+/*=========================================================================
+ Program: vv http://www.creatis.insa-lyon.fr/rio/vv
+
+ Authors belong to:
+ - University of LYON http://www.universite-lyon.fr/
+ - Léon Bérard cancer center http://www.centreleonberard.fr
+ - CREATIS CNRS laboratory http://www.creatis.insa-lyon.fr
+
+ This software is distributed WITHOUT ANY WARRANTY; without even
+ the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ PURPOSE. See the copyright notices for more information.
+
+ It is distributed under dual licence
+
+ - BSD See included LICENSE.txt file
+ - CeCILL-B http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.html
+===========================================================================*/
#include <itkImageToVTKImageFilter.h>
//--------------------------------------------------------------------
template<class TItkImageType>
void vvImage::AddItkImage(TItkImageType *input)
{
- mImageDimension = TItkImageType::ImageDimension;
+ // Update input before conversion to enable exceptions thrown by the ITK pipeline.
+ // Otherwise, vtkImageImport catches the exception for us.
+ input->Update();
+
+ // Convert from ITK object to VTK object
+ mImageDimension = TItkImageType::ImageDimension;
typedef itk::ImageToVTKImageFilter <TItkImageType> ConverterType;
typename ConverterType::Pointer converter = ConverterType::New();
+ mItkToVtkConverters.push_back(dynamic_cast< itk::ProcessObject *>(converter.GetPointer()));
converter->SetInput(input);
converter->Update();
+ mVtkImages.push_back( converter->GetOutput() );
- mItkToVtkConverters.push_back(dynamic_cast< itk::ProcessObject *>(converter.GetPointer()));
- mVtkImages.push_back(converter->GetOutput());
-
- //mVtkImageReslice.push_back(vtkSmartPointer<vtkImageReslice>::New());
- //mVtkImageReslice.back()->SetInterpolationModeToLinear();
- //mVtkImageReslice.back()->AutoCropOutputOn();
- //mVtkImageReslice.back()->SetBackgroundColor(-1000,-1000,-1000,1);
- //mVtkImageReslice.back()->SetResliceTransform(mTransform);
- //mVtkImageReslice.back()->SetInput(0, image);
- //mVtkImageReslice.back()->Update();
- //mVtkImages.push_back( mVtkImageReslice.back()->GetOutput(0) );
+ // Account for direction in transform. The offset is already accounted for
+ // in the VTK image coordinates, no need to put it in the transform.
+ vtkSmartPointer<vtkMatrix4x4> matrix = vtkSmartPointer<vtkMatrix4x4>::New();
+ matrix->Identity();
+ for(unsigned int i=0; i<input->GetImageDimension(); i++) {
+ for(unsigned int j=0; j<input->GetImageDimension(); j++) {
+ (*matrix)[i][j] = input->GetDirection()[i][j];
+ // Direction is used around the image origin in ITK
+ (*matrix)[i][3] -= (*matrix)[i][j] * input->GetOrigin()[j];
+ }
+ (*matrix)[i][3] += input->GetOrigin()[i];
+ }
+
+ // GetDirection provides the forward transform, vtkImageReslice wants the inverse
+ matrix->Invert();
+
+ mTransform.push_back(vtkSmartPointer<vtkTransform>::New());
+ mTransform.back()->SetMatrix(matrix);
+ //META DATA
+ mDictionary.push_back(&(input->GetMetaDataDictionary()));
}
//--------------------------------------------------------------------