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From: Graeme G. <gr...@ar...> - 2005-10-15 00:11:13
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Marti wrote: > lcms does currently NOT implement it because it is not on ICC spec. > Alas, I'm a bit critical on such practices. Using this kind of stuff will > make profiles "active" in the sense they are no longer a characterization > of the hardware but a way to set specific configurations. You're quite right about this. vgct is not the correct approach to calibration. What should happen is that the profile should contain the desired device response in the outputResponseTag, and some separate system should calibrate the hardware to make sure it meets the expected response for a given display profile. This provides a mechanism to track device drift. Unfortunately we're stuck with software systems that expect the vgct tag to be present (Apple systems won't load the profile if the tag is missing), even though it no longer captures all the settings of a modern display system, such as the monitor controls etc., and is the wrong information to store in a profile .... Graeme Gill. |