void ImageCastToItkAndBack_SamePointer_Success()
{
typedef itk::Image<short, 3> ItkImageType;
ItkImageType::Pointer itkImage = ItkImageType::New();
std::string m_ImagePath = GetTestDataFilePath("Pic3D.nrrd");
mitk::Image::Pointer testDataImage = mitk::IOUtil::LoadImage(m_ImagePath);
// modify ITK image
itk::Matrix<double, 3, 3> dir = itkImage->GetDirection();
dir *= 2;
itkImage->SetDirection(dir);
CPPUNIT_ASSERT_THROW_MESSAGE("No exception thrown for casting back the same memory",
testDataImage = mitk::GrabItkImageMemory(itkImage, testDataImage),
itk::ExceptionObject);
CPPUNIT_ASSERT(testDataImage.IsNotNull());
}
void mitk::RegistrationWrapper::ApplyTransformationToImage(mitk::Image::Pointer img, const mitk::RegistrationWrapper::RidgidTransformType &transformation,double* offset, mitk::Image* resampleReference, bool binary)
{
typedef mitk::DiffusionImage<short> DiffusionImageType;
if (dynamic_cast<DiffusionImageType*> (img.GetPointer()) == NULL)
{
ItkImageType::Pointer itkImage = ItkImageType::New();
MITK_ERROR << "imgCopy 0 " << "/" << img->GetReferenceCount();
MITK_ERROR << "pixel type " << img->GetPixelType().GetComponentTypeAsString();
CastToItkImage(img, itkImage);
typedef itk::Euler3DTransform< double > RigidTransformType;
RigidTransformType::Pointer rtransform = RigidTransformType::New();
RigidTransformType::ParametersType parameters(RigidTransformType::ParametersDimension);
for (int i = 0; i<6;++i)
parameters[i] = transformation[i];
rtransform->SetParameters( parameters );
mitk::Point3D origin = itkImage->GetOrigin();
origin[0]-=offset[0];
origin[1]-=offset[1];
origin[2]-=offset[2];
mitk::Point3D newOrigin = rtransform->GetInverseTransform()->TransformPoint(origin);
itk::Matrix<double,3,3> dir = itkImage->GetDirection();
itk::Matrix<double,3,3> transM ( vnl_inverse(rtransform->GetMatrix().GetVnlMatrix()));
itk::Matrix<double,3,3> newDirection = transM * dir;
itkImage->SetOrigin(newOrigin);
itkImage->SetDirection(newDirection);
// Perform Resampling if reference image is provided
if (resampleReference != NULL)
{
typedef itk::ResampleImageFilter<ItkImageType, ItkImageType> ResampleFilterType;
ItkImageType::Pointer itkReference = ItkImageType::New();
CastToItkImage(resampleReference,itkReference);
typedef itk::WindowedSincInterpolateImageFunction< ItkImageType, 3> WindowedSincInterpolatorType;
WindowedSincInterpolatorType::Pointer sinc_interpolator = WindowedSincInterpolatorType::New();
typedef itk::NearestNeighborInterpolateImageFunction< ItkImageType, double > NearestNeighborInterpolatorType;
NearestNeighborInterpolatorType::Pointer nn_interpolator = NearestNeighborInterpolatorType::New();
ResampleFilterType::Pointer resampler = ResampleFilterType::New();
resampler->SetInput(itkImage);
resampler->SetReferenceImage( itkReference );
resampler->UseReferenceImageOn();
if (binary)
resampler->SetInterpolator(nn_interpolator);
else
resampler->SetInterpolator(sinc_interpolator);
resampler->Update();
GrabItkImageMemory(resampler->GetOutput(), img);
}
else
{
// !! CastToItk behaves very differently depending on the original data type
// if the target type is the same as the original, only a pointer to the data is set
// and an additional GrabItkImageMemory will cause a segfault when the image is destroyed
// GrabItkImageMemory - is not necessary in this case since we worked on the original data
// See Bug 17538.
if (img->GetPixelType().GetComponentTypeAsString() != "double")
img = GrabItkImageMemory(itkImage);
}
}
else
{
DiffusionImageType::Pointer diffImages = dynamic_cast<DiffusionImageType*>(img.GetPointer());
typedef itk::Euler3DTransform< double > RigidTransformType;
RigidTransformType::Pointer rtransform = RigidTransformType::New();
RigidTransformType::ParametersType parameters(RigidTransformType::ParametersDimension);
for (int i = 0; i<6;++i)
{
parameters[i] = transformation[i];
}
rtransform->SetParameters( parameters );
mitk::Point3D b0origin = diffImages->GetVectorImage()->GetOrigin();
b0origin[0]-=offset[0];
b0origin[1]-=offset[1];
b0origin[2]-=offset[2];
mitk::Point3D newOrigin = rtransform->GetInverseTransform()->TransformPoint(b0origin);
itk::Matrix<double,3,3> dir = diffImages->GetVectorImage()->GetDirection();
itk::Matrix<double,3,3> transM ( vnl_inverse(rtransform->GetMatrix().GetVnlMatrix()));
itk::Matrix<double,3,3> newDirection = transM * dir;
diffImages->GetVectorImage()->SetOrigin(newOrigin);
diffImages->GetVectorImage()->SetDirection(newDirection);
diffImages->Modified();
mitk::DiffusionImageCorrectionFilter<short>::Pointer correctionFilter = mitk::DiffusionImageCorrectionFilter<short>::New();
// For Diff. Images: Need to rotate the gradients (works in-place)
correctionFilter->SetImage(diffImages);
correctionFilter->CorrectDirections(transM.GetVnlMatrix());
img = diffImages;
}
}
/*!
* \brief Command line interface to Fiberfox.
* Simulate a diffusion-weighted image from a tractogram using the specified parameter file.
*/
int main(int argc, char* argv[])
{
mitkCommandLineParser parser;
parser.setTitle("Fiberfox");
parser.setCategory("Diffusion Simulation Tools");
parser.setContributor("MIC");
parser.setDescription("Command line interface to Fiberfox." " Simulate a diffusion-weighted image from a tractogram using the specified parameter file.");
parser.setArgumentPrefix("--", "-");
parser.addArgument("", "o", mitkCommandLineParser::String, "Output root:", "output folder and file prefix", us::Any(), false, false, false, mitkCommandLineParser::Output);
parser.addArgument("", "i", mitkCommandLineParser::String, "Input:", "input tractogram or diffusion-weighted image", us::Any(), false, false, false, mitkCommandLineParser::Input);
parser.addArgument("parameters", "p", mitkCommandLineParser::String, "Parameter file:", "fiberfox parameter file (.ffp)", us::Any(), false, false, false, mitkCommandLineParser::Input);
parser.addArgument("template", "t", mitkCommandLineParser::String, "Template image:", "use parameters of the template image", us::Any(), true, false, false, mitkCommandLineParser::Input);
parser.addArgument("verbose", "v", mitkCommandLineParser::Bool, "Output additional images:", "output volume fraction images etc.", us::Any());
parser.addArgument("dont_apply_direction_matrix", "", mitkCommandLineParser::Bool, "Don't apply direction matrix:", "don't rotate gradients by image direction matrix", us::Any());
parser.addArgument("fix_seed", "", mitkCommandLineParser::Bool, "Use fix random seed:", "always use same sequence of random numbers", us::Any());
std::map<std::string, us::Any> parsedArgs = parser.parseArguments(argc, argv);
if (parsedArgs.size()==0)
{
return EXIT_FAILURE;
}
std::string outName = us::any_cast<std::string>(parsedArgs["o"]);
std::string paramName = us::any_cast<std::string>(parsedArgs["parameters"]);
std::string input="";
if (parsedArgs.count("i"))
input = us::any_cast<std::string>(parsedArgs["i"]);
bool fix_seed = false;
if (parsedArgs.count("fix_seed"))
fix_seed = us::any_cast<bool>(parsedArgs["fix_seed"]);
bool verbose = false;
if (parsedArgs.count("verbose"))
verbose = us::any_cast<bool>(parsedArgs["verbose"]);
bool apply_direction_matrix = true;
if (parsedArgs.count("dont_apply_direction_matrix"))
apply_direction_matrix = false;
FiberfoxParameters parameters;
parameters.LoadParameters(paramName, fix_seed);
// Test if /path/dir is an existing directory:
std::string file_extension = "";
if( itksys::SystemTools::FileIsDirectory( outName ) )
{
while( *(--(outName.cend())) == '/')
{
outName.pop_back();
}
outName = outName + '/';
parameters.m_Misc.m_OutputPath = outName;
outName = outName + parameters.m_Misc.m_OutputPrefix; // using default m_OutputPrefix as initialized.
}
else
{
// outName is NOT an existing directory, so we need to remove all trailing slashes:
while( *(--(outName.cend())) == '/')
{
outName.pop_back();
}
// now split up the given outName into directory and (prefix of) filename:
if( ! itksys::SystemTools::GetFilenamePath( outName ).empty()
&& itksys::SystemTools::FileIsDirectory(itksys::SystemTools::GetFilenamePath( outName ) ) )
{
parameters.m_Misc.m_OutputPath = itksys::SystemTools::GetFilenamePath( outName ) + '/';
}
else
{
parameters.m_Misc.m_OutputPath = itksys::SystemTools::GetCurrentWorkingDirectory() + '/';
}
file_extension = itksys::SystemTools::GetFilenameExtension(outName);
if( ! itksys::SystemTools::GetFilenameWithoutExtension( outName ).empty() )
{
parameters.m_Misc.m_OutputPrefix = itksys::SystemTools::GetFilenameWithoutExtension( outName );
}
else
{
parameters.m_Misc.m_OutputPrefix = "fiberfox";
}
outName = parameters.m_Misc.m_OutputPath + parameters.m_Misc.m_OutputPrefix;
}
mitk::PreferenceListReaderOptionsFunctor functor = mitk::PreferenceListReaderOptionsFunctor({"Diffusion Weighted Images", "Fiberbundles"}, {});
mitk::BaseData::Pointer inputData = mitk::IOUtil::Load(input, &functor)[0];
itk::TractsToDWIImageFilter< short >::Pointer tractsToDwiFilter = itk::TractsToDWIImageFilter< short >::New();
if ( dynamic_cast<mitk::FiberBundle*>(inputData.GetPointer()) ) // simulate dataset from fibers
{
tractsToDwiFilter->SetFiberBundle(dynamic_cast<mitk::FiberBundle*>(inputData.GetPointer()));
if (parsedArgs.count("template"))
{
MITK_INFO << "Loading template image";
typedef itk::VectorImage< short, 3 > ItkDwiType;
typedef itk::Image< short, 3 > ItkImageType;
mitk::BaseData::Pointer templateData = mitk::IOUtil::Load(us::any_cast<std::string>(parsedArgs["template"]), &functor)[0];
mitk::Image::Pointer template_image = dynamic_cast<mitk::Image*>(templateData.GetPointer());
if (mitk::DiffusionPropertyHelper::IsDiffusionWeightedImage(template_image))
{
ItkDwiType::Pointer itkVectorImagePointer = mitk::DiffusionPropertyHelper::GetItkVectorImage(template_image);
parameters.m_SignalGen.m_ImageRegion = itkVectorImagePointer->GetLargestPossibleRegion();
parameters.m_SignalGen.m_ImageSpacing = itkVectorImagePointer->GetSpacing();
parameters.m_SignalGen.m_ImageOrigin = itkVectorImagePointer->GetOrigin();
parameters.m_SignalGen.m_ImageDirection = itkVectorImagePointer->GetDirection();
parameters.SetBvalue(mitk::DiffusionPropertyHelper::GetReferenceBValue(template_image));
parameters.SetGradienDirections(mitk::DiffusionPropertyHelper::GetOriginalGradientContainer(template_image));
}
else
{
ItkImageType::Pointer itkImagePointer = ItkImageType::New();
mitk::CastToItkImage(template_image, itkImagePointer);
parameters.m_SignalGen.m_ImageRegion = itkImagePointer->GetLargestPossibleRegion();
parameters.m_SignalGen.m_ImageSpacing = itkImagePointer->GetSpacing();
parameters.m_SignalGen.m_ImageOrigin = itkImagePointer->GetOrigin();
parameters.m_SignalGen.m_ImageDirection = itkImagePointer->GetDirection();
}
}
}
else if ( dynamic_cast<mitk::Image*>(inputData.GetPointer()) ) // add artifacts to existing image
{
typedef itk::VectorImage< short, 3 > ItkDwiType;
mitk::Image::Pointer diffImg = dynamic_cast<mitk::Image*>(inputData.GetPointer());
ItkDwiType::Pointer itkVectorImagePointer = ItkDwiType::New();
mitk::CastToItkImage(diffImg, itkVectorImagePointer);
parameters.m_SignalGen.m_SignalScale = 1;
parameters.m_SignalGen.m_ImageRegion = itkVectorImagePointer->GetLargestPossibleRegion();
parameters.m_SignalGen.m_ImageSpacing = itkVectorImagePointer->GetSpacing();
parameters.m_SignalGen.m_ImageOrigin = itkVectorImagePointer->GetOrigin();
parameters.m_SignalGen.m_ImageDirection = itkVectorImagePointer->GetDirection();
parameters.SetBvalue(mitk::DiffusionPropertyHelper::GetReferenceBValue(diffImg));
parameters.SetGradienDirections(mitk::DiffusionPropertyHelper::GetOriginalGradientContainer(diffImg));
tractsToDwiFilter->SetInputImage(itkVectorImagePointer);
}
if (verbose)
{
MITK_DEBUG << outName << ".ffp";
parameters.m_Misc.m_OutputAdditionalImages = true;
parameters.SaveParameters(outName+".ffp");
}
else
parameters.m_Misc.m_OutputAdditionalImages = false;
if (apply_direction_matrix)
{
MITK_INFO << "Applying direction matrix to gradient directions.";
parameters.ApplyDirectionMatrix();
}
tractsToDwiFilter->SetParameters(parameters);
tractsToDwiFilter->SetUseConstantRandSeed(fix_seed);
tractsToDwiFilter->Update();
mitk::Image::Pointer image = mitk::GrabItkImageMemory(tractsToDwiFilter->GetOutput());
if (parameters.m_SignalGen.GetNumWeightedVolumes()>0)
{
if (apply_direction_matrix)
mitk::DiffusionPropertyHelper::SetGradientContainer(image, parameters.m_SignalGen.GetItkGradientContainer());
else
mitk::DiffusionPropertyHelper::SetOriginalGradientContainer(image, parameters.m_SignalGen.GetItkGradientContainer());
mitk::DiffusionPropertyHelper::SetReferenceBValue(image, parameters.m_SignalGen.GetBvalue());
mitk::DiffusionPropertyHelper::InitializeImage(image);
if (file_extension=="")
mitk::IOUtil::Save(image, "DWI_NIFTI", outName+".nii.gz");
else if (file_extension==".nii" || file_extension==".nii.gz")
mitk::IOUtil::Save(image, "DWI_NIFTI", outName+file_extension);
else
mitk::IOUtil::Save(image, outName+file_extension);
}
else
mitk::IOUtil::Save(image, outName+".nii.gz");
if (verbose)
{
if (tractsToDwiFilter->GetTickImage().IsNotNull())
{
mitk::Image::Pointer mitkImage = mitk::Image::New();
itk::TractsToDWIImageFilter< short >::Float2DImageType::Pointer itkImage = tractsToDwiFilter->GetTickImage();
mitkImage = mitk::GrabItkImageMemory( itkImage.GetPointer() );
mitk::IOUtil::Save(mitkImage, outName+"_Ticks.nii.gz");
}
if (tractsToDwiFilter->GetRfImage().IsNotNull())
{
mitk::Image::Pointer mitkImage = mitk::Image::New();
itk::TractsToDWIImageFilter< short >::Float2DImageType::Pointer itkImage = tractsToDwiFilter->GetRfImage();
mitkImage = mitk::GrabItkImageMemory( itkImage.GetPointer() );
mitk::IOUtil::Save(mitkImage, outName+"_TimeFromRf.nii.gz");
}
std::vector< itk::TractsToDWIImageFilter< short >::ItkDoubleImgType::Pointer > volumeFractions = tractsToDwiFilter->GetVolumeFractions();
for (unsigned int k=0; k<volumeFractions.size(); k++)
{
mitk::Image::Pointer image = mitk::Image::New();
image->InitializeByItk(volumeFractions.at(k).GetPointer());
image->SetVolume(volumeFractions.at(k)->GetBufferPointer());
mitk::IOUtil::Save(image, outName+"_Compartment"+boost::lexical_cast<std::string>(k+1)+".nii.gz");
}
if (tractsToDwiFilter->GetPhaseImage().IsNotNull())
{
mitk::Image::Pointer image = mitk::Image::New();
itk::TractsToDWIImageFilter< short >::DoubleDwiType::Pointer itkPhase = tractsToDwiFilter->GetPhaseImage();
image = mitk::GrabItkImageMemory( itkPhase.GetPointer() );
mitk::IOUtil::Save(image, outName+"_Phase.nii.gz");
}
if (tractsToDwiFilter->GetKspaceImage().IsNotNull())
{
mitk::Image::Pointer image = mitk::Image::New();
itk::TractsToDWIImageFilter< short >::DoubleDwiType::Pointer itkImage = tractsToDwiFilter->GetKspaceImage();
image = mitk::GrabItkImageMemory( itkImage.GetPointer() );
mitk::IOUtil::Save(image, outName+"_kSpace.nii.gz");
}
int c = 1;
std::vector< itk::TractsToDWIImageFilter< short >::DoubleDwiType::Pointer > output_real = tractsToDwiFilter->GetOutputImagesReal();
for (auto real : output_real)
{
mitk::Image::Pointer image = mitk::Image::New();
image->InitializeByItk(real.GetPointer());
image->SetVolume(real->GetBufferPointer());
mitk::IOUtil::Save(image, outName+"_Coil-"+boost::lexical_cast<std::string>(c)+"-real.nii.gz");
++c;
}
c = 1;
std::vector< itk::TractsToDWIImageFilter< short >::DoubleDwiType::Pointer > output_imag = tractsToDwiFilter->GetOutputImagesImag();
for (auto imag : output_imag)
{
mitk::Image::Pointer image = mitk::Image::New();
image->InitializeByItk(imag.GetPointer());
image->SetVolume(imag->GetBufferPointer());
mitk::IOUtil::Save(image, outName+"_Coil-"+boost::lexical_cast<std::string>(c)+"-imag.nii.gz");
++c;
}
}
return EXIT_SUCCESS;
}