Just found it!
Click to download this software (but only today!!!) if you are interested?
Interesting! Thanks for the share. I've been looking for some sort of decent generator for free. :P
As a note, you have to download and install the software today in order to receive the Serial and register it.
Though it seems this just creates images, goof for LOD I guess. You just "paint" a random generated trunk design, and than paint on leaves in the foreground and background.