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 ITK_TEMPLATE_EXPORT FastChamferDistanceImageFilter:
  public ImageToImageFilter< TInputImage, TOutputImage >
{
public:
  ITK_DISALLOW_COPY_AND_ASSIGN(FastChamferDistanceImageFilter);

  using Self = FastChamferDistanceImageFilter;
  using Superclass = ImageToImageFilter< TInputImage, TOutputImage >;
  using Pointer = SmartPointer< Self >;
  using ConstPointer = SmartPointer< const Self >;

  itkNewMacro(Self);

  itkTypeMacro(FastChamferDistanceImageFilter, ImageToImageFilter);

  using InputImageType = TInputImage;

  using OutputImageType = TOutputImage;

  using RegionType = typename InputImageType::RegionType;

  using PixelType = typename InputImageType::PixelType;

  using IndexType = typename RegionType::IndexType;

  using OffsetType = typename InputImageType::OffsetType;

  using SizeType = typename RegionType::SizeType;

  static constexpr unsigned int ImageDimension = InputImageType::ImageDimension;
  static constexpr unsigned int OutputImageDimension = OutputImageType::ImageDimension;

  using InputImagePointer = typename InputImageType::ConstPointer;

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

  using WeightsType = FixedArray< float, ImageDimension >;

  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();
  ~FastChamferDistanceImageFilter() override = default;
  void PrintSelf(std::ostream & os, Indent indent) const override;

  void GenerateDataND();

  void GenerateData() override;

private:
  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