itkBSplineExponentialDiffeomorphicTransform.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
 *
 *         http://www.apache.org/licenses/LICENSE-2.0.txt
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 *  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.
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 *=========================================================================*/
#ifndef itkBSplineExponentialDiffeomorphicTransform_h
#define itkBSplineExponentialDiffeomorphicTransform_h
 
#include "itkConstantVelocityFieldTransform.h"
#include "itkDisplacementFieldToBSplineImageFilter.h"
#include "itkPointSet.h"
 
namespace itk
{
 
template <typename TParametersValueType, unsigned int NDimensions>
class ITK_TEMPLATE_EXPORT BSplineExponentialDiffeomorphicTransform
  : public ConstantVelocityFieldTransform<TParametersValueType, NDimensions>
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(BSplineExponentialDiffeomorphicTransform);
 
  using Self = BSplineExponentialDiffeomorphicTransform;
  using Superclass = ConstantVelocityFieldTransform<TParametersValueType, NDimensions>;
  using Pointer = SmartPointer<Self>;
  using ConstPointer = SmartPointer<const Self>;
 
  itkTypeMacro(BSplineExponentialDiffeomorphicTransform, ConstantVelocityFieldTransform);
 
  itkNewMacro(Self);
 
  static constexpr unsigned int ConstantVelocityFieldDimension = NDimensions;
 
  static constexpr unsigned int Dimension = NDimensions;
 
  using ScalarType = typename Superclass::ScalarType;
  using DerivativeType = typename Superclass::DerivativeType;
  using DerivativeValueType = typename DerivativeType::ValueType;
 
  using ParametersType = typename Superclass::ParametersType;
  using ParametersValueType = typename Superclass::ParametersValueType;
  using FixedParametersType = typename Superclass::FixedParametersType;
  using FixedParametersValueType = typename Superclass::FixedParametersValueType;
 
  using DisplacementFieldType = typename Superclass::DisplacementFieldType;
  using DisplacementFieldPointer = typename Superclass::DisplacementFieldPointer;
  using ConstantVelocityFieldType = typename Superclass::ConstantVelocityFieldType;
  using ConstantVelocityFieldPointer = typename Superclass::ConstantVelocityFieldPointer;
 
  using DisplacementVectorType = typename DisplacementFieldType::PixelType;
 
  using PointSetType = PointSet<ConstantVelocityFieldType, Dimension>;
  using SplineOrderType = unsigned int;
  using BSplineFilterType = DisplacementFieldToBSplineImageFilter<ConstantVelocityFieldType>;
  using WeightsContainerType = typename BSplineFilterType::WeightsContainerType;
  using ArrayType = typename BSplineFilterType::ArrayType;
  using ArrayValueType = typename ArrayType::ValueType;
 
  void
  UpdateTransformParameters(const DerivativeType & update, ScalarType factor = 1.0) override;
 
  virtual ConstantVelocityFieldPointer
  BSplineSmoothConstantVelocityField(const ConstantVelocityFieldType *, const ArrayType &);
 
  itkSetMacro(SplineOrder, SplineOrderType);
  itkGetConstMacro(SplineOrder, SplineOrderType);
 
  itkSetMacro(NumberOfControlPointsForTheConstantVelocityField, ArrayType);
  itkGetConstMacro(NumberOfControlPointsForTheConstantVelocityField, ArrayType);
 
  itkSetMacro(NumberOfControlPointsForTheUpdateField, ArrayType);
  itkGetConstMacro(NumberOfControlPointsForTheUpdateField, ArrayType);
 
  void
  SetMeshSizeForTheConstantVelocityField(const ArrayType &);
 
  void
  SetMeshSizeForTheUpdateField(const ArrayType &);
 
protected:
  BSplineExponentialDiffeomorphicTransform();
  ~BSplineExponentialDiffeomorphicTransform() override = default;
 
  void
  PrintSelf(std::ostream &, Indent) const override;
 
private:
  ArrayType m_NumberOfControlPointsForTheConstantVelocityField;
  ArrayType m_NumberOfControlPointsForTheUpdateField;
 
  SplineOrderType m_SplineOrder{ 3 };
};
 
} // end namespace itk
 
#ifndef ITK_MANUAL_INSTANTIATION
#  include "itkBSplineExponentialDiffeomorphicTransform.hxx"
#endif
 
#endif // itkBSplineExponentialDiffeomorphicTransform_h