[vtkusers] Problems using vtkConnectivityFilter on Image Data

[David Gobbi]

Hi Darya,

The vtkConnectivityFilter is meant for use on mesh data.  It suspect
that when you used it on image data, it caused your computer to run
out of memory.

I have a connectivity filter that I wrote specifically for images, but it
is on github.  I haven't contributed it to VTK yet.  But you can try it
if you are interested:

https://github.com/dgobbi/AIRS/tree/master/ImageSegmentation

You can also try the vtkImageThresholdConnectivity filter that comes
with VTK:
http://www.vtk.org/doc/nightly/html/classvtkImageThresholdConnectivity.html

 - David



On Fri, Nov 6, 2015 at 10:36 AM, Darya Yelshyna via vtkusers <
vtkusers at vtk.org> wrote:

> Hi everyone!
>
> I was trying to apply vtkConnectivityFilter to vtkImageData, but the
> program crashes at this step.
> "This application has requested the Runtime to terminate it in an unusual
> way." This is this a part of my code:
>
> dilateFilter = vtk.vtkImageContinuousDilate3D()
> dilateFilter.SetKernelSize(5, 5, 5)
> dilateFilter.SetInputConnection(logic2.GetOutputPort())
> dilateFilter.Update()
>
> connectFilter = vtk.vtkConnectivityFilter()
> connectFilter.SetExtractionModeToLargestRegion()
> connectFilter.SetInputConnection(dilateFilter.GetOutputPort())
> connectFilter.Update()
>
> I don't understand what is happening.. Can anybody help me?
>
> Thank you in advance.
>
> Best regards,
> Darya
>
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