[Insight-users] [insight-users] Only binary output of itkFastMarchingImageFilter?

[Feng Ding]

Hi Dan,

Thank you for your suggestion. Unfortunately, this didn't help. I got the
same binary output. Do you know any other possible reasons?

On Wed, Apr 22, 2009 at 2:01 AM, Dan Mueller <dan.muel at gmail.com> wrote:

> Hi DING Feng,
>
> Try setting the output spacing and origin *before* updating the filter:
>
> >    marcher->SetTrialPoints( points );
> >    marcher->SetSpeedConstant( 1.0 );
> >    marcher->SetStoppingValue( 100.0 );
> >    marcher->SetOutputSize( size );
>
> marcher->SetOutputSpacing( spacing );
> marcher->SetOutputOrigin( origin );
>
> This may be the source of your problem... FYI I use this filter
> regularly without issue.
>
> Hope this helps.
>
> Regards, Dan
>
> 2009/4/21 Feng Ding <carlding at gmail.com>:
> > Dear list,
> >
> > I'm trying to use itkFastMarchingImageFilter by following the examples in
> > the ITK source tree. Instead of getting a time arrival image which is
> > similar to a distance map in this case, I only got a binary image with 0
> > inside (a sphere) and 1.70141e+38 outside. I have tested my code on both
> > 3.10 and 3.12 releases of ITK, and got the same results. Following is
> part
> > of my code:
> >
> > // >>>>>>>>>> begin >>>>>>>>>>
> >    index[0] = index[1] = index[2] = 100;
> >    node.SetIndex( index );
> >    node.SetValue( 0 );
> >    points->InsertElement( 0, node );
> >
> >    marcher->SetTrialPoints( points );
> >    marcher->SetSpeedConstant( 1.0 );
> >    marcher->SetStoppingValue( 100.0 );
> >    marcher->SetOutputSize( size );
> >    marcher->DebugOn();
> >    marcher->Update();
> >    marcher->GetOutput()->SetOrigin( origin );
> >    marcher->GetOutput()->SetSpacing( spacing );
> >
> >    volumeWriter->SetInput( marcher->GetOutput() );
> >    volumeWriter->SetFileName( "volume.mha" );
> >    volumeWriter->Write();
> > // <<<<<<<<<<<<<<<<<<<<<<<<<
> >
> > Anyone can give me some suggestion on that? Thanks!
> >
> > Best regards,
> > DING Feng
>
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