itkLabelImageToLabelMapFilter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkLabelImageToLabelMapFilter.h,v $
  Language:  C++
  Date:      $Date: 2009-07-08 15:58:33 $
  Version:   $Revision: 1.4 $

  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 __itkLabelImageToLabelMapFilter_h
#define __itkLabelImageToLabelMapFilter_h

#include "itkImageToImageFilter.h"
#include "itkLabelMap.h"
#include "itkLabelObject.h"

namespace itk {

template<class TInputImage, class TOutputImage=LabelMap< LabelObject< typename TInputImage::PixelType, ::itk::GetImageDimension<TInputImage>::ImageDimension > > >
class ITK_EXPORT LabelImageToLabelMapFilter : 
    public ImageToImageFilter<TInputImage, TOutputImage>
{
public:
  typedef LabelImageToLabelMapFilter                    Self;
  typedef ImageToImageFilter<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::IndexType       IndexType;

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

  itkNewMacro(Self);  

  itkTypeMacro(LabelImageToLabelMapFilter, 
               ImageToImageFilter);

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

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

  void GenerateInputRequestedRegion();

  void EnlargeOutputRequestedRegion(DataObject *itkNotUsed(output));

  virtual void BeforeThreadedGenerateData();

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

  virtual void AfterThreadedGenerateData();
  

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

  OutputImagePixelType m_BackgroundValue;
  
  typename std::vector< OutputImagePointer > m_TemporaryImages;

}; // end of class

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

#endif