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List:       kde-core-devel
Subject:    BodyTalk
From:       Carsten Pfeiffer <carpdjih () cetus ! zrz ! TU-Berlin ! DE>
Date:       2000-01-28 15:52:02
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On Thu, Jan 27, 2000 at 01:04:30AM +0000, Richard Moore wrote:

Hiya,
 
> What's this? Do you have a link?

sadly not, but here's what Dirk Foersterling wrote about it on kde-devel:

What is BodyTalk?
-----------------
BodyTalk is the name of the Project Group #345 at the University of
Dortmund. We designed
and now implement a video based gesture (including movement) recognition
system for
controlling presentation software. BodyTalk is a mixture of C++ (video
manipulation) and
Java (Front-End, GUI). The different components are connected using
CORBA.
BodyTalk will be GPLed, so maybe some of you will be able to check it
out personally someday.

And:
> Is the C++ part a complete rewrite, or is it based on Argus and Zyklop?
 
Now I'll write some more than you wanted to know (And it seems you
already know much of this):
 
Zyklop recognized single or sequences of still hand-gestures and required
the hand to be close to the camera. (You know better how this worked)
 
Argus later refined Zyklop's technique. It allowed the Person to be
'somewhere' in the room and tracked down where the gesture or sequence
of gestures is made.
 
BodyTalk wants to recognize moving body gestures in real time. For
KPresenter, this could mean that waving to the left means 'previous page'
and waving to the right means 'next page'.
 
Because of this new goal, only the very basic ideas and experiences in
gesture recognition from Zyklop and Argus were useful. So we had to
start over and do a rewrite. The only re-used code is the
Hidden-Markov-Model module from Richard Myers and Jim Whitson (with
some modifications to be included as patches).  

Cheers, 
Carsten Pfeiffer
-- 
http://www.geocities.com/SiliconValley/1632/

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