elxBSplineStackTransform.h

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 *  Copyright UMC Utrecht and contributors
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0.txt
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 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
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#ifndef elxBSplineStackTransform_h
#define elxBSplineStackTransform_h
 
#include "elxIncludes.h" // include first to avoid MSVS warning
 
#include "itkAdvancedCombinationTransform.h"
#include "itkAdvancedBSplineDeformableTransform.h"
#include "itkBSplineStackTransform.h"
 
#include "itkGridScheduleComputer.h"
#include "itkUpsampleBSplineParametersFilter.h"
 
namespace elastix
{
 
template <class TElastix>
class ITK_TEMPLATE_EXPORT BSplineStackTransform
  : public itk::AdvancedCombinationTransform<typename elx::TransformBase<TElastix>::CoordRepType,
                                             elx::TransformBase<TElastix>::FixedImageDimension>
  , public TransformBase<TElastix>
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(BSplineStackTransform);
 
  using Self = BSplineStackTransform;
  using Superclass1 = itk::AdvancedCombinationTransform<typename elx::TransformBase<TElastix>::CoordRepType,
                                                        elx::TransformBase<TElastix>::FixedImageDimension>;
  using Superclass2 = elx::TransformBase<TElastix>;
  using Pointer = itk::SmartPointer<Self>;
  using ConstPointer = itk::SmartPointer<const Self>;
 
  itkNewMacro(Self);
 
  itkTypeMacro(BSplineStackTransform, itk::AdvancedCombinationTransform);
 
  elxClassNameMacro("BSplineStackTransform");
 
  itkStaticConstMacro(SpaceDimension, unsigned int, Superclass2::FixedImageDimension);
  itkStaticConstMacro(ReducedSpaceDimension, unsigned int, Superclass2::FixedImageDimension - 1);
 
  using BSplineTransformBaseType =
    itk::AdvancedBSplineDeformableTransformBase<typename elx::TransformBase<TElastix>::CoordRepType,
                                                Self::SpaceDimension>;
  using BSplineTransformBasePointer = typename BSplineTransformBaseType::Pointer;
 
  using ReducedDimensionBSplineTransformBaseType =
    itk::AdvancedBSplineDeformableTransformBase<typename elx::TransformBase<TElastix>::CoordRepType,
                                                Self::ReducedSpaceDimension>;
  using ReducedDimensionBSplineTransformBasePointer = typename ReducedDimensionBSplineTransformBaseType::Pointer;
 
  using typename Superclass1::ParametersType;
  using typename Superclass2::ParameterMapType;
  using typename Superclass1::NumberOfParametersType;
 
  using PixelType = typename BSplineTransformBaseType::PixelType;
  using ImageType = typename BSplineTransformBaseType::ImageType;
  using ImagePointer = typename BSplineTransformBaseType::ImagePointer;
  using RegionType = typename BSplineTransformBaseType::RegionType;
  using IndexType = typename BSplineTransformBaseType::IndexType;
  using SizeType = typename BSplineTransformBaseType::SizeType;
  using SpacingType = typename BSplineTransformBaseType::SpacingType;
  using OriginType = typename BSplineTransformBaseType::OriginType;
  using DirectionType = typename BSplineTransformBaseType::DirectionType;
 
  using typename Superclass2::ElastixType;
  using typename Superclass2::RegistrationType;
  using typename Superclass2::CoordRepType;
  using typename Superclass2::FixedImageType;
  using typename Superclass2::MovingImageType;
  using ITKBaseType = typename Superclass2::ITKBaseType;
  using CombinationTransformType = typename Superclass2::CombinationTransformType;
 
  using ReducedDimensionImageType = itk::Image<PixelType, Self::ReducedSpaceDimension>;
  using ReducedDimensionRegionType = itk::ImageRegion<Self::ReducedSpaceDimension>;
  using ReducedDimensionSizeType = typename ReducedDimensionRegionType::SizeType;
  using ReducedDimensionIndexType = typename ReducedDimensionRegionType::IndexType;
  using ReducedDimensionSpacingType = typename ReducedDimensionImageType::SpacingType;
  using ReducedDimensionDirectionType = typename ReducedDimensionImageType::DirectionType;
  using ReducedDimensionOriginType = typename ReducedDimensionImageType::PointType;
 
  using GridScheduleComputerType = itk::GridScheduleComputer<CoordRepType, ReducedSpaceDimension>;
  using GridScheduleComputerPointer = typename GridScheduleComputerType::Pointer;
  using GridScheduleType = typename GridScheduleComputerType ::VectorGridSpacingFactorType;
  using GridUpsamplerType = itk::UpsampleBSplineParametersFilter<ParametersType, ReducedDimensionImageType>;
  using GridUpsamplerPointer = typename GridUpsamplerType::Pointer;
 
  using ParameterValueType = std::vector<std::string>;
 
  int
  BeforeAll() override;
 
  void
  BeforeRegistration() override;
 
  void
  BeforeEachResolution() override;
 
  virtual void
  IncreaseScale();
 
  void
  ReadFromFile() override;
 
  virtual void
  SetOptimizerScales(const unsigned int edgeWidth);
 
protected:
  BSplineStackTransform() { this->Superclass1::SetCurrentTransform(m_StackTransform); }
 
  ~BSplineStackTransform() override = default;
 
  virtual void
  PreComputeGridInformation();
 
private:
  elxOverrideGetSelfMacro;
 
  void
  InitializeTransform();
 
  ParameterMapType
  CreateDerivedTransformParameterMap() const override;
 
  using StackTransformType = itk::BSplineStackTransform<SpaceDimension>;
 
  const typename StackTransformType::Pointer m_StackTransform{ StackTransformType::New() };
 
  ReducedDimensionBSplineTransformBasePointer m_DummySubTransform;
 
  GridScheduleComputerPointer m_GridScheduleComputer;
  GridUpsamplerPointer        m_GridUpsampler;
 
  unsigned int m_SplineOrder;
 
  unsigned int m_NumberOfSubTransforms;
  double       m_StackOrigin, m_StackSpacing;
 
  unsigned int
  InitializeBSplineTransform();
};
 
} // end namespace elastix
 
#ifndef ITK_MANUAL_INSTANTIATION
#  include "elxBSplineStackTransform.hxx"
#endif
 
#endif // end #ifndef elxBSplineStackTransform_h