Create HSL sensitive bubbles and bubbles holes in your pictures. Modifiable.
These filters were the ancestors (the first steps on the way) of the "Bump your Picture" ones.
The alternate ones in the file were another solution to add HSL sensitive bubbles. Perhaps softer and less effective in some cases, but I place them here because their evolution could give something else interesting too.
DON'T BE WORRY if at the moment, the navigators are unable to display correctly most of my filters. Inkscape display them nicely and export them as you see here. My first wish while creating these filters is to improve Inkscape illustration capabilities.
ivan