[Digikam-devel] [Bug 312551] New: showFoto displays camera jpegs with AdobeRGB DCF information with a blue color cast

[Elle Stone]

https://bugs.kde.org/show_bug.cgi?id=312551

            Bug ID: 312551
           Summary: showFoto displays camera jpegs with AdobeRGB DCF
                    information with a blue color cast
    Classification: Unclassified
           Product: digikam
           Version: 2.9.0
          Hardware: openSUSE RPMs
               URL: http://ninedegreesbelow.com/temp/digikam-DCF-bug-repor
                    t.html
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: Color Management
          Assignee: digikam-devel at kde.org
          Reporter: l.elle.stone at gmail.com

When opening a digital camera jpeg with embedded Adobe RGB DCF information, the
image is displayed with a strong blue color cast. When opening a digital camera
jpeg with embedded sRGB DCF information, the image is displayed correctly. When
saving the images, the Adobe image gets a scarse adobe profile. The sRGB image
gets an lcms-generated profile. 

Using Gimp to assign "ClayRGB.icm" to the Adobe camera jpeg makes the image
display correctly.

Reproducible: Always

Steps to Reproduce:
1. Use showFoto to open a digital camera jpeg with embedded DCF Adobe color
space information.
2. Look at the image.
3. Save the image.
Actual Results:  
The image is displayed with a strong blue color cast.

Expected Results:  
The image shouldn't have a color cast.

>From the Canon 400D camera jpeg:
Interoperability Index          : R03 - DCF option file (Adobe RGB)

After saving with showFoto:
Red Matrix Column               : 0.57668 0.29735 0.02704
Green Matrix Column             : 0.18556 0.62737 0.07069
Blue Matrix Column              : 0.18823 0.0753 0.99135

Those don't look like the right primaries for AdobeRGB-like profiles.

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