mmachlis@athena.mit.edu (Matthew A Machlis) (05/20/91)
I just thought I would relate my experience with head tracking: I was using a Polhemus system with VPL Eyephones helmet mounted display, but decided that the delay with the Polhemus was unacceptable. So I spent about a month and a half designing and building a mechanical arm which is fixed to a base at one end, with the other end attached to the person's head. It has six joints, the angles of which are measured by potentiometers fed into an a-d board in a PC-clone. This gives 6-DOF head state, with virtually no delay. If the arm is well-designed, it is almost unnoticable to a person wearing the Eyephones. One problem is calibrating it if you need very high accuracy, but if not it seems to be a good solution. -- ---------------------------------------------------------------------------- Matt Machlis MIT Space Systems Laboratory (617)253-2272