itkOtsuThresholdImageCalculator.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkOtsuThresholdImageCalculator.h,v $
  Language:  C++
  Date:      $Date: 2009-04-23 03:53:36 $
  Version:   $Revision: 1.9 $

  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 __itkOtsuThresholdImageCalculator_h
#define __itkOtsuThresholdImageCalculator_h

#include "itkObject.h"
#include "itkObjectFactory.h"
#include "itkNumericTraits.h"

namespace itk
{

template <class TInputImage>
class ITK_EXPORT OtsuThresholdImageCalculator : public Object 
{
public:
  typedef OtsuThresholdImageCalculator Self;
  typedef Object                       Superclass;
  typedef SmartPointer<Self>           Pointer;
  typedef SmartPointer<const Self>     ConstPointer;

  itkNewMacro(Self);

  itkTypeMacro(OtsuThresholdImageCalculator, Object);

  typedef TInputImage  ImageType;

  typedef typename TInputImage::Pointer  ImagePointer;

  typedef typename TInputImage::ConstPointer ImageConstPointer;

  typedef typename TInputImage::PixelType PixelType;

  typedef typename TInputImage::RegionType RegionType;

  itkSetConstObjectMacro(Image,ImageType);

  void Compute(void);

  itkGetConstMacro(Threshold,PixelType);

  itkSetClampMacro( NumberOfHistogramBins, unsigned long, 1, 
                    NumericTraits<unsigned long>::max() );
  itkGetConstMacro( NumberOfHistogramBins, unsigned long );

  void SetRegion( const RegionType & region );

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

private:
  OtsuThresholdImageCalculator(const Self&); //purposely not implemented
  void operator=(const Self&); //purposely not implemented
  
  PixelType            m_Threshold;
  unsigned long        m_NumberOfHistogramBins;
  ImageConstPointer    m_Image;
  RegionType           m_Region;
  bool                 m_RegionSetByUser;

};

} // end namespace itk


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

#endif