profile connection in appearance matching
I'm talking in terms of the icc, http://www.color.org/
but it could apply to any device independent color system if you talk about "color" matching, it seems to me that absolute colormetry should be the correct approach, this is simply measured and a simple cmm can connect device colors to and from the absolute and static profile connection space if you are talking about "appearance" matching, an absolute color profile connection space and a simple cmm do not apply I think, each device and ideally its device profile have its own appearance considerations and the cmm has to connect the "appearances" through the profile connection space with those "appearance" considerations it would seem to me that the correct approach is for the cmm to instantiate a profile connection space based on the input and output "appearance" considerations at the time of connection, the instantiation could be an event-loop or an OO approach or whatever, but according to CIECAM02, LMS color space is involved http://en.wikipedia.org/wiki/CIECAM02 -- Dale |
profile connection in appearance matching
On Tue, 16 Sep 2014 15:37:30 -0400, Dale
wrote: I'm talking in terms of the icc, http://www.color.org/ but it could apply to any device independent color system if you talk about "color" matching, it seems to me that absolute colormetry should be the correct approach, this is simply measured and a simple cmm can connect device colors to and from the absolute and static profile connection space if you are talking about "appearance" matching, an absolute color profile connection space and a simple cmm do not apply I think, each device and ideally its device profile have its own appearance considerations and the cmm has to connect the "appearances" through the profile connection space with those "appearance" considerations it would seem to me that the correct approach is for the cmm to instantiate a profile connection space based on the input and output "appearance" considerations at the time of connection, the instantiation could be an event-loop or an OO approach or whatever, but according to CIECAM02, LMS color space is involved http://en.wikipedia.org/wiki/CIECAM02 I notice icc has rimm and romm (reference input/output) medium metrics that have components of appearance similiar to CIECAM02, but they don't have a reference for display I also gather the reference spaces are a high gamut film shouldn't they just get rid of the references and go with a full appearance models that instaniates a profile connection space based on i/i paramaters, should this requires a more complex measurement paradigm, and maybe "good enough" is "good enough" just a thought -- Dale |
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