itkLabelMapToBinaryImageFilter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkLabelMapToBinaryImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2009-08-07 11:28:02 $
  Version:   $Revision: 1.2 $

  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 __itkLabelMapToBinaryImageFilter_h
#define __itkLabelMapToBinaryImageFilter_h

#include "itkLabelMapFilter.h"
#include "itkBarrier.h"

namespace itk {

template<class TInputImage, class TOutputImage>
class ITK_EXPORT LabelMapToBinaryImageFilter : 
    public LabelMapFilter<TInputImage, TOutputImage>
{
public:
  typedef LabelMapToBinaryImageFilter               Self;
  typedef LabelMapFilter<TInputImage, TOutputImage> Superclass;
  typedef SmartPointer<Self>                        Pointer;
  typedef SmartPointer<const Self>                  ConstPointer;

  typedef TInputImage                              InputImageType;
  typedef TOutputImage                             OutputImageType;
  typedef typename InputImageType::Pointer         InputImagePointer;
  typedef typename InputImageType::ConstPointer    InputImageConstPointer;
  typedef typename InputImageType::RegionType      InputImageRegionType;
  typedef typename InputImageType::PixelType       InputImagePixelType;
  typedef typename InputImageType::LabelObjectType LabelObjectType;

  typedef typename OutputImageType::Pointer        OutputImagePointer;
  typedef typename OutputImageType::ConstPointer   OutputImageConstPointer;
  typedef typename OutputImageType::RegionType     OutputImageRegionType;
  typedef typename OutputImageType::PixelType      OutputImagePixelType;
  typedef typename OutputImageType::IndexType      IndexType;
  
  itkStaticConstMacro(InputImageDimension, unsigned int, TInputImage::ImageDimension);
  itkStaticConstMacro(OutputImageDimension, unsigned int, TOutputImage::ImageDimension);

  itkNewMacro(Self);  

  itkTypeMacro(LabelMapToBinaryImageFilter, ImageToImageFilter);

  itkSetMacro(BackgroundValue, OutputImagePixelType);
  itkGetConstMacro(BackgroundValue, OutputImagePixelType);

  itkSetMacro(ForegroundValue, OutputImagePixelType);
  itkGetConstMacro(ForegroundValue, OutputImagePixelType);

  void SetBackgroundImage( const OutputImageType *input)
    {
    // Process object is not const-correct so the const casting is required.
    this->SetNthInput( 1, const_cast<OutputImageType *>(input) );
    }

  OutputImageType * GetBackgroundImage()
    {
    return static_cast<OutputImageType*>(const_cast<DataObject *>(this->ProcessObject::GetInput(1)));
    }

  void SetInput1( const InputImageType * input )
    {
    this->SetInput( input );
    }

  void SetInput2( const OutputImageType * input )
    {
    this->SetBackgroundImage( input );
    }

protected:
  LabelMapToBinaryImageFilter();
  ~LabelMapToBinaryImageFilter() {};

  void GenerateInputRequestedRegion();

  void EnlargeOutputRequestedRegion(DataObject *itkNotUsed(output));

  virtual void BeforeThreadedGenerateData();

  virtual void ThreadedGenerateData(const OutputImageRegionType& outputRegionForThread, int threadId );

  virtual void ThreadedProcessLabelObject( LabelObjectType * labelObject );
  
  void PrintSelf(std::ostream& os, Indent indent) const;

private:
  LabelMapToBinaryImageFilter(const Self&); //purposely not implemented
  void operator=(const Self&); //purposely not implemented
  
  OutputImagePixelType          m_BackgroundValue;
  OutputImagePixelType          m_ForegroundValue;

  typename Barrier::Pointer     m_Barrier;

}; // end of class

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

#endif