http://www.itp.tsoa.nyu.edu/~danny/Xtras.html
for details (and demo downlaod) of an Xtra called (poetically)
TrackThemColors (ack), which seems to track points on a video input in 2
or 3D space. Like people moving around, apparently. Also tracks facial
expressions (and eye movement?).
Interested to hear if anyone has any sucess with this...
guylet
(still very much recruiting collaborators for Digital Summer '98 -
Manchester UK)