Don't know if this will help.
I was thinking they held the map in an area that could be rotated then take a lot of slices of that rotated map then stacked those slices adjusting for perspective. I can't remember the command for taking a part of an image but I know that it can be stretched or shrunk. I was going to try it when I have enough time. I think it will work as fuze is very fast.
Probably image !!!