[Insight-users] Problems taking a vtk dataset into itk

[Lorensen, William E (Research)]

Try an Update on the importer:
movingItkImporter->Update();

Remeber, itk (like vtk) is demand driven. You set up the pipeline connections, but the GetOutput does
not cause an update.

Hope this helps,

Bill

-----Original Message-----
From: John David Fleig [mailto:fleig@bmi.osu.edu]
Sent: Tuesday, January 14, 2003 11:09 AM
To: insight-users@public.kitware.com
Subject: [Insight-users] Problems taking a vtk dataset into itk


Problem:
 I don't believe the data is getting over to the itk datatype

Code Snippet:

  //Before this part I have used a vtk TIFF Reader
  typedef itk::Image<unsigned char,3> CharType;
 
  input->Print(cerr);

  //setup Exporter for itk format
  cerr << "About to use vtkImageExport" << endl;
  vtkImageExport *movingVtkExporter = vtkImageExport::New();
  movingVtkExporter->SetInput(input);
 
  //setup itk Importer to read data
  cerr << "About to use VTKImageImport" << endl;
  typedef itk::VTKImageImport<CharType> ImageImportType;
  ImageImportType::Pointer movingItkImporter = ImageImportType::New();
    
  //Connect vtk->itk pipe
  cerr << "About to connect pipelines" << endl;
  ConnectPipelines(movingVtkExporter, movingItkImporter);
  
  cerr << "printing pipe in middle" << endl;
  movingItkImporter->GetOutput()->Print(cerr);

Results of first print (input)
vtkStructuredPoints (0x80f6f00)
  Debug: Off
  Modified Time: 153
  Reference Count: 1
  Registered Events: (none)
  Source: 0x80f6e08
  Release Data: Off
  Data Released: False
  Global Release Data: Off
  MaximumNumberOfPieces: -1
  PipelineMTime: 136
  UpdateTime: 151
  UpdateExtent: Not Initialized
  Update Number Of Pieces: 1
  Update Piece: 0
  Update Ghost Level: 0
  RequestExactExtent: Off
   UpdateExtent: 0, 1023, 0, 767, 0, 0
  WholeExtent: 0, 1023, 0, 767, 0, 0
  Field Data:
    Debug: Off
    Modified Time: 141
    Reference Count: 1
    Registered Events: (none)
    Number Of Arrays: 0
    Number Of Components: 0
    Number Of Tuples: 0
  Locality: 0
  NumberOfConsumers: 0
  ExtentTranslator: (0x80f7080)
  MaximumNumberOfPieces: -1
  Number Of Points: 786432
  Number Of Cells: 784641
  Cell Data:
    Debug: Off
    Modified Time: 143
    Reference Count: 1
    Registered Events: (none)
    Number Of Arrays: 0
    Number Of Components: 0
    Number Of Tuples: 0
    Copy Flags: ( 1 1 1 1 1 )
    Scalars: (none)
    Vectors: (none)
    Normals: (none)
    TCoords: (none)
    Tensors: (none)
  Point Data:
    Debug: Off
    Modified Time: 150
    Reference Count: 1
    Registered Events: (none)
    Number Of Arrays: 1
    Array 0 name = scalars
    Number Of Components: 3
    Number Of Tuples: 786432
    Copy Flags: ( 1 1 1 1 1 )
    Scalars: 
      Debug: Off
      Modified Time: 147
      Reference Count: 1
      Registered Events: (none)
      Name: scalars
      Number Of Components: 3
      Number Of Tuples: 786432
      Size: 2359296
      MaxId: 2359295
      LookupTable: (none)
      Array: 0x42f45008
    Vectors: (none)
    Normals: (none)
    TCoords: (none)
    Tensors: (none)
  Bounds: 
    Xmin,Xmax: (0, 1023)
    Ymin,Ymax: (0, 767)
    Zmin,Zmax: (0, 0)
  Compute Time: 0
  Release Data: Off
  ScalarType: 3
  NumberOfScalarComponents: 3
  Spacing: (1, 1, 1)
  Origin: (0, 0, 0)
  Dimensions: (1024, 768, 1)
  Increments: (3, 3072, 2359296)
  Extent: (0, 1023, 0, 767, 0, 0)
  WholeExtent: (0, 1023, 0, 767, 0, 0)

Results of second print (itk)

Image (0x80a1ac8)
  Reference Count: 1
  Modified Time: 9
  Debug: Off
  Observers: 
    none
  Source: (0x80ae908) 
  Source output index: 0
  Release Data: Off
  Data Released: False
  Global Release Data: Off
  PipelineMTime: 0
  UpdateTime: 0
  LastRequestedRegionWasOutsideOfTheBufferedRegion: 0
  LargestPossibleRegion: 
    Dimension: 3
    Index: [0, 0, 0]
    Size: [0, 0, 0]
  BufferedRegion: 
    Dimension: 3
    Index: [0, 0, 0]
    Size: [0, 0, 0]
  RequestedRegion: 
    Dimension: 3
    Index: [0, 0, 0]
    Size: [0, 0, 0]
  Origin: [0, 0, 0]
  Spacing: [1, 1, 1]
  PixelContainer: ImportImageContainer (0x80f8398)
  Reference Count: 2
  Modified Time: 4
  Debug: Off
  Observers: 
    none
  Pointer: 0x80f83c4
  Container manages memory: true
  Size: 0
  Capacity: 0


  IndexToPhysicalTransform: AffineTransform (0x80f83d8)
  Reference Count: 2
  Modified Time: 5
  Debug: Off
  Observers: 
    none
  Matrix: 
    1 0 0 0
    0 1 0 0
    0 0 1 0


  PhysicalToIndexTransform: AffineTransform (0x80f8698)
  Reference Count: 2
  Modified Time: 6
  Debug: Off
  Observers: 
    none
  Matrix: 
    1 0 0 0
    0 1 0 0
    0 0 1 0



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