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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 itkMeanReciprocalSquareDifferencePointSetToImageMetric_h
#define itkMeanReciprocalSquareDifferencePointSetToImageMetric_h
#include "itkPointSetToImageMetric.h"
#include "itkCovariantVector.h"
#include "itkPoint.h"
namespace itk
{
/** \class MeanReciprocalSquareDifferencePointSetToImageMetric
* \brief Computes similarity between pixel values of a point set and
* intensity values in an image.
*
* This metric computes the average squared difference between pixels in
* the point set and transformed point set pixels in the moving image
* after passing the difference through a function of type
* \f$ \frac{1}{1+ \frac{ difference^2 }{ \lambda^2 } }\f$.
* \f$\lambda\f$ controls the capture radius of the metric. The term capture
* radius used here is in terms of intensity domain and not in the spatial
* domain.
*
* Spatial correspondance between both images is established through a
* Transform.
*
* \ingroup RegistrationMetrics
* \ingroup ITKRegistrationCommon
*/
template< typename TFixedPointSet, typename TMovingImage >
class ITK_TEMPLATE_EXPORT MeanReciprocalSquareDifferencePointSetToImageMetric:
public PointSetToImageMetric< TFixedPointSet, TMovingImage >
{
public:
/** Standard class typedefs. */
typedef MeanReciprocalSquareDifferencePointSetToImageMetric Self;
typedef PointSetToImageMetric< TFixedPointSet, TMovingImage > 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(MeanReciprocalSquareDifferencePointSetToImageMetric, Object);
/** Types transferred from the base class */
typedef typename Superclass::RealType RealType;
typedef typename Superclass::TransformType TransformType;
typedef typename Superclass::TransformPointer TransformPointer;
typedef typename Superclass::TransformParametersType TransformParametersType;
typedef typename Superclass::TransformJacobianType TransformJacobianType;
typedef typename Superclass::InputPointType InputPointType;
typedef typename Superclass::OutputPointType OutputPointType;
typedef typename Superclass::GradientPixelType GradientPixelType;
typedef typename Superclass::MeasureType MeasureType;
typedef typename Superclass::DerivativeType DerivativeType;
typedef typename Superclass::FixedPointSetType FixedPointSetType;
typedef typename Superclass::MovingImageType MovingImageType;
typedef typename Superclass::FixedPointSetConstPointer FixedPointSetConstPointer;
typedef typename Superclass::MovingImageConstPointer MovingImageConstPointer;
typedef typename Superclass::PointIterator PointIterator;
typedef typename Superclass::PointDataIterator PointDataIterator;
/** Get the derivatives of the match measure. */
void GetDerivative(const TransformParametersType & parameters,
DerivativeType & Derivative) const ITK_OVERRIDE;
/** Get the value for single valued optimizers. */
MeasureType GetValue(const TransformParametersType & parameters) const ITK_OVERRIDE;
/** Get value and derivatives for multiple valued optimizers. */
void GetValueAndDerivative(const TransformParametersType & parameters,
MeasureType & Value, DerivativeType & Derivative) const ITK_OVERRIDE;
/** Set/Get the lambda distance. (controls the capture radius of the metric).
*/
itkSetMacro(Lambda, double);
itkGetConstMacro(Lambda, double);
protected:
MeanReciprocalSquareDifferencePointSetToImageMetric();
virtual ~MeanReciprocalSquareDifferencePointSetToImageMetric() ITK_OVERRIDE {}
virtual void PrintSelf(std::ostream & os, Indent indent) const ITK_OVERRIDE;
private:
MeanReciprocalSquareDifferencePointSetToImageMetric(const Self &); //purposely
// not
// implemented
void operator=(const Self &); //purposely
// not
// implemented
double m_Lambda;
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkMeanReciprocalSquareDifferencePointSetToImageMetric.hxx"
#endif
#endif
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