itkCompareHistogramImageToImageMetric.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 __itkCompareHistogramImageToImageMetric_h
#define __itkCompareHistogramImageToImageMetric_h

#include "itkHistogramImageToImageMetric.h"

namespace itk
{
template< typename TFixedImage, typename TMovingImage >
class CompareHistogramImageToImageMetric:
  public HistogramImageToImageMetric< TFixedImage, TMovingImage >
{
public:
  typedef CompareHistogramImageToImageMetric                       Self;
  typedef HistogramImageToImageMetric< TFixedImage, TMovingImage > Superclass;
  typedef SmartPointer< Self >                                     Pointer;
  typedef SmartPointer< const Self >                               ConstPointer;

  itkTypeMacro(CompareHistogramImageToImageMetric,
               HistogramImageToImageMetric);

  typedef typename Superclass::RealType         RealType;
  typedef typename Superclass::TransformType    TransformType;
  typedef typename Superclass::TransformPointer TransformPointer;
  typedef typename TransformType::ConstPointer  TransformConstPointer;

  typedef typename Superclass::TransformParametersType TransformParametersType;
  typedef typename Superclass::TransformJacobianType   TransformJacobianType;
  typedef typename Superclass::GradientPixelType       GradientPixelType;

  typedef typename Superclass::MeasureType            MeasureType;
  typedef typename Superclass::DerivativeType         DerivativeType;
  typedef typename Superclass::FixedImageType         FixedImageType;
  typedef typename Superclass::MovingImageType        MovingImageType;
  typedef typename Superclass::FixedImageConstPointer FixedImageConstPointer;
  typedef typename Superclass::MovingImageConstPointer
  MovingImageConstPointer;

  typedef typename Superclass::HistogramType            HistogramType;
  typedef typename Superclass::HistogramSizeType        HistogramSizeType;
  typedef typename HistogramType::MeasurementVectorType HistogramMeasurementVectorType;
  typedef typename HistogramType::AbsoluteFrequencyType HistogramAbsoluteFrequencyType;
  typedef HistogramAbsoluteFrequencyType                HistogramFrequencyType;

  typedef typename HistogramType::Iterator HistogramIteratorType;
  typedef typename HistogramType::Pointer  HistogramPointerType;

  typedef typename Superclass::InterpolatorType    InterpolatorType;
  typedef typename Superclass::InterpolatorPointer InterpolatorPointer;

  typedef typename Superclass::FixedImageRegionType
  FixedImageRegionType;

  itkSetMacro(TrainingHistogram, HistogramPointerType);
  itkGetConstReferenceMacro(TrainingHistogram, HistogramPointerType);

  itkSetConstObjectMacro(TrainingFixedImage, FixedImageType);

  itkSetConstObjectMacro(TrainingMovingImage, MovingImageType);
  itkGetConstObjectMacro(TrainingMovingImage, MovingImageType);

  itkSetObjectMacro(TrainingTransform, TransformType);
  itkGetModifiableObjectMacro(TrainingTransform, TransformType);

  itkSetObjectMacro(TrainingInterpolator, InterpolatorType);
  itkGetModifiableObjectMacro(TrainingInterpolator, InterpolatorType);

  itkSetMacro(TrainingFixedImageRegion, FixedImageRegionType);
  itkGetConstReferenceMacro(TrainingFixedImageRegion, FixedImageRegionType);

  unsigned int GetNumberOfParameters(void) const
  { return this->GetTransform()->GetNumberOfParameters(); }

  void Initialize()
  throw ( ExceptionObject );

protected:
  CompareHistogramImageToImageMetric();
  virtual ~CompareHistogramImageToImageMetric(){}
  void PrintSelf(std::ostream & os, Indent indent) const;

  void FormTrainingHistogram()
  throw ( ExceptionObject );

  virtual MeasureType EvaluateMeasure(HistogramType & histogram) const = 0;

private:
  // Purposely not implemented.
  CompareHistogramImageToImageMetric(Self const &);
  void operator=(Self const &); // Purposely not implemented.

  FixedImageConstPointer  m_TrainingFixedImage;
  MovingImageConstPointer m_TrainingMovingImage;
  TransformPointer        m_TrainingTransform;
  InterpolatorPointer     m_TrainingInterpolator;
  FixedImageRegionType    m_TrainingFixedImageRegion;
  HistogramPointerType    m_TrainingHistogram;
};
} // End namespace itk.

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

#endif // __itkCompareHistogramImageToImageMetric_h