Bug 404667

Summary: Bug of proofing for illuminant A and color cast
Product: [Applications] digikam Reporter: Aleksei Korobov <koraalex>
Component: ColorManagement-CoreAssignee: Digikam Developers <digikam-bugs-null>
Status: RESOLVED FIXED    
Severity: normal CC: caulier.gilles
Priority: NOR    
Version First Reported In: 5.9.0   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: https://invent.kde.org/kde/digikam/commit/4c776e71306f10fed44f4797f9d922bf092308ac Version Fixed/Implemented In: 7.0.0
Sentry Crash Report:
Attachments: Argyll-made low quality RGB printer ICC profile for illuminant A

Description Aleksei Korobov 2019-02-21 23:51:51 UTC 
SUMMARY

I've made 3 similar Windows RGB printer ICC profiles for illuminants D65, D50 and A using Argyll. Showfoto shows generally correct proofing for D65 and D50, but shows orange image for A that is quite old one (tunstgen light 2850K). I've also found that proofed images has some cast comparing to GIMP/Photoshop/ACDSee.

STEPS TO REPRODUCE
1. Investigate the module for bugs and math errors. 
 

OBSERVED RESULT


EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: 
MacOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION
Comment 1 caulier.gilles 2019-02-22 09:07:10 UTC 
Can you share the ICC profile which make the dysfunction ?

Gilles Caulier
Comment 2 caulier.gilles 2019-02-22 09:07:48 UTC 
The problem still reproducible with 6.0.0 version just released ?
Gilles Caulier
Comment 3 Aleksei Korobov 2019-02-23 07:07:14 UTC 
Created attachment 118314 [details]
Argyll-made low quality RGB printer ICC profile for illuminant A

-
Comment 4 Aleksei Korobov 2019-02-23 07:08:13 UTC 
Yes, the problem still exists in 6.0.0. The profile for illuminant A is attached. I had the same result with another profile for illuminant A. But when I create similar profile for D50 or D65, I get right proofing (though I find little cast comparing to GIMP etc.).
Comment 5 Maik Qualmann 2019-11-16 21:28:15 UTC 
Git commit 4c776e71306f10fed44f4797f9d922bf092308ac by Maik Qualmann.
Committed on 16/11/2019 at 21:27.
Pushed by mqualmann into branch 'master'.

fix applying the rendering method
FIXED-IN: 7.0.0

M  +2    -1    NEWS
M  +2    -0    core/libs/dimg/filters/icc/iccmanager.cpp

https://invent.kde.org/kde/digikam/commit/4c776e71306f10fed44f4797f9d922bf092308ac