itkMultiResolutionImageRegistrationMethod.h

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/*=========================================================================
 *
 *  Copyright Insight Software Consortium
 *
 *  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
 *
 *  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 itkMultiResolutionImageRegistrationMethod_h
#define itkMultiResolutionImageRegistrationMethod_h

#include "itkProcessObject.h"
#include "itkImageToImageMetric.h"
#include "itkSingleValuedNonLinearOptimizer.h"
#include "itkMultiResolutionPyramidImageFilter.h"
#include "itkNumericTraits.h"
#include "itkDataObjectDecorator.h"

namespace itk
{
template< typename TFixedImage, typename TMovingImage >
class ITK_TEMPLATE_EXPORT MultiResolutionImageRegistrationMethod:public ProcessObject
{
public:
  ITK_DISALLOW_COPY_AND_ASSIGN(MultiResolutionImageRegistrationMethod);

  using Self = MultiResolutionImageRegistrationMethod;
  using Superclass = ProcessObject;
  using Pointer = SmartPointer< Self >;
  using ConstPointer = SmartPointer< const Self >;

  itkNewMacro(Self);

  itkTypeMacro(MultiResolutionImageRegistrationMethod, ProcessObject);

  using FixedImageType = TFixedImage;
  using FixedImageConstPointer = typename FixedImageType::ConstPointer;
  using FixedImageRegionType = typename FixedImageType::RegionType;

  using MovingImageType = TMovingImage;
  using MovingImageConstPointer = typename MovingImageType::ConstPointer;

  using MetricType = ImageToImageMetric< FixedImageType, MovingImageType >;
  using MetricPointer = typename MetricType::Pointer;

  using TransformType = typename MetricType::TransformType;
  using TransformPointer = typename TransformType::Pointer;

  using TransformOutputType = DataObjectDecorator< TransformType >;
  using TransformOutputPointer = typename TransformOutputType::Pointer;
  using TransformOutputConstPointer = typename TransformOutputType::ConstPointer;

  using InterpolatorType = typename MetricType::InterpolatorType;
  using InterpolatorPointer = typename InterpolatorType::Pointer;

  using OptimizerType = SingleValuedNonLinearOptimizer;

  using FixedImagePyramidType = MultiResolutionPyramidImageFilter< FixedImageType, FixedImageType >;
  using FixedImagePyramidPointer = typename FixedImagePyramidType::Pointer;

  using ScheduleType = typename FixedImagePyramidType::ScheduleType;

  using MovingImagePyramidType = MultiResolutionPyramidImageFilter< MovingImageType, MovingImageType >;
  using MovingImagePyramidPointer = typename MovingImagePyramidType::Pointer;

  using ParametersType = typename MetricType::TransformParametersType;

  using DataObjectPointer = typename DataObject::Pointer;

  void StopRegistration();

  itkSetConstObjectMacro(FixedImage, FixedImageType);
  itkGetConstObjectMacro(FixedImage, FixedImageType);

  itkSetConstObjectMacro(MovingImage, MovingImageType);
  itkGetConstObjectMacro(MovingImage, MovingImageType);

  itkSetObjectMacro(Optimizer,  OptimizerType);
  itkGetModifiableObjectMacro(Optimizer, OptimizerType);

  itkSetObjectMacro(Metric, MetricType);
  itkGetModifiableObjectMacro(Metric, MetricType);

  itkSetMacro(FixedImageRegion, FixedImageRegionType);
  itkGetConstReferenceMacro(FixedImageRegion, FixedImageRegionType);

  itkSetObjectMacro(Transform, TransformType);
  itkGetModifiableObjectMacro(Transform, TransformType);

  itkSetObjectMacro(Interpolator, InterpolatorType);
  itkGetModifiableObjectMacro(Interpolator, InterpolatorType);

  itkSetObjectMacro(FixedImagePyramid, FixedImagePyramidType);
  itkGetModifiableObjectMacro(FixedImagePyramid, FixedImagePyramidType);

  itkSetObjectMacro(MovingImagePyramid, MovingImagePyramidType);
  itkGetModifiableObjectMacro(MovingImagePyramid, MovingImagePyramidType);

  void SetSchedules(const ScheduleType & fixedSchedule,
                    const ScheduleType & movingSchedule);

  itkGetConstMacro(FixedImagePyramidSchedule, ScheduleType);
  itkGetConstMacro(MovingImagePyramidSchedule, ScheduleType);

  void SetNumberOfLevels(SizeValueType numberOfLevels);

  itkGetConstMacro(NumberOfLevels, SizeValueType);

  itkGetConstMacro(CurrentLevel, SizeValueType);

  itkSetMacro(InitialTransformParameters, ParametersType);
  itkGetConstReferenceMacro(InitialTransformParameters, ParametersType);

  itkSetMacro(InitialTransformParametersOfNextLevel, ParametersType);
  itkGetConstReferenceMacro(InitialTransformParametersOfNextLevel, ParametersType);

  itkGetConstReferenceMacro(LastTransformParameters, ParametersType);

  const TransformOutputType * GetOutput() const;

  using DataObjectPointerArraySizeType = ProcessObject::DataObjectPointerArraySizeType;
  using Superclass::MakeOutput;
  DataObjectPointer MakeOutput(DataObjectPointerArraySizeType idx) override;

  ModifiedTimeType GetMTime() const override;

protected:
  MultiResolutionImageRegistrationMethod();
  ~MultiResolutionImageRegistrationMethod() override = default;
  void PrintSelf(std::ostream & os, Indent indent) const override;

  void  GenerateData() override;

  void Initialize();

  void PreparePyramids();

  itkSetMacro(CurrentLevel, SizeValueType);

private:
  MetricPointer          m_Metric;
  OptimizerType::Pointer m_Optimizer;

  MovingImageConstPointer m_MovingImage;
  FixedImageConstPointer  m_FixedImage;

  TransformPointer    m_Transform;
  InterpolatorPointer m_Interpolator;

  MovingImagePyramidPointer m_MovingImagePyramid;
  FixedImagePyramidPointer  m_FixedImagePyramid;

  ParametersType m_InitialTransformParameters;
  ParametersType m_InitialTransformParametersOfNextLevel;
  ParametersType m_LastTransformParameters;

  FixedImageRegionType                m_FixedImageRegion;
  std::vector< FixedImageRegionType > m_FixedImageRegionPyramid;

  SizeValueType m_NumberOfLevels;
  SizeValueType m_CurrentLevel;

  bool m_Stop;

  ScheduleType m_FixedImagePyramidSchedule;
  ScheduleType m_MovingImagePyramidSchedule;

  bool m_ScheduleSpecified;
  bool m_NumberOfLevelsSpecified;
};
} // end namespace itk

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkMultiResolutionImageRegistrationMethod.hxx"
#endif

#endif