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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkEuclideanDistancePointMetric.h,v $
Language: C++
Date: $Date: 2006-10-16 00:13:58 $
Version: $Revision: 1.3 $
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef __itkEuclideanDistancePointMetric_h
#define __itkEuclideanDistancePointMetric_h
#include "itkPointSetToPointSetMetric.h"
#include "itkCovariantVector.h"
#include "itkPoint.h"
#include "itkPointSet.h"
#include "itkImage.h"
namespace itk
{
/** \class EuclideanDistancePointMetric
* \brief Computes the minimum distance between a moving point-set
* and a fixed point-set. A vector of minimum closest point distance is
* created for each point in the moving point-set.
* No correspondance is needed.
* For speed consideration, the point-set with the minimum number of points
* should be used as the moving point-set.
* If the number of points is high, the possibility of setting a distance map
* should improve the speed of the closest point computation.
*
* Reference: "A Method for Registration of 3-D Shapes",
* IEEE PAMI, Vol 14, No. 2, February 1992
*
* \ingroup RegistrationMetrics
*/
template < class TFixedPointSet, class TMovingPointSet,
class TDistanceMap = ::itk::Image<unsigned short,::itk::GetPointSetDimension<TMovingPointSet>::PointDimension> >
class ITK_EXPORT EuclideanDistancePointMetric :
public PointSetToPointSetMetric< TFixedPointSet, TMovingPointSet>
{
public:
/** Standard class typedefs. */
typedef EuclideanDistancePointMetric Self;
typedef PointSetToPointSetMetric<TFixedPointSet, TMovingPointSet > Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Run-time type information (and related methods). */
itkTypeMacro(EuclideanDistancePointMetric, Object);
/** Types transferred from the base class */
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;
typedef TDistanceMap DistanceMapType;
typedef typename DistanceMapType::ConstPointer DistanceMapPointer;
/** Get the number of values */
unsigned int GetNumberOfValues() const;
/** Get the derivatives of the match measure. */
void GetDerivative( const TransformParametersType & parameters,
DerivativeType & Derivative ) const;
/** Get the value for single valued optimizers. */
MeasureType GetValue( const TransformParametersType & parameters ) const;
/** Get value and derivatives for multiple valued optimizers. */
void GetValueAndDerivative( const TransformParametersType & parameters,
MeasureType& Value, DerivativeType& Derivative ) const;
/** Set/Get the distance map */
itkSetConstObjectMacro(DistanceMap,DistanceMapType);
itkGetConstObjectMacro(DistanceMap,DistanceMapType);
/** Set/Get if the distance should be squared. Default is true for computation speed */
itkSetMacro(ComputeSquaredDistance,bool);
itkGetMacro(ComputeSquaredDistance,bool);
itkBooleanMacro(ComputeSquaredDistance);
protected:
EuclideanDistancePointMetric();
virtual ~EuclideanDistancePointMetric() {};
/** PrintSelf funtion */
void PrintSelf(std::ostream& os, Indent indent) const;
private:
EuclideanDistancePointMetric(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
DistanceMapPointer m_DistanceMap;
bool m_ComputeSquaredDistance;
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkEuclideanDistancePointMetric.txx"
#endif
#endif
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