Created by Karl D.D. Willis, Trace Modeler is an application that uses real-time video to create three-dimensional geometry. The silhouette of a foreground object in a video frame is subtracted from the background and used as a two-dimensional slice. At user-defined intervals new slices are captured and displaced along the depth axis. The result is a three-dimensional model defined by silhouette slices over time.
(re-descovered via Cedric Kiefer)