[Digikam-devel] [Bug 224293] New: wavelets NR tool confuses red and blue

[S. Burmeister]

https://bugs.kde.org/show_bug.cgi?id=224293

           Summary: wavelets NR tool confuses red and blue
           Product: digikam
           Version: unspecified
          Platform: openSUSE RPMs
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: digikam-devel at kde.org
        ReportedBy: sven.burmeister at gmx.net


Version:           1.1.0 svn (using KDE 4.3.4)
OS:                Linux
Installed from:    openSUSE RPMs

svn Rev: 1079999


I noticed a lot of blue spots in the black areas and thus set luminance and
Chrominance red to 0, i.e. only used Chrominance blue, yet the blue spots did
not go away. Then I set blue to 0 and red to some value >0 and the blue spots
disappeared.

So here is my dumb question, am I wrong assuming that red should get rid of the
red spots and blue of the blue ones and that there is a bug that those two are
interchanged?

Then I thought that maybe a treshold of 0 means that it will erase all kinds of
blue. Yet if I set both red and blue to 0 I get more blue noise compared to
blue set to 0 and red to some value >0. Which seems odd as I did not change any
value for blue thus blue noise should stay at the same level.

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