[Insight-users] Simplify a set of points in ITK

[Marta Peroni]

Hi!
thanks for the suggestions...
I tried that out, but its main problem are the repetitions, which I am not
allowed to have.
Marta

On 24 November 2010 17:57, Arnaud GELAS <arnaud_gelas at hms.harvard.edu>wrote:

>  Hi Marta,
>
> If the underlying container of your pointset is a vector container (which
> is the default), you only need to generate a random sequence in between 0
> and the number of points in your container.
>
> You may have a look at vnl_random, here:
>
> http://www.lems.brown.edu/vision/vxl_doc/html/core/vnl/html/classvnl__random.html
>
> HTH,
> Arnaud
>
>
> On 11/24/2010 11:17 AM, Marta Peroni wrote:
>
> Hi!
> I have a kind of "dummy" problem. I do need to select a subset of point
> cloud describing the contour of a structure (the points are previously
> derived with the ITK Review implementation of Marching Squares and therefore
> I do have *lots* of points).
> I found a very nice implementation of this in CGAL Random_Simplify_Points,
> but unfortunately I cannot include the whole library in my project.
> So here it comes the question:
> I did store my points (x,y,z) in a PointsContainer (as in PointSet2.cxx).
> Now in order for the algorithm to work, I need to randomly shuffle /
> randomly extract from the container (shuffle would be the best option).
> Is there something similar to itk::ImageRandomNonRepeatingIteratorWithIndex
> but for points containers?and/or a shuffle method?
> thanks a lot
> Marta
> --
> *******************************************************************
> Marta Peroni
> PhD Student - Bioengineering department - Politecnico di Milano (IT)
>
> contacts:
> mail: marta.peroni at mail.polimi.it , m.peroni at gmail.com
> mobile: +393488202136 (IT) +16178186365 (US)
> office: +39 02 2399 9022
>
> ********************************************************************
>
>
>


-- 
*******************************************************************
Marta Peroni
PhD Student - Bioengineering department - Politecnico di Milano (IT)

contacts:
mail: marta.peroni at mail.polimi.it , m.peroni at gmail.com
mobile: +393488202136 (IT) +16178186365 (US)
office: +39 02 2399 9022

********************************************************************
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.itk.org/pipermail/insight-users/attachments/20101126/9495c973/attachment.htm>