itkGreyLevelCooccurrenceMatrixTextureCoefficientsCalculator.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkGreyLevelCooccurrenceMatrixTextureCoefficientsCalculator.h,v $
  Language:  C++
  Date:      $Date: 2005-04-20 20:31:22 $
  Version:   $Revision: 1.4 $

  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 __itkGreyLevelCooccurrenceMatrixTextureCoefficientsCalculator_h
#define __itkGreyLevelCooccurrenceMatrixTextureCoefficientsCalculator_h

#include "itkHistogram.h"
#include "itkMacro.h"

namespace itk {
  namespace Statistics {

enum TextureFeatureName { Energy, Entropy, Correlation,
  InverseDifferenceMoment, Inertia, ClusterShade, ClusterProminence,
  HaralickCorrelation };

template< class THistogram >
class GreyLevelCooccurrenceMatrixTextureCoefficientsCalculator : public Object
  {
  public:
    typedef GreyLevelCooccurrenceMatrixTextureCoefficientsCalculator Self;
    typedef Object Superclass;
    typedef SmartPointer<Self> Pointer;
    typedef SmartPointer<const Self> ConstPointer;

    itkTypeMacro(GreyLevelCooccurrenceMatrixTextureCoefficientsCalculator, Object);

    itkNewMacro(Self) ;

    typedef THistogram                                      HistogramType;
    typedef typename HistogramType::Pointer                 HistogramPointer;
    typedef typename HistogramType::ConstPointer            HistogramConstPointer;
    typedef typename HistogramType::MeasurementType         MeasurementType;
    typedef typename HistogramType::MeasurementVectorType   MeasurementVectorType;
    typedef typename HistogramType::IndexType               IndexType;
    typedef typename HistogramType::FrequencyType           FrequencyType;
    
    void Compute( void );

    itkSetObjectMacro( Histogram, HistogramType );
    itkGetObjectMacro( Histogram, HistogramType );

    double GetFeature(TextureFeatureName feature);

    itkGetMacro(Energy, double);
    itkGetMacro(Entropy, double);
    itkGetMacro(Correlation, double);
    itkGetMacro(InverseDifferenceMoment, double);
    itkGetMacro(Inertia, double);
    itkGetMacro(ClusterShade, double);
    itkGetMacro(ClusterProminence, double);
    itkGetMacro(HaralickCorrelation, double);
    
  protected:
    GreyLevelCooccurrenceMatrixTextureCoefficientsCalculator() {};
    virtual ~GreyLevelCooccurrenceMatrixTextureCoefficientsCalculator() {};
    void PrintSelf(std::ostream& os, Indent indent) const;    

   private:
    HistogramPointer m_Histogram;
    double m_Energy, m_Entropy, m_Correlation, m_InverseDifferenceMoment,
      m_Inertia, m_ClusterShade, m_ClusterProminence, m_HaralickCorrelation;
    void NormalizeHistogram(void);
    void ComputeMeansAndVariances( double &pixelMean, double &marginalMean, 
      double &marginalDevSquared, double &pixelVariance );
  };
    
    
  } // end of namespace Statistics 
} // end of namespace itk 

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

#endif

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