I did a presentation on shape from shading (SfS) earlier today - really just the relevant section from my PhD thesis converted into slides, and updated with some new stuff. Not sure how much sense it makes without me there to talk through it, and draw pictures to make up for all the bits I forgot to put into the slides, but then its been 3 years since I worked on SfS, so I'm not entirely sure how much of it makes sense to me with all the knowledge that is apparently contained within my head!

Regardless, if anyone wants some (rather rapidly produced, and hence rather rough) slides about SfS, here you go:

A Rough Guide to Shape from Shading