success with tho following:

jpegicc -m3 -p cmyk.icc sRGB.jpeg sRGB_softproof.jpeg



You are right. There is a bug in jpegicc that prevents softproofing. Thanks 
for let me know.


Here is a fixup:

File jpegicc:

  hProof = NULL;
if (cProofing != NULL) {

 hProof = OpenStockProfile(cProofing);
}
   }

Replace by:

  hProof = NULL;
if (cProofing != NULL) {

 hProof = OpenStockProfile(cProofing);
 dwFlags |= cmsFLAGS_SOFTPROOFING;
}
   }


I'm adding it to master sources.

Regards
Marti Maria
The littleCMS project
http://www.littlecms.com




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Re: [Lcms-user] icclink - device Link profiles usage

2006-01-14 Thread Thorsten Krug

Hello again,
What about using abstract profiles?
I have problems understanding the Syntax of icclink.
There is an Example in the manpage:

   icclink -t1 -x -o softproof.icc *Lab cmyk.icc cmyk.icc *Lab

I creates an abstract profile.
I tried to adapt it to use with sRGB-image-data, finding out, that I 
actually don´t understand it.


Can you tell me how the order in the mentioned Example leed to a proof?

While experimenting the resulting profile switched between Abstract and 
DeviceLink-Profile.


How can I ensure to have an (embedable) Abstract profile as result?

Thanks

Thorsten

Marti schrieb:


Hi,


In theorie i would:
- transform source to simmulation with perceptual intend - step 1
- transform step 1 to output with absolute rendering intent (I want to
simmulate th paper whitepoint)



This would almost work. Is just a little bit more
complex, as the softproof requires mixing intents.

The complete workflow would be something like:

Input(RGB)- [Perceptual] - Proof(CMYK)
Proof(CMYK) - [Rel.colorimetric] -Proof(Lab)
Proof(Lab) - [Abs.colorimetric] - Output(RGB)

lcms implements that by the softproofing transform, which takes
care of all the details (BP compensation, gamut check and so)

Current version of icclink does NOT uses this kind of color
transforms, so you have to write a small program in order to embed
this transform into an ICC devicelink.

Having said that, maybe a devicelink is not your best option, as
you plan to use it as input profile (W3C doesn't allow devicelinks
AFAIK)

Hope this helps
Marti Maria
The littleCMS project
http://www.littlecms.com



- Original Message - From: Thorsten Krug [EMAIL PROTECTED]
To: lcms-user@lists.sourceforge.net
Sent: Monday, December 19, 2005 7:01 PM
Subject: [Lcms-user] icclink - device Link profiles usage



Hello,

I´m not sure, if i do understand the device-link-profiles (DLP) in the
right sense. My idea is to use a DLP for a proof scenario:

- I have a picture coded in sRGB (source-color-space)
- I want so simmulate a CMYK-print-process e.g. Euroscale-Coated
(simmulated-color-space)
-I want to display it on my output-device: a sRGB-Monitor
(output-color-space)

In theorie i would:
- transform source to simmulation with perceptual intend - step 1
- transform step 1 to output with absolute rendering intent (I want to
simmulate th paper whitepoint)


My Questions are:
- can I create such a chain with icclink by commandline?
- Can someone give me some hints for icclink
- how do I use the DLP? I want to use it within profile-tag of W3C´s
CSS3-Spec, but threr is no browser at this time, to support these Tags.
- or did I get on the wrong track and misinterpreted the use of DLP

Thanks



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Re: [Lcms-user] icclink - device Link profiles usage

2005-12-21 Thread Marti



Hi,


In theorie i would:
- transform source to simmulation with perceptual intend - step 1
- transform step 1 to output with absolute rendering intent (I want to
simmulate th paper whitepoint)



This would almost work. Is just a little bit more
complex, as the softproof requires mixing intents.

The complete workflow would be something like:

Input(RGB)- [Perceptual] - Proof(CMYK)
Proof(CMYK) - [Rel.colorimetric] -Proof(Lab)
Proof(Lab) - [Abs.colorimetric] - Output(RGB)

lcms implements that by the softproofing transform, which takes
care of all the details (BP compensation, gamut check and so)

Current version of icclink does NOT uses this kind of color
transforms, so you have to write a small program in order to embed
this transform into an ICC devicelink.

Having said that, maybe a devicelink is not your best option, as
you plan to use it as input profile (W3C doesn't allow devicelinks
AFAIK)

Hope this helps
Marti Maria
The littleCMS project
http://www.littlecms.com



- Original Message - 
From: Thorsten Krug [EMAIL PROTECTED]

To: lcms-user@lists.sourceforge.net
Sent: Monday, December 19, 2005 7:01 PM
Subject: [Lcms-user] icclink - device Link profiles usage



Hello,

I´m not sure, if i do understand the device-link-profiles (DLP) in the
right sense. My idea is to use a DLP for a proof scenario:

- I have a picture coded in sRGB (source-color-space)
- I want so simmulate a CMYK-print-process e.g. Euroscale-Coated
(simmulated-color-space)
-I want to display it on my output-device: a sRGB-Monitor
(output-color-space)

In theorie i would:
- transform source to simmulation with perceptual intend - step 1
- transform step 1 to output with absolute rendering intent (I want to
simmulate th paper whitepoint)


My Questions are:
- can I create such a chain with icclink by commandline?
- Can someone give me some hints for icclink
- how do I use the DLP? I want to use it within profile-tag of W3C´s
CSS3-Spec, but threr is no browser at this time, to support these Tags.
- or did I get on the wrong track and misinterpreted the use of DLP

Thanks




--
_

Thorsten Krug
Vereinstr 29
51103 Köln
fon: 0221-759 12 92
mobil: 0177-53 87 924
e-mail: [EMAIL PROTECTED]
_



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