[vtkusers] Dental Panoramic View

[Karthik Krishnan]

Not that straightforward. For the PanX, you'll have to reformat the
image data along a curved reconstruction line that runs on the
mandibular canal. I guess you'll have to estimate that curved path
from your marching cubes result. You'll also have to estimate the
thickness of the pan from it.. Or you could use a widget such as the
contour widget to specify  the reformat line.

We do have thick planar reformat, but don't have thick curved reformat
capabilities in VTK, although it should be possible to add it with
some effort.

--
karthik


On Wed, Jan 20, 2010 at 10:27 AM, l.a.pereira <l.a.pereira at uol.com.br> wrote:
> Hi all,
>
> I hava a 3D ray-cast VtkImageData and I need select a cubic area of that to
> generate a panoramic view of this volume of Interest (VOI)
>
> I´m using a vtkBoxRepresentatior  in VTKExtractVOI and then a VTKExtractVOI
> outpot in input of vtkMarchingCubes.
>
> What more I need to create a vtkImageActor with a panoramic view of result a
> vtkMarchingCubes ?
>
> Thanks,
>
>
>
> Followis my code (did not work):
>
> vtkExtractVOI* clipDataSet = vtkExtractVOI::New();
> clipDataSet->SetInput(pFrame->m_wndView.m_pImageData);
> clipDataSet->SetVOI((int)pFrame->m_wndView.m_boxRep->GetBounds()[0],
> (int)pFrame->m_wndView.m_boxRep->GetBounds()[1],
> (int)pFrame->m_wndView.m_boxRep->GetBounds()[2],
> (int)pFrame->m_wndView.m_boxRep->GetBounds()[3],
> (int)pFrame->m_wndView.m_boxRep->GetBounds()[4],
> (int)pFrame->m_wndView.m_boxRep->GetBounds()[5]);
> clipDataSet->Update();
>
> vtkMarchingCubes* iso = vtkMarchingCubes::New();
> iso->SetInput(clipDataSet->GetOutput());
> iso->SetValue(0, 1150);
> iso->ComputeGradientsOn();
> iso->ComputeScalarsOff();
>
> vtkDataSetMapper* isoMapper = vtkDataSetMapper::New();
> isoMapper->SetInputConnection(iso->GetOutputPort());
> isoMapper->ScalarVisibilityOn();
> isoMapper->SetScalarRange(0, 1200);
> isoMapper->ImmediateModeRenderingOn();
>
> vtkImageMapToColors* colorMap = vtkImageMapToColors::New();
> colorMap->PassAlphaToOutputOff();
> colorMap->SetActiveComponent(0);
> colorMap->SetOutputFormatToLuminance();
> colorMap->SetInputConnection(isoMapper->GetOutputPort());
> colorMap->SetLookupTable(pFrame->m_wndView.m_planeWidgetX->GetLookupTable());
>
> vtkImageActor* imageActor = vtkImageActor::New();
> imageActor->PickableOff();
> imageActor->SetInput(colorMap->GetOutput());
>
>
>
>
>
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