itkOtsuThresholdImageFilter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkOtsuThresholdImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2004/07/31 12:21:42 $
  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 __itkOtsuThresholdImageFilter_h
#define __itkOtsuThresholdImageFilter_h

#include "itkImageToImageFilter.h"
#include "itkFixedArray.h"

namespace itk {

template<class TInputImage, class TOutputImage>
class ITK_EXPORT OtsuThresholdImageFilter : 
    public ImageToImageFilter<TInputImage, TOutputImage>
{
public:
  typedef OtsuThresholdImageFilter Self;
  typedef ImageToImageFilter<TInputImage,TOutputImage>  Superclass;
  typedef SmartPointer<Self>        Pointer;
  typedef SmartPointer<const Self>  ConstPointer;
  
  itkNewMacro(Self);  

  itkTypeMacro(OtsuThresholdImageFilter, ImageToImageFilter);
  
  typedef typename TInputImage::PixelType   InputPixelType;
  typedef typename TOutputImage::PixelType   OutputPixelType;
  
  typedef typename TInputImage::Pointer InputImagePointer;
  typedef typename TOutputImage::Pointer OutputImagePointer;

  typedef typename TInputImage::SizeType  InputSizeType;
  typedef typename TInputImage::IndexType  InputIndexType;
  typedef typename TInputImage::RegionType InputImageRegionType;
  typedef typename TOutputImage::SizeType  OutputSizeType;
  typedef typename TOutputImage::IndexType  OutputIndexType;
  typedef typename TOutputImage::RegionType OutputImageRegionType;


  itkStaticConstMacro(InputImageDimension, unsigned int,
                      TInputImage::ImageDimension ) ;
  itkStaticConstMacro(OutputImageDimension, unsigned int,
                      TOutputImage::ImageDimension ) ;

  itkSetMacro(OutsideValue,OutputPixelType);
  
  itkGetMacro(OutsideValue,OutputPixelType);

  itkSetMacro(InsideValue,OutputPixelType);
  
  itkGetMacro(InsideValue,OutputPixelType);

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

  itkGetMacro(Threshold,InputPixelType);


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

  void GenerateInputRequestedRegion();
  void GenerateData ();

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

  InputPixelType      m_Threshold;
  OutputPixelType     m_InsideValue;
  OutputPixelType     m_OutsideValue;
  unsigned long       m_NumberOfHistogramBins;

} ; // end of class

} // end namespace itk
  
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkOtsuThresholdImageFilter.txx"
#endif

#endif

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