[argyllcms] Re: Dell U2711 and i1Display Pro - ArgyllCMS vs i1Profiler

  • From: Gerhard Fuernkranz <nospam456@xxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Sat, 24 Nov 2012 16:22:04 +0100

Am 24.11.2012 15:47, schrieb Tom Schumm:
I know Matrix profiles are less accurrate, but are they supposed to be that far 
off?

Not necessarily. It depends on the device. A matrix model assumes a perfectly 
additive device.

If the device _is_ perfectly additive, then it can be modelled _exactly_ by a 
matrix profile either (within the limits of device repeatability and 
measurement accuracy).

However, if the device is not additive, then a matrix model can't describe the 
device behaviour exactly, but can only approximate it (think of approximating a 
curve by a straight line - depending on the curve shape, the line will 
approximate the curve better or worse).

Best Regards,
Gerhard


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