itkBSplineSyNImageRegistrationMethod.h

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/*=========================================================================
 *
 *  Copyright NumFOCUS
 *
 *  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
 *
 *         https://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  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
 *  limitations under the License.
 *
 *=========================================================================*/
#ifndef itkBSplineSyNImageRegistrationMethod_h
#define itkBSplineSyNImageRegistrationMethod_h
 
#include "itkSyNImageRegistrationMethod.h"
 
#include "itkBSplineSmoothingOnUpdateDisplacementFieldTransform.h"
 
namespace itk
{

template <typename TFixedImage,
          typename TMovingImage,
          typename TOutputTransform =
            BSplineSmoothingOnUpdateDisplacementFieldTransform<double, TFixedImage::ImageDimension>,
          typename TVirtualImage = TFixedImage,
          typename TPointSet = PointSet<unsigned int, TFixedImage::ImageDimension>>
class ITK_TEMPLATE_EXPORT BSplineSyNImageRegistrationMethod
  : public SyNImageRegistrationMethod<TFixedImage, TMovingImage, TOutputTransform, TVirtualImage, TPointSet>
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(BSplineSyNImageRegistrationMethod);

  using Self = BSplineSyNImageRegistrationMethod;
  using Superclass = SyNImageRegistrationMethod<TFixedImage, TMovingImage, TOutputTransform, TVirtualImage, TPointSet>;
  using Pointer = SmartPointer<Self>;
  using ConstPointer = SmartPointer<const Self>;

  itkNewMacro(Self);

  static constexpr unsigned int ImageDimension = TFixedImage::ImageDimension;

  itkOverrideGetNameOfClassMacro(BSplineSyNImageRegistrationMethod);

  using FixedImageType = TFixedImage;
  using FixedImagePointer = typename FixedImageType::Pointer;
  using typename Superclass::FixedImagesContainerType;
  using MovingImageType = TMovingImage;
  using MovingImagePointer = typename MovingImageType::Pointer;
  using typename Superclass::MovingImagesContainerType;
 
  using typename Superclass::PointSetType;
  using typename Superclass::PointSetsContainerType;

  using typename Superclass::ImageMetricType;
  using ImageMetricPointer = typename ImageMetricType::Pointer;
  using MeasureType = typename ImageMetricType::MeasureType;
 
  using typename Superclass::ImageMaskSpatialObjectType;
  using MaskImageType = typename ImageMaskSpatialObjectType::ImageType;
  using typename Superclass::FixedImageMaskType;
  using FixedMaskImageType = typename ImageMaskSpatialObjectType::ImageType;
  using typename Superclass::FixedImageMasksContainerType;
  using typename Superclass::MovingImageMaskType;
  using MovingMaskImageType = typename ImageMaskSpatialObjectType::ImageType;
  using typename Superclass::MovingImageMasksContainerType;
 
  using VirtualImageType = typename Superclass::VirtualImageType;
  using typename Superclass::VirtualImageBaseType;
  using typename Superclass::VirtualImageBaseConstPointer;
 
  using typename Superclass::MultiMetricType;
  using typename Superclass::MetricType;
  using MetricPointer = typename MetricType::Pointer;
  using typename Superclass::PointSetMetricType;
 
  using typename Superclass::NumberOfIterationsArrayType;
 
  using typename Superclass::InitialTransformType;
  using OutputTransformType = TOutputTransform;
  using OutputTransformPointer = typename OutputTransformType::Pointer;
  using RealType = typename OutputTransformType::ScalarType;
  using DerivativeType = typename OutputTransformType::DerivativeType;
  using DerivativeValueType = typename DerivativeType::ValueType;
  using DisplacementFieldType = typename OutputTransformType::DisplacementFieldType;
  using DisplacementFieldPointer = typename DisplacementFieldType::Pointer;
  using DisplacementVectorType = typename DisplacementFieldType::PixelType;
 
  using BSplineFilterType = DisplacementFieldToBSplineImageFilter<DisplacementFieldType>;
  using ArrayType = typename BSplineFilterType::ArrayType;
  using WeightedMaskImageType = typename BSplineFilterType::RealImageType;
  using BSplinePointSetType = typename BSplineFilterType::InputPointSetType;
 
  using typename Superclass::CompositeTransformType;
  using typename Superclass::DisplacementFieldTransformType;
  using typename Superclass::DisplacementFieldTransformPointer;
  using TransformBaseType = typename CompositeTransformType::TransformType;
 
  using typename Superclass::DecoratedOutputTransformType;
  using DecoratedOutputTransformPointer = typename DecoratedOutputTransformType::Pointer;
 
protected:
  BSplineSyNImageRegistrationMethod() = default;
  ~BSplineSyNImageRegistrationMethod() override = default;

  void
  StartOptimization() override;
 
  void
  InitializeRegistrationAtEachLevel(const SizeValueType) override;
 
  DisplacementFieldPointer
  ComputeUpdateField(const FixedImagesContainerType,
                     const PointSetsContainerType,
                     const TransformBaseType *,
                     const MovingImagesContainerType,
                     const PointSetsContainerType,
                     const TransformBaseType *,
                     const FixedImageMasksContainerType,
                     const MovingImageMasksContainerType,
                     MeasureType &) override;
  virtual DisplacementFieldPointer
  BSplineSmoothDisplacementField(const DisplacementFieldType *,
                                 const ArrayType &,
                                 const WeightedMaskImageType *,
                                 const BSplinePointSetType *);
};
} // end namespace itk
 
#ifndef ITK_MANUAL_INSTANTIATION
#  include "itkBSplineSyNImageRegistrationMethod.hxx"
#endif
 
#endif