[argyllcms] Re: Dispcal - Inverting Jacobian failed?
- From: "Alastair M. Robinson" <profiling@xxxxxxxxxxxxxxxxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Thu, 21 May 2009 10:01:46 +0100
Hi,
Graeme Gill wrote:
It usually means that the display isn't behaving very well.
I thought it might :)
if the matrix is singular, probably meaning that the measured
color didn't change in response to a change in the RGB value,
ie. you're in a "dead zone" of the display response. This doesn't
help progress much :-(
Well that's consistent with the visible transition I mentioned between
white and the next lightest grey.
The best thing is to try and figure
out what settings give you a progressive output - ie.
that give a different output for each possible RGB input value.
Yup - I shall experiment in due course. I suspect the default settings
would behave well enough - but with those settings I find myself wanting
a welding mask while using the monitor!
Thanks for the explanation of the error message - it confirms what I
suspected about clipping, and also gives me a usable test to check given
monitor settings for such clipping.
All the best,
--
Alastair M. Robinson
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