[sci.virtual-worlds] eye movement detection

ruderman@sbcs.sunysb.edu (David Ruderman) (10/23/90)

I am interested in doing the following:

a) detecting eye movements (cheaply)
b) interpreting them (up,down,left,right,ect..)
c) driving a user interface with this information (for example: X)

The applications to a VR system should be obvious, because it would
be just wonderful for the computer to know where the user's eyes
are pointed at any given moment.

My plan was to use Electro-Oculographic (EOG) methods to measure
eye displacement.  The hardware for this should be simple enough:
pick up skin voltages around the eyes pass this through an amplifier
and then an A-D converter.  

I was wondering if this method (EOG) is done elsewhere, and if so what
algorithms are used to interpret these signals?  I know that there
have been people using more complicated hardware, which was at one
time cost prohibitive.  Is this still true?

--
David Ruderman                            ruderman@sbcs.sunysb.edu
Department of Computer Science                      (516) 632-7675
SUNY at Stony Brook                "The price of freedom is
Stony Brook, NY  11794-4400                    eternal vigilance."