[Openicc] Printing profiling targets - state of implementation?

[Michael Sweet]

Edmund,

On 2013-05-20, at 10:46 PM, edmund ronald <edmundronald at gmail.com> wrote:
> Michael, Richard,
> 
>  Thank you very much. 
>  We would appreciate a facility to *temporarily* mark a whole queue as having color management disabled, so one can use normal workflow tools to send stepcharts and targets through when determining inking parameters for  new printer hardware under Gutenprint.   Determining ink limits and linearising a printer can be a painful and repetitive process, but we aim to make it documented and accessible to the expert user, just as on industry RIPs. 

We did talk about how profiling should work, both in this year's OpenPrinting sessions and last year's.  The consensus is that adding a giant "Off" switch to print queues (or the whole printing system) is the wrong way to implement this since a) ordinary applications are not suitable for printing target images and b) having that giant off switch will lead to confusion and bad prints (when you forget to turn color management back on...)

What we *are* planning to do is add a single boolean option that can be used to turn off color management for a given job.  This *will* allow you to run lpadmin/lpoptions to set the default for that option if you like (a giant off switch), but I really don't recommend it...



> 
> Edmund
> 
> On Mon, May 20, 2013 at 10:22 PM, Michael Sweet <msweet at apple.com> wrote:
> Edmund,
> 
> We actually talked about this during the OpenPrinting summit last week; Richard is starting the work needed to make Ghostscript's gstoraster honor a "do not profile" boolean option that applications/toolkits can pass as needed.
> 
> 
> On 2013-05-20, at 4:15 PM, edmund ronald <edmundronald at gmail.com> wrote:
> 
>> Hi Guys, 
>> 
>> 
>>  Some time ago, it was decided to provide a color management bypass for printing profiling targets and other such purposes.  Has this now been done, and if so, how does one invoke this?
>> 
>> Edmund
>> 
>>  
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> 
> _________________________________________________________
> Michael Sweet, Senior Printing System Engineer, PWG Chair
> 
> 
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_________________________________________________________
Michael Sweet, Senior Printing System Engineer, PWG Chair

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