itkClassifierBase.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkClassifierBase.h,v $
  Language:  C++
  Date:      $Date: 2008-10-23 16:15:23 $
  Version:   $Revision: 1.12 $

  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 __itkClassifierBase_h
#define __itkClassifierBase_h

#include "itkLightProcessObject.h"
#include "itkMembershipFunctionBase.h"
#include "itkDecisionRuleBase.h"

#include <vector>

namespace itk
{

template <class TDataContainer>
class ITK_EXPORT ClassifierBase : public LightProcessObject
{
public:
  typedef ClassifierBase     Self;
  typedef LightProcessObject Superclass;

  itkTypeMacro(ClassifierBase,LightProcessObject);

  itkSetMacro(NumberOfClasses, unsigned int);

  itkGetConstReferenceMacro(NumberOfClasses, unsigned int);

  typedef typename TDataContainer::ValueType MeasurementVectorType;
  
  typedef Statistics::MembershipFunctionBase< MeasurementVectorType > 
                                                   MembershipFunctionType;
  typedef typename MembershipFunctionType::Pointer MembershipFunctionPointer;

  typedef std::vector< MembershipFunctionPointer > 
  MembershipFunctionPointerVector;

  typedef DecisionRuleBase DecisionRuleType;

  void SetDecisionRule( DecisionRuleType* ptrToDecisionRule )
    {
    m_DecisionRule = ptrToDecisionRule;
    }

  DecisionRuleType* GetDecisionRule(void)
    {
    return m_DecisionRule.GetPointer();
    }
  
  const MembershipFunctionType* GetMembershipFunction(unsigned int index)const
    {
    return m_MembershipFunctions[index].GetPointer();
    }

  unsigned int GetNumberOfMembershipFunctions() 
    {
    return static_cast<unsigned int>( m_MembershipFunctions.size() );
    }

  unsigned int AddMembershipFunction(MembershipFunctionType* function);

  void Update();
  
protected:
  ClassifierBase();
  ~ClassifierBase();
  void PrintSelf(std::ostream& os, Indent indent) const;

  virtual void GenerateData() = 0;

private:
  ClassifierBase(const Self&); //purposely not implemented
  void operator=(const Self&); //purposely not implemented

  unsigned int                       m_NumberOfClasses;

  typename DecisionRuleType::Pointer m_DecisionRule;

  MembershipFunctionPointerVector    m_MembershipFunctions;

}; // class Classifier


} // namespace itk

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

#endif