[Digikam-users] demosaicing white balance method camera

Gilles Caulier caulier.gilles at gmail.com
Tue Aug 2 05:44:49 BST 2011


Good question. libraw used by libkdcraw and finally digiKam is the dcraw API
(but not only).

In libkdcraw, there are some dcraw like command line tool to check
functionalities.

Try to process your RAW file with it and look traces. It's the same than
dcraw ?

Gilles Caulier

2011/8/2 Sven Burmeister <sven.burmeister at gmx.net>

> Hi!
>
> If I use dcraw with -w (camera white balance) to demosaic a RW2 file it
> shows
> the following:
>
> dcraw -w -v P1030225.RW2
>
> Scaling with darkness 15, saturation 4095, and
> multipliers 1.901141 1.000000 1.745247 1.000000
>
> If I open the same image in digikam's image editor (2.0) with "white
> balance
> method" set to "camera" the debug output shows:
>
> Scaling with darkness 0, saturation 4080, and
> multipliers 1,000000 0,526000 0,918000 0,526000
>
> Should those not be the same numbers as above?
>
> Sven
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