Hi,
I'm having a similar problem and want to try using vmtkpotentialfit.
I tried using it the following way:
vmtkpotentialfit -imagefile foo.vti -ofile foo_potentialfit.vtk
but it seems that the output is empty (no file is created). If I try to view
the surface, I see nothing, just a black screen.
Does anyone know if there's an example I can follow for this script?
Regards,
Ido
On Fri, Jul 29, 2011 at 11:28 AM, Luca Antiga <luca.ant...@gmail.com> wrote:
> Hi Yap,
> if you are on a 64 bit system, and assuming you compiled vmtk from scratch
> (correct me if I'm wrong)
> make sure that vmtk and its dependencies are compiled for a 64 bit
> architecture (amd64 or x86_64).
> You should find a reference to these two in your CMakeCache.txt in the
> build directories.
> If you are running on a 64 bit system, your build should already be 64 bits
> anyway...
>
> In any case, there is a possibility that memory is not sufficient if you
> are running, for instance, level
> sets on very large images. Running level sets means that your image has to
> be replicated several
> times in memory (to compute gradients, etc), and converted to "expensive"
> numerical representations,
> so it's totally possible that you run out of memory.
>
> Just so you know, you can for instance segment individual VOIs and merge
> them after segmentation,
> or you can work on a subsampled image and then optimize your segmentation
> on the full image.
> Or you could rely on less expensive deformable models - an explicit
> deformable model such as the
> one provided by vmtkpotentialfit. Or a bit of all the above.
>
> What's the right way to go really depends on the problem at hand and what
> you're trying to achieve.
>
> What is the size of your images and what algorithms are you trying to run
> on them?
>
> Luca
>
>
> On Jul 21, 2011, at 9:05 PM, Yap, Choon Hwai wrote:
>
> > Hi,
> >
> > I would like to segment very high resolution images, and keep
> encountering memory error as such:
> >
> > ERROR: In /build/buildd/vtk-5.4.2/Common/vtkDataArrayTemplate.txx, line
> 141
> > vtkFloatArray (0x1d582b0): Unable to allocate 186212691 elements of size
> 4 bytes.
> >
> > Is there a way to increase the memory allocation for vmtk?
> > I'm using Ubuntu v11.04
> >
> > Any advice will be greatly appreciated..!
> > Thanks!
> >
> > regards,
> > Yap
> >
> >
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