Here's just a few implementations of computational photography:
Focus stacking :) where you can use an open source program like
CombineZM to stack multiple images with different focus to result in a neat output.
You can download the compiled exe right
here then all you need is the
dll in the same directory to get started.
Another awesome thing you can do is computationally create stroboscopic images using a set of photos! Normally to do this it would require a strobe and generally a dark background, but you can do it pretty quickly on a computer that is set up to compare photographs. Check out page 6 of this
pdf if you want to see what I mean.
I tried it too. I started with a wmv file that I cut up with PowerDirector. Then I used CombineZM to dump all the frames. After that I used
fuse to stack the images. I think I need some other video to work with because of the way the motion stacks on top of itself, and there's too much ghosting to look like a normal stroboscopic image.
There's a bunch of nice papers over at
wikipedia on the subject.