That's nice mate!
I don't know exactly what you mean by beacons though. But it seems you're chopping up the image then checking pixels counts/areas. Did I get this right?
Viewing post in Javi eats noodles jam comments
Yes that's correct.
When I say "beacon" I mean to say that I have configured a few pixels zones that are very important to draw. In Unity, I made added a few "zones" as gameobjects that are important to recognize the image.
For example, the cat face. I put "important zones (aka beacons)" in the eyes and nose. Because drawing the outline would be as easy as making an oval circle. Therefore, I give extra points if you try to do the eyes and nose.
This is a very reduced explanation, depending on the drawing there are areas of different importance.