[Openicc] meta data in test chart

[Chris Murphy]

On Jan 25, 2011, at 12:26 AM, Kai-Uwe Behrmann wrote:

> Am 25.01.11, 00:19 -0700 schrieb Chris Murphy:
> ...
>> I'd have them look at OpenEXR which has 16bpc and 32bpc floating point implementations for HDR images, and just use the Rec 709 primaries (same as sRGB).
> 
> OpenEXR still recommends CIE*XYZ as the default colour space primaries,
> of course with linear gamma.

From what I see here:
http://www.openexr.com/TechnicalIntroduction.pdf

chromaticities can be defined for RGB. If they are undefined the document says to assume Rec 709 primaries. Even if the intent is to encode XYZ, actual encoding is RGB while requiring chromaticities to be defined such that RGB is interpreted as XYZ.

Chris Murphy