itkFastApproximateRankImageFilter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkFastApproximateRankImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2009-04-23 03:43:41 $
  Version:   $Revision: 1.6 $

  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 __itkFastApproximateRankImageFilter_h
#define __itkFastApproximateRankImageFilter_h

#include "itkMiniPipelineSeparableImageFilter.h"
#include "itkRankImageFilter.h"

namespace itk {

template<class TInputImage, class TOutputImage>
class ITK_EXPORT FastApproximateRankImageFilter : 
public MiniPipelineSeparableImageFilter<TInputImage, TOutputImage,
  RankImageFilter<TInputImage, TInputImage,
    FlatStructuringElement< ::itk::GetImageDimension<TInputImage>::ImageDimension > > >
{
public:
  typedef FastApproximateRankImageFilter                    Self;
  typedef MiniPipelineSeparableImageFilter<TInputImage, TOutputImage, RankImageFilter<TInputImage, TInputImage, FlatStructuringElement< ::itk::GetImageDimension<TInputImage>::ImageDimension > > >
                                                       Superclass;
  typedef SmartPointer<Self>                           Pointer;
  typedef SmartPointer<const Self>                     ConstPointer;

  itkNewMacro(Self);  

  itkTypeMacro(FastApproximateRankImageFilter,
               MiniPipelineSeparableImageFilter);

  typedef TInputImage                                  InputImageType;
  typedef typename TInputImage::RegionType             RegionType;
  typedef typename TInputImage::SizeType               SizeType;
  typedef typename TInputImage::IndexType              IndexType;
  typedef typename TInputImage::PixelType              PixelType;
  typedef typename TInputImage::OffsetType             OffsetType;
  typedef typename Superclass::FilterType              FilterType;

  itkStaticConstMacro(ImageDimension, unsigned int,
                      TInputImage::ImageDimension);

  typedef typename TInputImage::SizeType               RadiusType;

  void SetRank( float rank )
    {
    if( m_Rank != rank )
      {
      m_Rank = rank;
      for (unsigned i = 0; i < TInputImage::ImageDimension - 1; i++)
        {
        this->m_Filters[i]->SetRank( m_Rank );
        }
      this->Modified();
      }
    }
  itkGetConstMacro(Rank, float);

protected:
  FastApproximateRankImageFilter()
    {
    // to avoid valgrind warning
    m_Rank = 0.0;
    this->SetRank( 0.5 );
    }

  ~FastApproximateRankImageFilter() {}

  void PrintSelf(std::ostream &os, Indent indent) const
    {
    Superclass::PrintSelf(os, indent);
    os << indent << "Rank: " << m_Rank << std::endl;
    }

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

  float m_Rank;
};

}

#endif

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