[vtkusers] Extracting a Slice from a volume in different orientation

[cspl]

Dear Friends,

How to extract a slice from volume in different orientation like sagital,axial,frontal.I am using vtkimageclip ,but I am not getting exact output.what should I do.If u know please give me suggestion

I have written code as follows.


 vtkImageReader *reader=vtkImageReader::New();
 reader->ReleaseDataFlagOff();
 reader->SetDataByteOrderToLittleEndian();
 reader->SetDataExtent(0,255,0,255,1,93);
 reader->SetFilePrefix("c:\\dicomfiles\\download\\");
 reader->SetFilePattern("%s%d.raw");
 reader->SetDataMask(0x7fff);


 vtkImageClip *clip = vtkImageClip::New();
 clip->SetInput(reader->GetOutput());
 clip->SetOutputWholeExtent(10,10,0,255,0,92);
 clip->ClipDataOn();
 clip->ReleaseDataFlagOff();

 vtkImageViewer *viewer=vtkImageViewer::New();
 viewer->SetInput(clip->GetOutput());
 viewer->SetZSlice(10);
 viewer->SetColorWindow(1000);
 viewer->SetColorLevel(500);
 viewer->Render(); 


Thanking you,
Regards,
Ramakrishna

  ----- Original Message ----- 
  From: Amy Henderson 
  To: cspl ; vtkusers at public.kitware.com 
  Sent: Wednesday, July 17, 2002 6:35 PM
  Subject: Re: [vtkusers] Extracting a Slice from a volume in different orientation


  At 06:21 PM 7/17/2002 +0530, cspl wrote:

    Dear Friends,
     
    How to extract an Image from a volume in orientations sagital(height),coronal(volwidth),transverse(depth). Is there any suitable class or method in VTK.
     
    Thanking you,
     
    Regards,
    Ramakrishna

  Try using vtkImageClip.  Use the SetOutputWholeExtent method that takes 6 parameters (min and max in each of X, Y, and Z directions).  To extract a slice in a particular direction, set the min and max values for that dimension to be the same value (the slice number you want).  For example, if your data has dimensions 128 x 128 x 30, and you want to extract slice 50 in X, call SetOutputWholeExtent(50, 50, 0, 127, 0, 29).

  - Amy

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