itkFastChamferDistanceImageFilter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkFastChamferDistanceImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2003/09/10 14:28:30 $
  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 __itkFastChamferDistanceImageFilter_h
#define __itkFastChamferDistanceImageFilter_h

#include <itkImageToImageFilter.h>
#include <itkImageRegionIteratorWithIndex.h>
#include <itkNarrowBand.h>

namespace itk
{

template < class TInputImage, class TOutputImage >
class ITK_EXPORT FastChamferDistanceImageFilter :
    public ImageToImageFilter<TInputImage,TOutputImage>
{
public:
  typedef FastChamferDistanceImageFilter    Self;
  typedef ImageToImageFilter<TInputImage,TOutputImage> Superclass;
  typedef SmartPointer<Self> Pointer;
  typedef SmartPointer<const Self> ConstPointer;
  
  itkNewMacro(Self);
  
  itkTypeMacro( FastChamferDistanceImageFilter, ImageToImageFilter );
  
  typedef   TInputImage       InputImageType;
  
  typedef typename InputImageType::RegionType   RegionType;
  
  typedef typename InputImageType::PixelType   PixelType;
  
  typedef typename RegionType::IndexType  IndexType;
  
  typedef typename InputImageType::OffsetType  OffsetType;
  
  typedef typename RegionType::SizeType   SizeType;
  
  itkStaticConstMacro(ImageDimension, unsigned int,
                      InputImageType::ImageDimension);
  
  typedef typename InputImageType::ConstPointer InputImagePointer;
  
  typedef BandNode<IndexType,PixelType> BandNodeType;
  typedef NarrowBand<BandNodeType> NarrowBandType;
  typedef typename NarrowBandType::Pointer NarrowBandPointer;
  
  
  itkSetVectorMacro( Weights, float, ImageDimension);
  itkGetVectorMacro( Weights, const float, ImageDimension);
  
  
  itkSetMacro( MaximumDistance, float);
  itkGetMacro( MaximumDistance, float);

  void SetRegionToProcess( const RegionType &r)
  {
    if ( m_RegionToProcess != r)
      {
      m_RegionToProcess = r;
      this->Modified();
      }      
  }
  RegionType GetRegionToProcess() const
  {
    return m_RegionToProcess;
  }
  
  
  void SetNarrowBand( NarrowBandType * ptr)
  {  
    if ( m_NarrowBand != ptr )
      {
      m_NarrowBand = ptr;
      this->Modified();
      }
  }
  
  NarrowBandPointer GetNarrowBand() const
  { return m_NarrowBand; }
  
protected:
  FastChamferDistanceImageFilter();
  virtual ~FastChamferDistanceImageFilter() {};
  void PrintSelf(std::ostream& os, Indent indent) const;
  
  void GenerateDataND();  
  
  void GenerateData();  
  
private:   
  FastChamferDistanceImageFilter(const Self&); //purposely not implemented
  void operator=(const Self&); //purposely not implemented
  
  float  m_MaximumDistance;
  
  float  m_Weights[ImageDimension];
  
  NarrowBandPointer m_NarrowBand;
  
  typename InputImageType::RegionType m_RegionToProcess;
  
  
}; // end of FastChamferDistanceImageFilter class

} //end namespace itk


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

#endif

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