Re: Photoshop Gamut warning vs ColorThink
Re: Photoshop Gamut warning vs ColorThink
- Subject: Re: Photoshop Gamut warning vs ColorThink
- From: Klaus Karcher <email@hidden>
- Date: Sun, 24 Feb 2008 13:40:15 +0100
dpascale wrote:
A method with "no tolerance" will tend to reject more colors than what
could be "accepted". For instance, I am willing to live with a 1 Delta-E
difference (any formula you choose) between file and print (and probably
more in many cases). In practice, this means that patches tagged as
clipped with xicclu are acceptable for me when measured, and I verified,
with a test file, that it happens. However, now I know why this happens.
You can define an acceptance threshold with a litle bit of awk voodoo.
This nice little line of code will only baa about colors with Delta E > 5.0:
xicclu -fif -ia -l330 -a /your/profile.icc < /your/colors.txt | awk
'{if($5=="deltaE") {sub(/]/,"",$6); if((0.0+$6) > 5.0) print last ": "
$0 "]"; else next} else last=$0}'
It's a good idea to execute the following line of code on non-English
systems before using awk with xicclu to avoid decimal separator issues:
LANG=C LC_ALL=C; export LANG LC_ALL
Klaus
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