Re: [Gimp-docs] Color to alpha

[Ell <ell_se yahoo com>]

On 5/30/19 6:55 PM, Ell via gimp-docs-list wrote:
> The transparency and opacity thresholds control how close colors should
> be to the background color before they become fully transparent, and how
> far they should be from the background color before they remain fully
> opaque, respectively.  With the default values of 0 and 1, only the
> background color becomes fully transparent, and only the colors farthest
> away from the background color remain fully opaque.

I forgot to mention that the color pickers next to the transparency and
opacity threshold options let you set their value by picking a color
from the image, and calculating its distance from the background color
automatically.

--
Ell