itkLabelMapToBinaryImageFilter.h

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/*=========================================================================
 *
 *  Copyright Insight Software Consortium
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/
#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, ThreadIdType 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.hxx"
#endif

#endif