Re: Motion Analysis

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#1068

From: Mathew Yeates
Date: Tue, 12 Jan 1993 08:04

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ttcain@vangogh.lerc.nasa.gov (Maureen Cain) writes:

>Hello!

>	Are there any Toolboxes out there for doing motion analysis?  What I 
>want to do is calculate velocity of shedding ice particles.  I have a sequence 
>of frames and if I can find the distance, in pixels, from a reference point in 
>the frame to the ice particle I can calculate the velocity.  The problem is that
>from frame to frame the reference point may not have the same x,y coordinate. 
>Selecting the reference point manually may not be quite accurate.  The same 
>problem holds for selecting the point on the ice shape.  

>	Perhaps it is possible to do this with the routines packaged in Khoros?

>Thanks for any light you can shed on this (no pun intended!!)
>Maureen Cain

There are two template matching routines in the toolbox RLAB available in
the Khoros contrib directory. The first assumes only translation of the
reference point. The second does rotationally invariant matching and is
slower than the first.

Mathew

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Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!usc!elroy.jpl.nasa.gov!henry!mathew
From: mathew@elroy.Jpl.Nasa.Gov (Mathew Yeates)
Newsgroups: comp.soft-sys.khoros
Subject: Re: Motion Analysis
Date: 12 Jan 93 08:04:55 GMT
Organization: Image Analysis Systems Group, JPL
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