itkFastChamferDistanceImageFilter.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 __itkFastChamferDistanceImageFilter_h
#define __itkFastChamferDistanceImageFilter_h

#include "itkImageToImageFilter.h"
#include "itkImageRegionIteratorWithIndex.h"
#include "itkNarrowBand.h"

namespace itk
{
template< typename TInputImage, typename TOutputImage >
class 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   TOutputImage OutputImageType;

  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);
  itkStaticConstMacro(OutputImageDimension, unsigned int,
                      OutputImageType::ImageDimension);

  typedef typename InputImageType::ConstPointer InputImagePointer;

  typedef BandNode< IndexType, PixelType > BandNodeType;
  typedef NarrowBand< BandNodeType >       NarrowBandType;
  typedef typename NarrowBandType::Pointer NarrowBandPointer;

  typedef FixedArray< float, ImageDimension > WeightsType;

  itkSetMacro(Weights, WeightsType);
  itkGetConstReferenceMacro(Weights, WeightsType);

  itkSetMacro(MaximumDistance, float);
  itkGetConstMacro(MaximumDistance, float);

  void SetRegionToProcess(const RegionType & r);

  RegionType GetRegionToProcess() const;

  void SetNarrowBand(NarrowBandType *ptr);

  NarrowBandPointer GetNarrowBand() const;

#ifdef ITK_USE_CONCEPT_CHECKING
  // Begin concept checking
  itkConceptMacro( SameDimensionCheck,
                   ( Concept::SameDimension< ImageDimension, OutputImageDimension > ) );
  itkConceptMacro( SameTypeCheck,
                   ( Concept::SameType< PixelType, typename TOutputImage::PixelType > ) );
  itkConceptMacro( FloatConvertibleToPixelTypeCheck,
                   ( Concept::Convertible< float, PixelType > ) );
  itkConceptMacro( PixelTypeConvertibleToFloatCheck,
                   ( Concept::Convertible< PixelType, float > ) );
  itkConceptMacro( PixelTypeGreaterThanFloatCheck,
                   ( Concept::GreaterThanComparable< PixelType, float > ) );
  itkConceptMacro( PixelTypeLessThanFloatCheck,
                   ( Concept::LessThanComparable< PixelType, float > ) );
  itkConceptMacro( PixelTypeFloatAdditiveOperatorsCheck,
                   ( Concept::AdditiveOperators< PixelType, float, float > ) );
  itkConceptMacro( FloatGreaterThanPixelTypeCheck,
                   ( Concept::GreaterThanComparable< float, PixelType > ) );
  itkConceptMacro( FloatLessThanPixelTypeCheck,
                   ( Concept::LessThanComparable< float, PixelType > ) );
  // End concept checking
#endif

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;

  WeightsType m_Weights;

  NarrowBandPointer m_NarrowBand;

  RegionType m_RegionToProcess;
}; // end of FastChamferDistanceImageFilter class
} //end namespace itk

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

#endif