void mitk::DiffusionImageCorrectionFilter
::CorrectDirections( const TransformsVectorType& transformations)
{
if( m_SourceImage.IsNull() )
{
mitkThrow() << " No diffusion image given! ";
}
DPH::GradientDirectionsContainerType::Pointer directions = DPH::GetGradientContainer(m_SourceImage);
DPH::GradientDirectionsContainerType::Pointer corrected_directions = DPH::GradientDirectionsContainerType::New();
mitk::BValueMapProperty::BValueMap bval_map = DPH::GetBValueMap(m_SourceImage);
size_t first_unweighted_index = bval_map.begin()->second.front();
unsigned int transformed = 0;
for(size_t i=0; i< directions->Size(); i++ )
{
// skip b-zero images
if(i==first_unweighted_index)
{
corrected_directions->push_back(directions->ElementAt(i));
continue;
}
auto corrected = GetRotationComponent(transformations.at(transformed)) * directions->ElementAt(i);
// store the corrected direction
corrected_directions->push_back(corrected);
transformed++;
}
// replace the old directions with the corrected ones
DPH::SetGradientContainer(m_SourceImage, corrected_directions);
}
void mitk::DiffusionImageCorrectionFilter
::CorrectDirections( const TransformsVectorType& transformations)
{
if( m_SourceImage.IsNull() )
{
mitkThrow() << " No diffusion image given! ";
}
GradientDirectionContainerPointerType directions = static_cast<mitk::GradientDirectionsProperty*>( m_SourceImage->GetProperty(mitk::DiffusionPropertyHelper::GRADIENTCONTAINERPROPERTYNAME.c_str()).GetPointer() )->GetGradientDirectionsContainer();
GradientDirectionContainerPointerType corrected_directions =
GradientDirectionContainerType::New();
unsigned int transformed = 0;
for(size_t i=0; i< directions->Size(); i++ )
{
// skip b-zero images
if( directions->ElementAt(i).one_norm() <= 0.0 )
{
corrected_directions->push_back( directions->ElementAt(i) );
continue;
}
GradientDirectionType corrected = GetRotationComponent(
transformations.at(transformed))
* directions->ElementAt(i);
// store the corrected direction
corrected_directions->push_back( corrected );
transformed++;
}
// replace the old directions with the corrected ones
m_SourceImage->SetProperty( mitk::DiffusionPropertyHelper::GRADIENTCONTAINERPROPERTYNAME.c_str(), mitk::GradientDirectionsProperty::New( corrected_directions ) );
}
void mitk::DiffusionImageCorrectionFilter<TPixelType>
::CorrectDirections( const TransformsVectorType& transformations)
{
if( m_SourceImage.IsNull() )
{
mitkThrow() << " No diffusion image given! ";
}
GradientDirectionContainerPointerType directions = m_SourceImage->GetDirections();
GradientDirectionContainerPointerType corrected_directions =
GradientDirectionContainerType::New();
unsigned int transformed = 0;
for(size_t i=0; i< directions->Size(); i++ )
{
// skip b-zero images
if( directions->ElementAt(i).one_norm() <= 0.0 )
{
corrected_directions->push_back( directions->ElementAt(i) );
continue;
}
GradientDirectionType corrected = GetRotationComponent(
transformations.at(transformed))
* directions->ElementAt(i);
// store the corrected direction
corrected_directions->push_back( corrected );
transformed++;
}
// replace the old directions with the corrected ones
m_SourceImage->SetDirections( corrected_directions );
}