itkHistogramToTextureFeaturesFilter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkHistogramToTextureFeaturesFilter.h,v $
  Language:  C++
  Date:      $Date: 2009-05-08 16:55:05 $
  Version:   $Revision: 1.2 $

  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 __itkHistogramToTextureFeaturesFilter_h
#define __itkHistogramToTextureFeaturesFilter_h

#include "itkHistogram.h"
#include "itkMacro.h"
#include "itkProcessObject.h"
#include "itkSimpleDataObjectDecorator.h"

namespace itk {
namespace Statistics {

template < class THistogram >
class ITK_EXPORT HistogramToTextureFeaturesFilter : public ProcessObject
{
public:
  typedef HistogramToTextureFeaturesFilter                Self;
  typedef ProcessObject                                   Superclass;
  typedef SmartPointer<Self>                              Pointer;
  typedef SmartPointer<const Self>                        ConstPointer;

  itkTypeMacro(HistogramToTextureFeaturesFilter, ProcessObject);

  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::AbsoluteFrequencyType   AbsoluteFrequencyType;
  typedef typename HistogramType::RelativeFrequencyType   RelativeFrequencyType;

  typedef typename HistogramType::TotalAbsoluteFrequencyType   
                                                     TotalAbsoluteFrequencyType;

  typedef typename HistogramType::TotalRelativeFrequencyType   
                                                     TotalRelativeFrequencyType;

  typedef std::vector< RelativeFrequencyType >          RelativeFrequencyContainerType;

  void SetInput ( const HistogramType * histogram );
  const HistogramType * GetInput() const;

  typedef DataObject::Pointer                   DataObjectPointer;

  typedef SimpleDataObjectDecorator<MeasurementType>     MeasurementObjectType;

  MeasurementType GetEnergy() const;
  const MeasurementObjectType* GetEnergyOutput() const;

  MeasurementType GetEntropy() const;
  const MeasurementObjectType* GetEntropyOutput() const;

  MeasurementType GetCorrelation() const;
  const MeasurementObjectType* GetCorrelationOutput() const;

  MeasurementType GetInverseDifferenceMoment() const;
  const MeasurementObjectType* GetInverseDifferenceMomentOutput() const;

  MeasurementType GetInertia() const;
  const MeasurementObjectType* GetInertiaOutput() const;

  MeasurementType GetClusterShade() const;
  const MeasurementObjectType* GetClusterShadeOutput() const;

  MeasurementType GetClusterProminence() const;
  const MeasurementObjectType* GetClusterProminenceOutput() const;

  MeasurementType GetHaralickCorrelation() const;
  const MeasurementObjectType* GetHaralickCorrelationOutput() const;

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

  MeasurementType GetFeature( TextureFeatureName name );

  
protected:
  HistogramToTextureFeaturesFilter();
  ~HistogramToTextureFeaturesFilter() {};
  void PrintSelf(std::ostream& os, Indent indent) const;

  virtual DataObjectPointer MakeOutput( unsigned int );


  void GenerateData();

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

  void ComputeMeansAndVariances( double &pixelMean, double &marginalMean, 
    double &marginalDevSquared, double &pixelVariance );

  RelativeFrequencyContainerType             m_RelativeFrequencyContainer;
};
    
    
} // end of namespace Statistics 
} // end of namespace itk 

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

#endif

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