MAKE pals over at iFabricate have a project I didn’t notice until now– Create your own super hi-tech 3-D laser scanner. Using just a laser pointer, wine glass, rotating platform, and a digital video camera, you can make accurate 3-D models of a object or person. Convert the video to an avi. Use an edge detection algorithm to find the location of the laser line. Reconstruct your 3-D model. Link.
DIY 3-D Scanner