Hello + some questions

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1 total messages Started by Darren Cruse Wed, 28 Apr 1999 00:00

Author: Darren Cruse
Date: Wed, 28 Apr 1999 00:00

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Hello all -

I'm brand new to the list but hope I can learn a thing or two from y'all. :)

I don't know if I'm unusual on this list - but my main interest is in using
motion capture for computer animation.  I had been learning about the
various motion capture systems from Polhemus, Motion Analysis, Ascension,
Vicon, etc.  for a couple years in the hopes of buying a system - but could
never afford one - but recently I've had the good fortune of working with a
new Vicon installation at BioVision in St. Louis.

I know very little about Biomechanics or gait analysis, etc. but esp. with
my recent experience with the Vicon system I'm now relating to issues like
the determination of joint centers, etc. so I hope to learn more from the
list.

Some of my initial basic questions are:

a.  Any Vicon "BodyLanguage" users out there?  I recently captured a dog but
haven't quite figured out how to figure the joint centers as needed to build
the skeleton for animation (hope this question doesn't seem off base for
this mailing list but I presume many of the issues for a dog versus a person
would be the same).

b.  I have an engineering background and am quite interested in how these
systems work (esp. the optical systems), and I noticed the ISB software page
regarding the camera calibration algorithms and 3d coordinate determination
algorithms.  I didn't know this kind of information was well known, and I'm
now wondering if anybody out there can refer me to a good book or journal
articles that would discuss these issues in more depth.

c.  Part of my interest in a. is the dream of building such a system (since
I can't afford one :), and so another question is if there are newsgroups or
web sites (like the "Biomechanics Bargain Barn") where I could watch for
used systems?  And - in general - do y'all find there are many used systems
available, or is this such a specialized, new fangled area that it's
uncommon to find used equipment?

Thanks,

Darren Cruse
www.anet-stl.com/~dcruse
Freak Accident Digital Media

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