[vtkusers] A wrong visualization result

[C. Hiba]

Good evening. 
I'm trying to visualize the skull volume from a sequence of segmented images. The program runs normally but the result is not right: I don't have a skull volume in my interface but 4!!!
I have attached mt code and i hope that someone tells me where is the error.
Thank you.


vtkVolume16Reader *Reader = vtkVolume16Reader::New();
Reader->SetDataDimensions(128,128);
Reader->SetFilePrefix("C:/Images/bmp/X");
Reader->SetImageRange(1,48);
Reader->SetDataByteOrderToLittleEndian();
Reader->SetDataSpacing(1,1,1);


// An isosurface, or contour value of 500 is known to correspond to the skin of the   // patient. Once generated, a vtkPolyDataNormals filter is used to create normals  // for smooth surface shading during rendering
vtkContourFilter *skinExtractor = vtkContourFilter::New();
skinExtractor->SetInput((vtkDataSet *) Reader->GetOutput());
skinExtractor->SetValue(0,500);
  
vtkPolyDataNormals *skinNormals = vtkPolyDataNormals::New();
skinNormals->SetInput(skinExtractor->GetOutput());
skinNormals->SetFeatureAngle(60.0);
  
vtkPolyDataMapper *skinMapper = vtkPolyDataMapper::New();
skinMapper->SetInput(skinNormals->GetOutput());
skinMapper->ScalarVisibilityOff();
  
vtkActor *skin = vtkActor::New();
skin->SetMapper(skinMapper);


// It is convenient to create an initial view of the data. The FocalPoint and Position   // form a vector direction. Later on (ResetCamera() method) this vector is used to     // position the camera to look at the data in this direction.
vtkCamera *aCamera = vtkCamera::New();
aCamera->SetViewUp (0, 0, 1);
aCamera->SetPosition (0, 1, 0);
aCamera->SetFocalPoint (0, 0, 0);
aCamera->ComputeViewPlaneNormal();


// Actors are added to the renderer. An initial camera view is created.
// The Dolly() method moves the camera towards the FocalPoint,thereby enlarging // the image.
mRender->AddActor(skin);
mRender->SetActiveCamera(aCamera);
mRender->ResetCamera();
aCamera->Dolly(1.5);


       
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