[vtkusers] Displaying Image Data

[Jeff Lee]

How about something like

vtkUnsignedCharArray *arr = vtkUnsignedCharArray:New();
arr->SetVoidArray(myCharData, xdim*ydim*zdim, 1);

vtkImageData *id = vtkImageData::New();
id->SetDimensions(xdim, ydim. zdim);
id->GetPointData()->SetScalars(arr);
id->SetScalarType(VTK_UNSIGNED_CHAR);
id->SetSpacing(1.0, 1.0, 1.0);
id->SetOrigin(0.0, 0.0, 0.0);

once you have a vtkImageData, you can finish the pipeline with a 
vtkImageActor.
-J

Markus wrote:

> Hi there!
>
> I am trying to use VTK to add visualization to a Computer Vision 
> application. Images are thereby represented as unsigned char arrays 
> containing the pixel values (e.g. manipulated pgm files). How can I 
> display an unsigned char array as an image in a render window in vtk, 
> without reading the file as pgm from the disk ?
>
> Thanks,
>
> Markus
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