itkLeastTrimmedSquaresPointMetric.h

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/*=============================================================================

  NifTK: A software platform for medical image computing.

  Copyright (c) University College London (UCL). All rights reserved.

  This software is distributed WITHOUT ANY WARRANTY; without even
  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  PURPOSE.

  See LICENSE.txt in the top level directory for details.

=============================================================================*/

#ifndef itkLeastTrimmedSquaresPointMetric_h
#define itkLeastTrimmedSquaresPointMetric_h

#include "itkPointSetToPointSetSingleValuedMetric.h"
#include <itkCovariantVector.h>
#include <itkPoint.h>
#include <itkPointSet.h>
#include <itkImage.h>

namespace itk
{
template < class TFixedPointSet, class TMovingPointSet>
class ITK_EXPORT LeastTrimmedSquaresPointMetric : 
    public PointSetToPointSetSingleValuedMetric< TFixedPointSet, TMovingPointSet>
{
public:

  typedef LeastTrimmedSquaresPointMetric                                          Self;
  typedef PointSetToPointSetSingleValuedMetric<TFixedPointSet, TMovingPointSet >  Superclass;
  typedef SmartPointer<Self>                                                      Pointer;
  typedef SmartPointer<const Self>                                                ConstPointer;

  itkNewMacro(Self);
 
  itkTypeMacro(LeastTrimmedSquaresPointMetric, PointSetToPointSetSingleValuedMetric);
 
  typedef typename Superclass::TransformType              TransformType;
  typedef typename Superclass::TransformPointer           TransformPointer;
  typedef typename Superclass::TransformParametersType    TransformParametersType;
  typedef typename Superclass::TransformJacobianType      TransformJacobianType;

  typedef typename Superclass::MeasureType                MeasureType;
  typedef typename Superclass::DerivativeType             DerivativeType;
  typedef typename Superclass::FixedPointSetType          FixedPointSetType;
  typedef typename Superclass::MovingPointSetType         MovingPointSetType;
  typedef typename Superclass::FixedPointSetConstPointer  FixedPointSetConstPointer;
  typedef typename Superclass::MovingPointSetConstPointer MovingPointSetConstPointer;

  typedef typename Superclass::PointIterator              PointIterator;
  typedef typename Superclass::PointDataIterator          PointDataIterator;

  unsigned int GetNumberOfValues() const;

  void GetDerivative( const TransformParametersType & parameters, DerivativeType & Derivative ) const;

  MeasureType GetValue( const TransformParametersType & parameters ) const;

  void GetValueAndDerivative( const TransformParametersType & parameters, MeasureType& Value, DerivativeType& Derivative ) const;

  itkSetMacro(PercentageOfPointsToKeep, int);
  itkGetMacro(PercentageOfPointsToKeep, int);
  
protected:
  LeastTrimmedSquaresPointMetric();
  virtual ~LeastTrimmedSquaresPointMetric() {};

  void PrintSelf(std::ostream& os, Indent indent) const;

private:
  LeastTrimmedSquaresPointMetric(const Self&); //purposely not implemented
  void operator=(const Self&); //purposely not implemented

  int m_PercentageOfPointsToKeep;
};

} // end namespace itk

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkLeastTrimmedSquaresPointMetric.txx"
#endif

#endif