[argyllcms] Re: relative colorimetric intent clips channel
- From: Graeme Gill <graeme@xxxxxxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Tue, 10 Nov 2020 22:55:54 +1100
Hermann-Josef Röser wrote:
Hi,
using a scanner profile created with colprof (standard settings) the
rendered image clips in the R-channel if I choose "relative colorimetric" as
intent. Why is this and is there a way to prevent clipping?
I'm guessing that the scan you are using has values that are outside
the gamut (in fact have a higher Y) than that of your test chart.
The test chart white determines the maximum channel values for
a scan profile.
A workaround is to re-create the profile using the -u:
<
https://www.argyllcms.com/doc/colprof.html#u>
or -ua flags:
<
https://www.argyllcms.com/doc/colprof.html#ua>
Hope that helps,
Graeme Gill.
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