This is pretty amazing, like 'davnicwil said. Personally though, the coolest thing about this is how easy it is to make if you have some way to make the mask.
It uses a Raspberry Pi Camera Module[1], which is $30, with no modifications other than removing the lens and adding the mask.
I wonder if you could make a mask by machining plastic down very thin, and then punching tiny holes through with the smallest endmill you could find.