This applet is very simple to use. First, you have to take two photos of an object or of two different objects and then you can start the simulation and look how the algorithm check the photos.
When you have taken the first photo, you can then only do 90o rotation, so that the algorithm will be able to find a reconstruction. You have a choice of 5 objects to enjoy with. It may happen that the toolbar do not appear on some browsers. If so, move the pointer on the blank area on the right of the start button and click when something appears ont the status bar.