itkHypersphereKernelMeanShiftModeSeeker.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkHypersphereKernelMeanShiftModeSeeker.h,v $
  Language:  C++
  Date:      $Date: 2003/12/09 16:53:08 $
  Version:   $Revision: 1.7 $

  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 __itkHypersphereKernelMeanShiftModeSeeker_h
#define __itkHypersphereKernelMeanShiftModeSeeker_h

#include "itkMeanShiftModeSeekerBase.h"

#include "itkFixedArray.h"
#include "itkNumericTraits.h"

namespace itk{ 
namespace Statistics{

template< class TSample >
class HypersphereKernelMeanShiftModeSeeker :
    public MeanShiftModeSeekerBase< TSample >
{
public:
  typedef HypersphereKernelMeanShiftModeSeeker Self;
  typedef MeanShiftModeSeekerBase< TSample > Superclass ;
  typedef SmartPointer<Self> Pointer;
  typedef SmartPointer<const Self> ConstPointer;

  itkTypeMacro(HypersphereKernelMeanShiftModeSeeker, 
               MeanShiftModeSeekerBase);
  itkNewMacro(Self) ;
  
  typedef typename Superclass::MeasurementVectorType MeasurementVectorType ;
  typedef typename Superclass::SearchResultVectorType SearchResultVectorType ;
  typedef typename Superclass::MeasurementType MeasurementType ;

  itkStaticConstMacro( MeasurementVectorSize, unsigned int,
                       MeasurementVectorType::Length ) ;

  typedef double RealMeasurementType ;

  typedef FixedArray< RealMeasurementType,
                      itkGetStaticConstMacro( MeasurementVectorSize ) > 
  MeasurementVectorSumType ;

  void SetSearchRadius(double radius) ;
  
  double GetSearchRadius()
  { return m_SearchRadius ; }

  MeasurementVectorType Evolve(MeasurementVectorType instance) ;
  
protected:
  HypersphereKernelMeanShiftModeSeeker() ;
  virtual ~HypersphereKernelMeanShiftModeSeeker() ;
  void PrintSelf(std::ostream& os, Indent indent) const;

  inline bool ComputeMode(MeasurementVectorType queryPoint,
                          MeasurementVectorType& newPoint) ;

private:
  double m_SearchRadius ;

  MeasurementVectorSumType m_TempVectorSum ;
  
  MeasurementVectorType m_TempVector ;
} ; // end of class
    
} // end of namespace Statistics 
} // end of namespace itk 

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

#endif

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