Subject:
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Re: RoboCup - rtlToronto10?
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Newsgroups:
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lugnet.org.ca.rtltoronto
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Date:
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Tue, 14 Aug 2001 02:41:43 GMT
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Viewed:
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544 times
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In lugnet.org.ca.rtltoronto, Ka-On Lee writes:
> http://www.msnbc.com/news/612350.asp
It's been thought of a lot. :) I've ALWAYS wanted to do a soccer like game
for an rtlToronto Robotics game. The problem is how to find the ball and
the goal. To make it fun and exciting, you have to literally telegraph out
the position of the ball and goal. But the issue is, not everyone has one
of these balls and goals--and they're hard to distribute.
The Sony Aibos in RoboCup 2000 and 1999 were prerelease development models
with modified vision systems, IIRC. They did a realtime YUV processing
feature that I don't believe is in the publically released Aibo toys. The
balls and the nets are painted in these weird colours which are extremely
differentiable to the dog's CCD camera and therefore are really oriented
well to machine vision, so they can see the ball and the net. Check this
video out:
http://www.cs.washington.edu/ai/Mobile_Robotics/Aibo/movies/
(the Dogmatch one. Notice how the goals, the balls, and the sideposts are
these weird colours-they show up well on for machine vision)
For our scale of robotics, Jin Sato demonstrated a game with a custom PIC
based LED transmitter embedded into a plastic puck/ball that transmitted a
coded "Here I am, here I am!" IR message continously. Robot players would
spin around deciding which direction had the most powerful read on the
signal, then turn towards that direction and drive to it. I guess you'd
have to do the same with each goal too. The video is here:
http://peach.mie.utoronto.ca/events/lego/lego-092300-hockey2.mpg
If you watch it, it's really cute and fun to watch. The only problem is the
puck isn't something you can easily buy or make--it's a custom PIC. I'm
pretty confident we can build them, but not in a way everyone would have
one. We'd just have to say how it worked, then have everyone sort of build
to an API-ie, assume the ball always transmits like so...and when you got
there, you'd tweak it.
This would irritate those who build replicas of the rtlToronto playfield in
their basements (Bruce, Dave, Steve--you know who you are... :) but we could
also publish a "reference" design that everyone could build then expand on,
including everyone from your 12 year old newcomer to your hardcore MechEng
types.
Another possibility is to write a "Ball and Goal Emulator" that runs on a PC
and the IR tower, and have people develop robots to try tracking the Ball
and Goal that way, until they got to the event to work with the real thing.
Calum
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Message has 1 Reply:
 | | Re: RoboCup - rtlToronto10?
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| (...) Yes but now not only do I have a playfield (albeit a quarter sized one, being 4x4) made for us techie/robo guys to keep up with the robo competitions... I have 3 completed modules and 3 partially made modules (which were *not* at the show on (...) (23 years ago, 14-Aug-01, to lugnet.org.ca.rtltoronto)
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