The camera is automatically calibrated, revealing its location and orientation (take a look at, this scene, the position and orientation of the camera is automatically generated, which closely matches the real webcam image).
The group has been archiving 1000 webcams for the past four years, as the Archive of Many Outdoor Scenes. If the user gives Live3D an AMOS camera, the application can re-texture the scene based on time-lapse imagery. So, you can see what the scene looked like a week, a month, or a year ago.
Urban scenes seem to work particularly well, because billboards and other advertisements aren't as static as the Sketchup models suggest. For example, the model for Times Square still advertises Spiderman 3.
To see if live goto: http://amos.cse.wustl.edu/