Re: [Gimp-user] Seeking better "green screen" method

[Rob Antonishen <rob antonishen gmail com>]

On Tue, Jan 17, 2012 at 3:17 PM, Jay Smith <jay jaysmith com> wrote:

Is there something like that which can be used to remove a color "halo" that results from using a "green screen" approach to scanning?  (I would likely have to select different colors of "green screen" so that such colors are not included in the design of the postage stamp.

If your background is fairly even, and the colours are different in the stamp, then I had written a script that might work (not having seen a sample image):  http://gimpscripts.com/2011/10/transparent-background/

This will turn the background transparent by matching with the upper left colour of the background, selecting with a tolerance expanding the selection, and doing a colour to alpha as suggested by others.

Give the script a try, ir might have reasonable results.  It works well for me on solid background colours.

-Rob A>