[vtkusers] world coordinates do not give the correct dicom coordinate

[Cory Quammen]

Hello,

Would you mind posting your question to https://discourse.vtk.org?
Community support for VTK is transitioning to that forum, and you are more
likely to get an answer there.

Thanks,
Cory

On Mon, Mar 11, 2019 at 9:48 AM zandarina <esmeralda.ruiz at alma3d.com> wrote:

> Dear all,
>
> I want to do segmentation with itk and i would like to select a seed using
> vtk with the mouse. I get the coordinates in world coordinates
>
>                         int x = this->Interactor->GetEventPosition()[0];
>                         int y = this->Interactor->GetEventPosition()[1];
>                         std::cout << "(x,y) = (" << x << "," << y << ")"
> << std::endl;
>
>                         seeds[0] = x;
>                         seeds[1] = y;
>
> but when i want to use it as a seed for itk i see it is the wrong place. I
> tried the transformphysicalpointoindex but the result is even worst
>
>                 bool isInside =
>
> extractFilter->GetOutput()->TransformPhysicalPointToIndex(coordinate_vtk,
> coordinate_itk);
>                 if (isInside) {
>
>
>                         ImageType::PixelType pixelValue =
> extractFilter->GetOutput()->GetPixel(coordinate_itk);
>                 }
>
> Any help about the coordinates in vtk?
>
> Thanks
>
>
>
>
>
> --
> Sent from: http://vtk.1045678.n5.nabble.com/VTK-Users-f1224199.html
> _______________________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Please keep messages on-topic and check the VTK FAQ at:
> http://www.vtk.org/Wiki/VTK_FAQ
>
> Search the list archives at: http://markmail.org/search/?q=vtkusers
>
> Follow this link to subscribe/unsubscribe:
> https://vtk.org/mailman/listinfo/vtkusers
>


-- 
Cory Quammen
Staff R&D Engineer
Kitware, Inc.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://vtk.org/pipermail/vtkusers/attachments/20190311/a1cc016b/attachment.html>