[cairo] [RFC] Color space API (partial proposal)

Kai-Uwe Behrmann ku.b at gmx.de
Sun Apr 18 04:30:13 PDT 2010

Am 25.02.10, 13:51 +0100 schrieb Arjen Nienhuis:
> On Thu, Feb 25, 2010 at 11:51 AM, Adrian Johnson <ajohnson at redneon.com> wrote:
>> ecir hana wrote:
>>> On Wed, Feb 24, 2010 at 12:52 PM, Adrian Johnson <ajohnson at redneon.com>
>>> wrote:
>>>> After looking at the ICC specification it should be possible for the PDF
>>>> backend to generate a tint transform from an ICC profile for a DeviceN
>>>> color
>>>> space and an ICC profile for the alternate color space.
>>> Could you please describe this in more detail? How does the mechanism
>>> of "generate a tint" works? And how exactly should a user proceed?
>> On IRC Andrea pointed out that ICC profiles can contain named colors. After
>> reading about named colors in the ICC specification I don't think  we don't
>> need any special API for DeviceN colors. Just use the named ICC profile as
>> you would for any other color space.
>> For example if you wanted to use a 6 component DeviceN color space you would
>> need a named ICC profile with 6 channels. The profile contains the names of
>> each of the 6 colorants and an ICC profile for translating the device colors
>> to the profile connection space.
> Where can I get these profiles?

They would be need to get contructed. In ICC Examin is code and I guess 
several more CM packages do this.

kind regards
Kai-Uwe Behrmann
developing for colour management 
www.behrmann.name + www.oyranos.org

More information about the cairo mailing list