> Or heck even for that matter, any idea how to make a small
> robot follow/chase a person ?

I'm sure the robotics sites will have some projects along those
lines. I've not looked because I really don't need to be side-
tracked with neat stuff at the moment ;-)

There would be at least two ways to think about this -

1) keep it fairly simple and make it easy for the robot to track
the object by giving it a known something to track, such as an
IR-reflective target (some tripod-mounted cameras do this to
follow subjects for 'real-life' shoots), or an ultrasound transmitter
and location triangulation by two or more receivers on the robot

2) go high-tech ($$$) with a sophisticated object ID system
that has to interpret what it sees with no help from you. Going
to get complicated

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