the data has no TRC, i.e. is linear
this is a gray component model
the encodings described are CMYK encodings, the space associated is expected to contain an CMYK ICC profile.
the model encodes alpha.
the data has a TRC - the TRC from the configured space
this is an RGB based component model, the space associated is expected to contain an RGB matrix profile.
the alpha is associated alpha.
the data has a TRC - a perceptual TRC where 50% gray is 0.5
the components are inverted (used for getting the additive complement space of CMYK).
this model is part of the CIE family of spaces