[Insight-users] Choosing points randomly from a mask

[Bill Lorensen]

Check out the itk random iterators:
itkImageRandomNonRepeatingIteratorWithIndex
itkImageRandomIteratorWithIndex

there are some wiki examples here:
http://itk.org/Wiki/ITK/Examples/Iterators/ImageRandomConstIteratorWithIndex
http://itk.org/Wiki/ITK/Examples/Iterators/ImageRandomNonRepeatingConstIteratorWithIndex

You can set the region of the iterator to the bounding box and then check
for inside/outside in the spatial object.



On Mon, May 20, 2013 at 4:19 PM, Luke Bloy <luke.bloy at gmail.com> wrote:

> Hi All,****
>
> ** **
>
> I am interested in randomly choosing locations from within a mask.
> Currently my mask is stored as a SpatialObject but I could change this if
> needed. My current plan is to ****
>
> ** **
>
> **1)      **Get the bounding box of the spatial object.****
>
> **2)      **Call vnl_sample_uniform for x,y and z****
>
> **3)      **Repeat 2 until the point is inside the spatial Object****
>
> ** **
>
> Does anyone have any better ideas on how to go about this. Has this been
> implemented somewhere else within ITK?****
>
> ** **
>
> Thanks,****
>
> Luke****
>
> ** **
>
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