itkWatershedEquivalenceRelabeler.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkWatershedEquivalenceRelabeler.h,v $
  Language:  C++
  Date:      $Date: 2009-01-27 19:30:17 $
  Version:   $Revision: 1.10 $

  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 __itkWatershedEquivalenceRelabeler_h
#define __itkWatershedEquivalenceRelabeler_h

#include "itkEquivalencyTable.h"
#include "itkWatershedSegmenter.h"
#include "itkImage.h"

namespace itk
{
namespace watershed
{
template <class TScalarType, unsigned int TImageDimension>
class ITK_EXPORT EquivalenceRelabeler
  : public ProcessObject
{
public:
  itkStaticConstMacro(ImageDimension, unsigned int,TImageDimension);
  
  typedef Image<unsigned long, TImageDimension>          ImageType;
  typedef EquivalenceRelabeler                           Self;
  typedef ProcessObject                                  Superclass;
  typedef TScalarType                                    ScalarType;
  typedef EquivalencyTable                               EquivalencyTableType;
  typedef Segmenter<Image<ScalarType, TImageDimension> > SegmenterType;
  typedef DataObject::Pointer                            DataObjectPointer;
  
  typedef SmartPointer<Self>       Pointer;
  typedef SmartPointer<const Self> ConstPointer;
  itkNewMacro(Self);
  itkTypeMacro(WatershedEquivalenceRelabeler, ProcessObject);

  void SetInputImage(ImageType *img)
    { this->ProcessObject::SetNthInput(0, img); }
  const ImageType * GetInputImage(void)
    {
    return static_cast<ImageType *>
      (this->ProcessObject::GetInput(0));
    }

  void SetOutputImage(ImageType * img)
    {
    this->ProcessObject::SetNthOutput(0,img);
    }
  typename ImageType::Pointer GetOutputImage()
    {
    return static_cast<ImageType *>
      (this->ProcessObject::GetOutput(0));
    }
  
  void SetEquivalencyTable(EquivalencyTableType *et)
    {
    this->ProcessObject::SetNthInput(1, et);
    }
  EquivalencyTableType::Pointer GetEquivalencyTable()
    {
    return static_cast<EquivalencyTableType *>
      (this->ProcessObject::GetInput(1));
    }

  void GenerateData();

  virtual DataObjectPointer MakeOutput(unsigned int idx);

protected:
  EquivalenceRelabeler()
    {
    typename ImageType::Pointer img
      = static_cast<ImageType*>(this->MakeOutput(0).GetPointer());
    this->SetNumberOfRequiredOutputs(1);
    this->ProcessObject::SetNthOutput(0, img.GetPointer());
    }
  virtual ~EquivalenceRelabeler() {}
  EquivalenceRelabeler(const Self&) {}
  void operator=(const Self&) {}
  void PrintSelf(std::ostream& os, Indent indent) const;
  
  void GenerateOutputRequestedRegion(DataObject *output);
  void GenerateInputRequestedRegion();
};
  
}// end namespace watershed
}// end namespace itk

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

#endif