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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkMeanSquaresHistogramImageToImageMetric.h,v $
Language: C++
Date: $Date: 2003-09-10 14:28:34 $
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 __itkMeanSquaresHistogramImageToImageMetric_h
#define __itkMeanSquaresHistogramImageToImageMetric_h
#include "itkHistogramImageToImageMetric.h"
namespace itk
{
/** \class MeanSquaresHistogramImageToImageMetric
\brief Computes mean squared difference similarity measure between two
images to be registered.
This class is templated over the type of the fixed and moving
images to be compared.
This metric computes the similarity measure between pixels in the
moving image and pixels in the fixed images using a histogram.
\ingroup RegistrationMetrics */
template <class TFixedImage, class TMovingImage>
class ITK_EXPORT MeanSquaresHistogramImageToImageMetric :
public HistogramImageToImageMetric<TFixedImage, TMovingImage>
{
public:
/** Standard class typedefs. */
typedef MeanSquaresHistogramImageToImageMetric Self;
typedef HistogramImageToImageMetric<TFixedImage, 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(MeanSquaresHistogramImageToImageMetric,
HistogramImageToImageMetric);
/** 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::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 HistogramType::FrequencyType HistogramFrequencyType;
typedef typename HistogramType::Iterator HistogramIteratorType;
typedef typename HistogramType::MeasurementVectorType HistogramMeasurementVectorType;
protected:
/** Constructor is protected to ensure that \c New() function is used to
create instances. */
MeanSquaresHistogramImageToImageMetric(){}
virtual ~MeanSquaresHistogramImageToImageMetric(){}
/** Evaluates the sum of squared differences from the histogram. */
virtual MeasureType EvaluateMeasure(HistogramType& histogram) const;
private:
MeanSquaresHistogramImageToImageMetric(Self const&); // Purposely not implemented.
void operator=(Self const&); // Purposely not implemented.
};
} // End namespace itk.
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkMeanSquaresHistogramImageToImageMetric.txx"
#endif
#endif // __itkMeanSquaresHistogramImageToImageMetric_h
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