[vtkusers] Blurred images using QVtkWidget

[Martin Baumann]

Hi Shakes,

thanks for your quick reply. I am not using vtkImageViewer2 but
 the render window within a scroll view of Qt:

  // ...
  _sv = new Q3ScrollView(this,"scroll view");
  // ...
  _iren = QVTKInteractor::New();
  _qvtk_widget = new QVTKWidget();
  _ren_win = _qvtk_widget->GetRenderWindow();
  _ren_win->SetInteractor(_iren);
  _ren_win->Start();
  _sv->addChild(_qvtk_widget);
  // ...

I added four images to the attachment showing two grids with
two different render windows. The files called qvtkX.png are
created using the render window of QVTKWidget. The files
named image_filterX.png are created with a vtkWindowToImageFilter.

Depending on the data and the view options the "qvtkX style" or
the "image_filterX style" ist better. Here qvtk.png and image_filter2.png
are the two nice images. So the best would be to be able to
switch between these two modes for the rendering view and
vtkWindowToImage. But how?

Best regards,
Martin Baumann



shekharc schrieb:
> Hi Martin,
>
> Do you mean your image display is interpolated? If you're using
> vtkImageViewer2 use the line:
>
> viewer->GetImageActor()->InterpolateOff()
>
> to disable it. If not, a few more details would help. Hope that helps.
>
> Cheers
> Shakes
>
> Martin Baumann wrote:
>> I forgot to name some details about my environment:
>>
>> openSUSE 10.2 (X86-64)
>> Qt-4.3.0
>> Vtk-5.0.2
>>
>> Best regards,
>> Martin Baumann
>>
>>
>>
>> Martin Baumann schrieb:
>>> Hi,
>>>
>>> I am experimenting with QVTKWidget and have the problem that
>>> images that are rendered by the render window of the QVtkWidget
>>> are looking blurred.
>>> Until now I used a plain vtkRenderWindow and the rendered images
>>> had sharp edges when visualizing meshes for instance. I already
>>> changed the Smoothing options of the render window but this
>>> didn't help.
>>>
>>> What could cause this problem?
>>>
>>> Best regards,
>>> Martin Baumann
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