[cairo] [RFC] Color space API (partial proposal)
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>
>>>> 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
>>>> 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.
developing for colour management
www.behrmann.name + www.oyranos.org
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