[Openicc] Extra metadata keys for review

[Kai-Uwe Behrmann]

Am 06.05.12, 11:09 +0100 schrieb Richard Hughes:
> On 6 May 2012 08:58, Chris Lilley <chris at w3.org> wrote:
>> I am happy to help wordsmith more precise text.
>
> That would be most appreciated. Thanks.
>
>> RH> STANDARD_space          A standard space, where "srgb" -> sRGB; "adobe-rgb" ->
>> RH> AdobeRGB; "prophoto-rgb" -> ProPhotoRGB
>>
>> Is this a complete list, or three examples (thus, others can extend it with other tokens like ECI-rgb)? If it is an extensible list, where is the registry (so two users don't come up with different tokens for the same space)?
>
> I figured that the spec would list all the options. In colord we have
> an API where the program can say "give me the profile that is marked
> as adobe-rgb'" so you can use profiles supplied by the distro or from
> another proprietary package. I just listed the common colorspaces, and
> chose to delimit spaces with '-' and used all lower case. I don't
> think we need to list *all* colorspaces here, just the common ones we
> want people to actually use.
>
>> Does 'standard' mean 'standardised somewhere' or 'commonly used' or (looking at DATA_source below) does it mean 'this is where I got the numbers from, for this profile that was not produced by calibration)?
>
> standard == known and well used colorspace standard, such as AdobeRGB
> or ProPhotoRGB.

The following page lists some definitions:
http://www.color.org/chardata/rgb/rgb_registry.xalter
e.g.:
http://www.color.org/chardata/rgb/srgb.xalter
http://www.color.org/chardata/rgb/adobergb.xalter

A simple usage would be to just use that link for the reference:
"STANDARD_space": "http://www.color.org/chardata/rgb/srgb.xalter"

The advantage is, these values/URL's are already defined and possibly 
shared.

kind regards
Kai-Uwe