[vtkusers] DICOM files volume rendering

[Elvis Stansvik]

I haven't looked at the example since I'm on my phone, but I would assume
that you need a color/opacity transfer function that fits your data.

Elvis
Den 7 maj 2016 2:05 em skrev "Import EV" <info at import-ev.com>:

> I could finally make vtk.framework for iOS.
>
> Now, I would like to implement volume rendering using 300 DICOM files.
> I use the sample Xcode project "VolumeRender" provided here
> (https://github.com/Kitware/VTK/tree/master/Examples/iOS).
>
> In "MyGLKViewController.mm" of this sample project, I changed the codes
> like
> below;
> "->" shows the codes I changed.
>
> ===
> #else
>     NSArray *paths =
> NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask,
> YES);
>     NSString *basePath = paths.firstObject;
>     std::string fname([basePath UTF8String]);
> ->  //fname += "/CT-chest-quantized.nrrd";
> ->  //vtkNew<vtkNrrdReader> mi;
> ->  //mi->SetFileName(fname.c_str());
> ->  vtkNew<vtkDICOMImageReader> mi;
> ->  mi->SetDirectoryName(fname.c_str());
>     mi->Update();
>
>     double range[2];
>     mi->GetOutput()->GetPointData()->GetScalars()->GetRange(range);
>
>     volumeMapper->SetInputConnection(mi->GetOutputPort());
> #endif
> ===
>
> Then I copied 300 DICOM files to "Documents" directory of the app via
> iTunes.
> The app runs without error but only black color cubic shown on the iPhone5S
> display and does not show correct volume rendering image.
>
> Do I need to do something else to show correct volume rendering image?
> Please advise me.
>
> -----
> Import EV Corp.
> -----
>
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