itkCovarianceSampleFilter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkCovarianceSampleFilter.h,v $
  Language:  C++
  Date:      $Date: 2009-05-02 05:43:55 $
  Version:   $Revision: 1.1 $

  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 __itkCovarianceSampleFilter_h
#define __itkCovarianceSampleFilter_h

#include "itkProcessObject.h"

#include "itkArray.h"
#include "itkVariableSizeMatrix.h"
#include "itkSimpleDataObjectDecorator.h"

namespace itk { 
namespace Statistics {
  
template< class TSample >
class ITK_EXPORT CovarianceSampleFilter :
    public ProcessObject
{
public:
  typedef CovarianceSampleFilter          Self;
  typedef ProcessObject                   Superclass;
  typedef SmartPointer<Self>              Pointer;
  typedef SmartPointer<const Self>        ConstPointer;
  typedef TSample                         SampleType;

  itkTypeMacro(CovarianceSampleFilter, ProcessObject);
  itkNewMacro(Self);

  typedef typename TSample::MeasurementVectorSizeType MeasurementVectorSizeType;

  typedef typename TSample::MeasurementVectorType MeasurementVectorType;

  typedef VariableSizeMatrix< double >               MatrixType;

  void SetInput( const SampleType * sample );
  const SampleType *  GetInput() const;

  typedef  SimpleDataObjectDecorator< MatrixType >  MatrixDecoratedType;

  typedef  SimpleDataObjectDecorator< MeasurementVectorType >  MeasurementVectorDecoratedType;

  typedef MeasurementVectorDecoratedType OutputType;
  
  const MatrixType GetCovarianceMatrix() const;
  const MatrixDecoratedType* GetCovarianceMatrixOutput() const;

  const MeasurementVectorType GetMean() const;
  const MeasurementVectorDecoratedType* GetMeanOutput() const;

protected:
  CovarianceSampleFilter(const Self&); //purposely not implemented
  void operator=(const Self&); //purposely not implemented

  CovarianceSampleFilter();
  virtual ~CovarianceSampleFilter();
  void PrintSelf(std::ostream& os, Indent indent) const;

  typedef DataObject::Pointer DataObjectPointer;

  virtual DataObjectPointer MakeOutput(unsigned int idx);

  void GenerateData();

  MeasurementVectorSizeType GetMeasurementVectorSize() const;

private:
}; // end of class
    
} // end of namespace Statistics 
} // end of namespace itk 

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

#endif

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