[Insight-users] Problem in using ResampleImageFilter on vtkImageData.

[abhishek]

Hello Users,I want to fuse RT-Dose and CT-Slice. For this I am trying to
translate RT-Dose's vtkImageData* so that it is placed appropriately on
CT-Slice for blending.******************************************This is what
I am doing in pipeline:**// Step:1 - convert vtkImageData* to
itk::Image.*VTKImageToImageType::Pointer vtkImageToImageFilter =
VTKImageToImageType::New();vtkImageToImageFilter->SetInput(CT_Reslice->GetOutput());vtkImageToImageFilter->Update();vtkImageToImageFilter->GetOutput()->Print(cout);*//
Step:2 - define itk::TranslationTransform*typedef
itk::TranslationTransform<double,2>
TranslationTransformType;TranslationTransformType::Pointer transform =
TranslationTransformType::New();TranslationTransformType::OutputVectorType
translation;translation[0] = 50;translation[1] =
50;transform->Translate(translation);*// Step:3 - define
itk::ResampleImageFilter*typedef itk::ResampleImageFilter<ImageType,
ImageType> ResampleImageFilterType;ResampleImageFilterType::Pointer
resampleFilter =
ResampleImageFilterType::New();resampleFilter->SetTransform(transform.GetPointer());resampleFilter->SetInput(vtkImageToImageFilter->GetOutput());resampleFilter->Update();resampleFilter->GetOutput()->Print(cout);*//
step:4 - use ImageToVTKImageFilter convert ResampleImageFilter output to vtk
image*typedef itk::ImageToVTKImageFilter      
ConnectorType;ConnectorType::Pointer connector =
ConnectorType::New();connector->SetInput(resampleFilter->GetOutput());connector->Update();******************************************I
recorded output's at two points 1. after converting vtkImageData to
itk::Image & 2. after running itk::ResampleImageFilter*output for 1:*Image
(034AF440)  RTTI typeinfo:   class itk::Image<short,3>  Reference Count: 1 
Modified Time: 62  Debug: Off  Observers:     none  Source: (034AF2C8)  
Source output name: Primary  Release Data: Off  Data Released: False  Global
Release Data: Off  PipelineMTime: 54  UpdateMTime: 63  RealTimeStamp: 0
seconds   LargestPossibleRegion:     Dimension: 3    Index: [0, 0, 0]   
Size: [518, 518, 1]  BufferedRegion:     Dimension: 3    Index: [0, 0, 0]   
Size: [518, 518, 1]  RequestedRegion:     Dimension: 3    Index: [0, 0, 0]   
Size: [518, 518, 1]  Spacing: [1.25, 1.25, 2.5]  Origin: [-186.397,
-125.147, 0]  Direction: 1 0 00 1 00 0 1  IndexToPointMatrix: 1.25 0 00 1.25
00 0 2.5  PointToIndexMatrix: 0.8 0 00 0.8 00 0 0.4  Inverse Direction: 1 0
00 1 00 0 1  PixelContainer:     ImportImageContainer (00945610)      RTTI
typeinfo:   class itk::ImportImageContainer      Reference Count: 1     
Modified Time: 61      Debug: Off      Observers:         none      Pointer:
00A40040      Container manages memory: false      Size: 268324     
Capacity: 268324*output for 2:*Image (034AF878)  RTTI typeinfo:   class
itk::Image<short,3>  Reference Count: 1  Modified Time: 92  Debug: Off 
Observers:     none  Source: (034AF6A0)   Source output name: Primary 
Release Data: Off  Data Released: False  Global Release Data: Off 
PipelineMTime: 80  UpdateMTime: 93  RealTimeStamp: 0 seconds  
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] 
Spacing: [1, 1, 1]  Origin: [0, 0, 0]  Direction: 1 0 00 1 00 0 1 
IndexToPointMatrix: 1 0 00 1 00 0 1  PointToIndexMatrix: 1 0 00 1 00 0 1 
Inverse Direction: 1 0 00 1 00 0 1  PixelContainer:     ImportImageContainer
(009453E0)      RTTI typeinfo:   class itk::ImportImageContainer     
Reference Count: 1      Modified Time: 90      Debug: Off      Observers:        
none      Pointer: 034AEFF0      Container manages memory: true      Size: 0     
Capacity: 0What am I doing wrong here?? Can somebody point
out.Regards,Abhishek.



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