[ITK-users] Geodesic Active Contour Error: Inputs do not occupy the same physical space!

[Dženan Zukić]

Hi Robert,

if you want to modify an intermediate result, you should save it to a
variable, e.g.:
ImageType::Pointer fmOutput=fastMarching->GetOutput();
then call Set* methods on fmOutput. Otherwise the pipeline update
propagation mechanism might interfere with intermediate results and
overwrite your changes.

Regards,
Dženan

On Mon, May 16, 2016 at 1:49 PM, Robert <scorpiuni at gmail.com> wrote:

> Ooops, you're right.
> But I still don't get it.
> Now the last error persisting is this one:
>
> terminate called after throwing an instance of 'itk::ExceptionObject'
>   what():  /usr/local/include/ITK-4.9/itkImageToImageFilter.hxx:250:
> itk::ERROR: GeodesicActiveContourLevelSetImageFilter(0x2127d40): Inputs do
> not occupy the same physical space!
> InputImage Origin: [0.0000000e+00, 0.0000000e+00, 0.0000000e+00],
> InputImage_1 Origin: [7.2991424e+00, 1.0553263e+01, -7.8717673e+00]
>         Tolerance: 1.6000000e-07
>
> Why doesn't the Origin change?! I tried GetOrigin etc as well, nothing
> worked. It always sets the Origin as 0 0 0. Spacing and Direction now seem
> to work. Is there some order that needs to be respected? If I change the
> order of the commands, it seems like the first ont called always fails...
> Or
> is it simply impossible to get all 3 arguments correct without modifying
> the
> Tolerance somewhere? When 2 Args seem to be right, the 3rd one always
> fails....
>
> InternalImageType::PointType newOrigin;
>   //newOrigin.Fill(0.0);
>   newOrigin[0] = 7.2991424;
>   newOrigin[1] = 10.553263;
>   newOrigin[2] = -7.8717673;
>
>   fastMarching->GetOutput()->SetOrigin(newOrigin);
>   fastMarching->Update();
>
> fastMarching->GetOutput()->SetSpacing(sigmoid->GetOutput()->GetSpacing());
>   fastMarching->Update();
>
>
> fastMarching->GetOutput()->SetDirection(sigmoid->GetOutput()->GetDirection());
>   //fastMarching->GetOutput()->Update();
>   fastMarching->Update();
>
>
>
> --
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