2007.10.23 17:21 "Re: [Tiff] Floating-point 32bit sample data", by Joris Van Damme
Are floating point RGB data stored gamma corrected or linearized?
The data is best stored in a linear matrix space, much like camera RAW. OpenEXR even suggests now to use XYZ instead of RGB.
Only, there isn't a photometric value for it.
RGB, without embedded ICC profile, is mostly agreed upon to mean sRGB. Another and probably more unambigious way to store color data, even if I feel RGB is regarded sRGB by just about anyone, is CIE L*a*b*, and there's a proper photometric for that one and a totally unambigious scale and meaning for floating point CIE L*a*b* data.
Joris Van Damme
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