| Summary: | showFoto displays camera jpegs with AdobeRGB DCF information with a blue color cast | ||
|---|---|---|---|
| Product: | [Applications] digikam | Reporter: | Elle Stone <elle> |
| Component: | ColorManagement-Profiles | Assignee: | Digikam Developers <digikam-bugs-null> |
| Status: | RESOLVED FIXED | ||
| Severity: | normal | CC: | caulier.gilles, ellestone, metzpinguin, vivo75+kde |
| Priority: | NOR | ||
| Version: | 2.9.0 | ||
| Target Milestone: | --- | ||
| Platform: | openSUSE | ||
| OS: | Linux | ||
| URL: | http://ninedegreesbelow.com/temp/digikam-DCF-bug-report.html | ||
| Latest Commit: | Version Fixed In: | 5.8.0 | |
| Attachments: | A solid white test jpeg. | ||
|
Description
Elle Stone
2013-01-03 16:20:35 UTC
To reproduce here, we needs original image and color profile files. Also, which version of lcms you use ? Go to Help/Components Info for details. Which CPU you use ? Gilles Caulier On 1/3/13, Gilles Caulier <caulier.gilles@gmail.com> wrote: > To reproduce here, we needs original image and color profile files. The image files and the ClayRGB1998.icm profile can be downloaded from here: http://ninedegreesbelow.com/temp/digikam-DCF-bug-report.html > Also, which version of lcms you use ? I have lcms 1.19 and lcms2 2.4 installed on my system. showFoto is using 1.19. I put the full components information in the web page. > Which CPU you use ? I'm not sure what you mean by CPU. The CPU on the motherboard is an AMD opteron 252 processor, single core, 64-bit. Elle Created attachment 81812 [details]
A solid white test jpeg.
This is a solid white test jpeg. All RGB values are (255,255,255). When a proper ICC working space profile is assigned to this image, it should look white, not blue-green.
It seems that digiKam/Showfoto properly reads the embedded metadata to detect that the image is supposed to be in the Adobe color space. The problem seems to be that digiKam/Showfoto then assigns this color space profile: /usr/share/apps/libkdcraw/profiles/adobergb.icm. That adobe profile is defective. It uses non-adapted primaries (http://brucelindbloom.com/ - read down to the section called "Adapted Primaries"). If you assign this defective adobe profile to a solid white jpeg (see attached solid white test jpeg), the jpeg will turn blue-green. Two other profiles in the libkdcraw/profiles folder are also defective in the same way: applergb.icm and srgb.icm both have unadapted primaries and will turn a solid white jpeg blue-green if assigned. I replaced the defective adobe profile with the argyllcms "clayrgb" profile (changing the name), and Showfoto then properly opened a test camera-generated jpeg that was saved in the adobe color space. Elle, This problem still valid using last digiKam 4.2.0 ? Gilles Caulier (In reply to Gilles Caulier from comment #5) > Elle, > > This problem still valid using last digiKam 4.2.0 ? > > Gilles Caulier Gilles, unfortunately digikam 4.2.0 is hard-masked in Gentoo portage and my efforts to install it locally failed with errors. So I can't check. My apologies! This problem still reproducible with digiKam 5.0.0 ? Gilles Caulier What's about this file using digiKam AppImage bundle 5.4.0 pre release given at this url : https://drive.google.com/drive/folders/0BzeiVr-byqt5Y0tIRWVWelRJenM Gilles Caulier (In reply to caulier.gilles from comment #7) > This problem still reproducible with digiKam 5.0.0 ? > > Gilles Caulier Checking digiKam 5.7.0, this no longer appears to be a problem. I seem to recall the actual problem was with profiles supplied by some other KDE package, and those profiles have been fixed. My apologies for taking so long to check digiKam - I had completely forgotten about this bug report. Thanks for the feedback. Maik |