itkMaximumRatioDecisionRule.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkMaximumRatioDecisionRule.h,v $
  Language:  C++
  Date:      $Date: 2005/07/15 21:51:01 $
  Version:   $Revision: 1.8 $

  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 __MaximumRatioDecisionRule_h
#define __MaximumRatioDecisionRule_h

#include "itkWin32Header.h"

#include <vector>
#include "vnl/vnl_matrix.h"

#include "itkNumericTraits.h"
#include "itkDecisionRuleBase.h"

namespace itk {

class ITKCommon_EXPORT MaximumRatioDecisionRule : 
    public DecisionRuleBase
{
public:
  typedef MaximumRatioDecisionRule Self ;
  typedef DecisionRuleBase Superclass;
  typedef SmartPointer<Self> Pointer;

  itkTypeMacro(MaximumRatioDecisionRule, DecisionRuleBase);

  itkNewMacro(Self) ;

  typedef float APrioriValueType ;
  typedef std::vector< APrioriValueType > APrioriVectorType ;


  typedef Superclass::VectorType  VectorType;
  typedef Superclass::ArrayType   ArrayType;


  virtual unsigned int Evaluate( const VectorType &discriminantScores) const;

  virtual unsigned int Evaluate( const ArrayType &discriminantScores) const;


  void SetAPriori(APrioriVectorType& values) ;

protected:
  MaximumRatioDecisionRule() ;
  virtual ~MaximumRatioDecisionRule() {}
  
private:
  unsigned int m_NumberOfClasses ;

  vnl_matrix< double > m_APrioriRatioMatrix ;
} ; // end of class

} // end of namespace
#endif

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