If your not familiar with Photosynth I put up a post awhile back that shows what it is all about.

Back when I first saw it I realized it was deriving point cloud data from the images and thought it would be interesting if we could get that raw data set. Well we can't get it directly but Kean Walmsley over at the Through the Interface blog has a write up showing how it can be obtained. I can not wait to start playing with this.
Links:
Background - Reality check
Code Part 1 - Importing Photosynth point clouds into AutoCAD 2011
Code Part 2 - Importing Photosynth point clouds into AutoCAD 2011

Source: http://through-the-interface.typepad.com/through_the_interface/