[ITK] [ITK-users] Export specific frame/slice of multiframe dicom file: ExtractSliceImageFilter?

[Timothee Evain]

Hello Marcos,

You can extract one slice from your 3D data with itk::ExtractImageFilter
You have to specify the region you want to get as indicated here http://www.itk.org/Doxygen/html/classitk_1_1ExtractImageFilter.html
More precisely, you have to indicate the index of the slice you want and set the third dimension size to 0.
For example, saying you have an image 250x250x250 and you want the 89th slice you have to set:
RegionSize = {250,250,0}
RegionIndex = {0,0,89}

The filter return a 2D image when you collapse the third dimension.

I think this can be what you want ?

Tim

----- Mail original -----
De: "Marcos" <fotosentido at gmail.com>
À: insight-users at itk.org
Envoyé: Mardi 1 Septembre 2015 09:45:00
Objet: Re: [ITK] [ITK-users] Export specific frame/slice of multiframe	dicom	file: ExtractSliceImageFilter?

Hi, 

the input of vtkJPEGWriter: 

template < class T > 
void Exporter :: exportImage ( QString fileName , QVTKWidget * widget ) 
{ 
vtkWindowToImageFilter * filter = vtkWindowToImageFilter :: New (); 
filter -> SetInput ( widget -> GetRenderWindow ()); 

vtkSmartPointer < T > writer = vtkSmartPointer < T >:: New (); 
writer -> SetFileName ( fileName . toStdString (). c_str ()); 
writer -> SetInputConnection ( filter -> GetOutputPort ()); 

writer -> Write (); 
} 

T can be an vtkJPEGWriter, vtkPNGWriter, etc. 
I set the slice with vtkImageViewer2::GetSlice() 
But this depends on the vtk renderwindow, and its size,... 

That's why I need to do it with ITK, unless I can export the original frame with VTK. 

Thank you. 

2015-09-01 1:16 GMT+02:00 Siavash Khallaghi < siavashk at ece.ubc.ca > : 


Hi Marcos, 

How do you set the input of your vtkJPEGWriter? 

Siavash 



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