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  • kinematic analysis systems

    Dear participants,

    I am hoping for some help/advice re: kinematic motion analysis systems. As
    a sensory biologist, I am somewhat far away from what many of you do, but
    the folks at Peak performance suggested I send this query. I need to
    purchase a video-motion analysis system for tracking animals during
    orientation/navigation. As such, I am less interested in analysis that may
    supply things like joint angles, as I am in systens that will calculate
    parameters related to the path itself. Appropriate quantities might be
    angular bearings, turn angles, rates of directional change, net-to-gross
    displacement ratios, FFT's etc, as well as standard velocities and
    accelerations. Peak Motus, while excellent in the capture capabilities
    (that is, the raw video is preserved for automatic or manual tracking) does
    not do this, while Motion Analysis Corps Cell Tracking system does. Of
    course, the tradeoff there is that the raw video data is lost when the
    object gets digitized to grey scale tholds. All you get are the outlines of
    the object's centroid. This is a real bear if you have multiple objects or
    poor video; you can't actually see what is being tracked. (Is that noise?
    Dust? My critter?) I am wondering if: 1) there is an alternative system
    that combines the tracking of Peak Motus (specifically preserving the video
    infor. for manual &/or automatic tracking) with the analysis capabilities
    of Cell Track; or 2) Whether there is a free-standing analysis package that
    can EASILY perform these sorts of calculations that can interface with Peak
    Motus? Obviously one can write Xcell macros for some of these things, but
    angular rotations in Xcell are nasty (or perhaps, I am just not an elegant
    programmer). I'd like to go with that system, but if I can't crunch the
    numbers the great image handling is of no utility.

    Any insights/advice gratefully appreciated. If I get enough info-I'll post
    it to the server.

    Thanks in advance
    Marc Weissburg
    School of Biology
    Georgia Institute of Technology
    310 Ferst Ave.
    Atlanta, Ga, 30332-0230
    404-894-8433
    404-894-0519 (fax)
    http://www.gatech.edu/biology/fac/weis.htm
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