[Dune] Soft Tissue Deformation Models with Dune

[Ofri Sadowsky]

Hi Andreas,

Thanks for the answer.

The type of model I had in mind was an unstructured grid with somewhere
between 10^4 and 10^5 (probably tetrahedral) cells.

The idea is to define it as an elastic model, have an initial shape, and
then during runtime to have a relatively small number (e.g. 100) boundary
constraints that will induce a deformation.

I am glad to hear of the Dune school.  I will consider this idea.

Regards

Ofri Sadowsky
On Tue, Mar 20, 2012 at 12:42 AM, Dedner, Andreas
<A.S.Dedner at warwick.ac.uk>wrote:

>  Hi,
>
> thats really a rather difficult question to answer - even
> if I did know exactly what your model is. But without exactly the model
> and its size...
>
> I think the Galleries on the dune homepage give you a good
> idea of some of the things that have been done with dune -
> or at least of what is directly available.
>
> If dune is efficient enough - depends on the size of your
> problem  and on how complex your model is to be.
> If your problem involves
> some type of computation using unstructured grids then dune should be
> similar in performance to other packages (as far as
> I know). If you can use Cartesian grids and finite-difference methods then
> probably dune is not the efficient choice.
>
> That's the best information I can give. There are some dune school which
> you might want to attend there you can discuss your problem directly with
> people developing dune. There is a scbool in Heidelberg, Germany (quite
> sone), there is one in Warwick, UK in July and in Stuttgart sometime later
> this year.
>
> Best
> Andreas
>  ------------------------------
> *From:* dune-bounces+a.s.dedner=warwick.ac.uk at dune-project.org[dune-bounces+a.s.dedner=
> warwick.ac.uk at dune-project.org] on behalf of Ofri Sadowsky [
> sadowsky.o.phd at gmail.com]
> *Sent:* Monday, March 19, 2012 7:10 PM
> *To:* dune at dune-project.org; dune-fem at dune-project.org
> *Cc:* Moshe Shoham
> *Subject:* [Dune] Soft Tissue Deformation Models with Dune
>
>   To the Dune community,
>
> I am participating in a project involving tracking and estimating the
> motions and deformations of the brain in an open-skull surgery.
> Essentially, we have a stereo video stream, in which we detect and track
> feature points, and estimate their 3D locations.  These locations would be
> used first to define a rigid motion, and their residuals will define
> boundary conditions for the deformation.
>
> I would like to know if Dune contains the functionality needed for such an
> objective, and if there is a performance estimation of the computation on
> reasonable PC workstation (possibly multi-processor).  Of course, there is
> a variety of ways to define the model type and solution method.  The
> simplest one we had in mind was a mesh of springs.  But we can use more
> sophisticated models if they are useful.
>
> I will be happy to add more information on the problem if it is requested.
>
> Sincerely,
>
> --
>  Ofri Sadowsky, PhD
> Computer Science Consulting and Training
> 7 Carmel St., #37
> Rehovot  76305
> Israel
>
> Tel: +972-77-3436003
> Mob: +972-54-3113572
>
>


-- 
Ofri Sadowsky, PhD
Computer Science Consulting and Training
7 Carmel St., #37
Rehovot  76305
Israel

Tel: +972-77-3436003
Mob: +972-54-3113572
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