[Gimp-user] change background in photo to grey scale

[PeterJWhite <forums gimpusers com>]

> 0. Make sure the Layers dockable dialog is visible:
>      Windows/Dockable Dialogs/Layers
> 1. Duplicate the original layer: Layer/Duplicate Layer
> 2. Rename the duplicated layer Bkg (dbl click in layers dialog)
> 3. Move the duplicated layer below the original
> 4. Select the original layer
> 5. Add an alpha channel: Layer/Transparency/Add Alpha Channel
> 6. Convert your mask to a selection / select the background or
> foreground
> 7. If your mask/selection is for the foreground, invert it:
> selection/Invert
> 8. Edit/Clear  This will make the background parts transparent
>
> Your foreground is now in the top layer, and the background in the one
> underneath labelled Bkg.

Thanks to you both. It's working.

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