[Gimp-user] Gimp channel mixer

[Oxonian <forums gimpusers com>]

> Going for a beer sounds good to me.
>
> There are image formats where the file contains both the image and a
> thumbnail used by some applications to show the image quickly usually
> for selection. That is what you have. Two solutions, trial and error
> to determine the full image or open both and delete the unwanted
> layer.
>
> quote...I'm trying to use the GIMP channel mixer to reverse the red
> and green channels in a TIF image. I'm using GIMP 2.9.6
>
> Might not be as simple as the channel mixer, One way is decompose the
> image to RGB layers.
>
> Duplicate the decomposed image and copy/paste Red from no2 to Green in
> no1.  Green from no 2 to Red in no1
>
> Recompose the first decomposed image.

-- 
Oxonian (via www.gimpusers.com/forums)