itkHypersphereKernelMeanShiftModeSeeker.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkHypersphereKernelMeanShiftModeSeeker.h,v $
  Language:  C++
  Date:      $Date: 2009-03-04 15:23:50 $
  Version:   $Revision: 1.9 $

  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;

  typedef double RealMeasurementType;

  typedef Array< RealMeasurementType > 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