[Insight-users] Searching for Optimal Path in 3D vector fieldImage?

[Toon Huysmans]

You could follow the principal direction of the tensor with the largest
corresponding eigenvalue.  In areas with very low anisotropy this would not
make sense so, in those areas the fiber should stop!

It can still be done using streamlines...

Greetz,


Toon.

----- Original Message ----- 
From: "Patrick (Peng) Cheng" <peng-cheng at uiowa.edu>
To: "Toon Huysmans" <denhuys at hotmail.com>; "insight-users"
<insight-users at itk.org>
Sent: Thursday, July 01, 2004 6:41 PM
Subject: Re: Re: [Insight-users] Searching for Optimal Path in 3D vector
fieldImage?


> Thanks Toon,
> Yeah, the thing is there are three direction to follow at each voxel with
different weight not only one.
> I want to find the optimal path between two points. It's kinda like
dynamic programming
> But I don't know how to do it in 3D
> ---------------------------
> Peng (Patrick) Cheng
> Biomedical Engineering
> University of Iowa
> Tel:(319) 400-7442
> Email: peng-cheng at uiowa.edu
>
> ===========2004-07-01 08:52:46 You wrote in your letter:==============
>
> >   Use the vector as a velocity and direction of movement, then integrate
> >the a position over time, this should run trough the corresponding fiber
i
> >think.  Maybe you can use streamlines:
> >
> >    vtkStreamer
> >
> >Greetings,
> >
> >Toon.
> >
> >----- Original Message ----- 
> >From: "Patrick (Peng) Cheng" <peng-cheng at uiowa.edu>
> >To: "insight-users" <insight-users at itk.org>
> >Sent: Thursday, July 01, 2004 4:45 PM
> >Subject: [Insight-users] Searching for Optimal Path in 3D vector field
> >Image?
> >
> >
> >> Hi everybody,
> >> I am doing a fiber tracking on a 3D vector image. I want to find out
the
> >connectivity between two regions.
> >> So I am trying to find the optimal path which follows the vector field.
> >> Can anybody give some hint or clue to do this?
> >> ---------------------------
> >> Peng (Patrick) Cheng
> >> Biomedical Engineering
> >> University of Iowa
> >> Tel:(319) 400-7442
> >> Email: peng-cheng at uiowa.edu
> >>
> >>
> >>
> >>
> >> _______________________________________________
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> >> http://www.itk.org/mailman/listinfo/insight-users
> >>
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>
>
>