I got a question about DeviceLink. I got a RGB to CMYK DeviceLink. I want control some transformations.
Is it possible to specify an input RGB color and output CMYK color associate ?
I know how create a DeviceLink, but i don't know how specify specific colors :
By exemple : I got a RGB color gray( 128 128 128)and i want specify in the output device link, that
this RGB color will be transform in a CMYK color cyan (100% 0 0 0 ).
Is it possible ?
Thanks a lot,
Am 12.09.12, 07:54 -0000 schrieb PILLET Céline:
> I know how create a DeviceLink, but i don't know how specify specific colors :
> By exemple : I got a RGB color gray( 128 128 128)and i want specify in the output device link, that
> this RGB color will be transform in a CMYK color cyan (100% 0 0 0 ).
> Is it possible ?
That means you need a profiler to create a ICC profile for you.
Which can later be used by a profle linking tool. Typical
that involves creation of a CGATS text file, which contains the
colour association. But those CGATS files are most often created in a
automatic way and are not recommended to create by hand by novel users.
In case you are still interested look at ArgyllCMS:
A other way, is to provide the table entries of the colour transform
yourself and create a ICC profile. lcms has API's for doing this on the
appropriate low level. Using such API for your purpose involves
interpolating the colours in a programmatic way.
See the API in lcms2.h under cmsStageSampleCLut16bit() and in the manual.
developing for colour management
http://www.behrmann.name + http://www.oyranos.org
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