[Digikam-devel] [Bug 220454] New: Over-Exposure and Under-Exposure indicators do not work correctly in White Balance dialogue

[Richard Ash]

https://bugs.kde.org/show_bug.cgi?id=220454

           Summary: Over-Exposure and Under-Exposure indicators do not
                    work correctly in White Balance dialogue
           Product: digikam
           Version: unspecified
          Platform: Gentoo Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: digikam-devel at kde.org
        ReportedBy: richard at audacityteam.org


Version:           1.0.0-beta6 and 1.0.0 (using KDE 4.3.3)
Compiler:          gcc (Gentoo 4.3.4 p1.0, pie-10.1.5) 4.3.4 Affects amd64 and
x86 builds.
OS:                Linux
Installed from:    Gentoo Packages

1 Load a RAW file (any from Canon 450D) into Image Editor (not using Raw Import
Tool, 16 bit colour, camera white balance, rebuild highlights mode, auto
brightness enabled). Image at this point normally has no saturated areas.
2 Choose White Balance tool from the Color menu.
3 Raise the Exposure Compensation value so that the light areas of the image
become saturated white.
4 Click on the over exposure indicator at the top right of the image.

I would expect step 4 to turn the over-exposed areas of the image black, as
selected in the preferences as the over-exposure colour. However in 1.0.0-beta6
and 1.0.0 release, a few random pixels may turn black, but they have no
correlation to the over-exposed parts of the image, which will remain the
over-exposed white they were before.

The same problem occurs with the under-exposure indicator, with a pattern of
dots which look like the wrong image is being used to generate the mask or
something.

This worked correctly in versions up to 1.0.0-beta5 and is still fine now I
have reverted back to that version (but re-compiled from source today, so the
offending change is in digikam not a library).

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