DrDre said:

For those interested in finding out why multi-frame super resolution is possible, the first chapter of this phd thesis provides some explanations:

http://www.robots.ox.ac.uk/~vgg/publications/papers/pickup08.pdf

As AntcuFaalb correctly pointed out, and as you can see from every example in that paper, you need to have plenty of aliasing for this to work. Fortunately, the GOUT has plenty of that, at least in one dimension! For most sources that are scanned well however, the best you can hope for with such methods is just noise reduction.

-G