[argyllcms] Re: Yellow-ish rendering of greens out of bounds / slight red issue
- From: Graeme Gill <graeme@xxxxxxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Wed, 17 Feb 2016 18:18:15 +1100
Derin Korman wrote:
Hi,
It seems that certain greens (in this case the fourth color patch starting
from red) turn very yellow compared to other profiling solutions.
What is the source colorspace and patch values ?
Your .jpg shows the "original" 4th and 5th patches as identical RGB
values, but there is no profile tag for this file.
It's not possible to investigate without this information.
If you
check the Hue values, the others more or less preserve the hue while
ditching more saturation, but the end result looks perceptually more
similar. Strangely, if I convert with perceptual colorimetric, this problem
disappears.
That does sound strange.
https://www.dropbox.com/s/5a4930qadrlz6ky/argyllcomparison.jpf?dl=0
There is also this problem with deep reds that keeps cropping up regardess
of device and profiling parameters
It looks more like shadows being exaggerated, but again, without the
source image and its colorspace, there's not much I can do.
Graeme Gill.
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