itkObjectMorphologyImageFilter.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 __itkObjectMorphologyImageFilter_h
#define __itkObjectMorphologyImageFilter_h

#include "itkImageToImageFilter.h"
#include "itkNeighborhoodIterator.h"
#include "itkConstSliceIterator.h"
#include "itkConstantBoundaryCondition.h"
#include "itkImageRegionIterator.h"

namespace itk
{
template< class TInputImage, class TOutputImage, class TKernel >
class ITK_EXPORT ObjectMorphologyImageFilter:
  public ImageToImageFilter< TInputImage, TOutputImage >
{
public:
  typedef ObjectMorphologyImageFilter                     Self;
  typedef ImageToImageFilter< TInputImage, TOutputImage > Superclass;
  typedef SmartPointer< Self >                            Pointer;
  typedef SmartPointer< const Self >                      ConstPointer;

  itkTypeMacro(ObjectMorphologyImageFilter, ImageToImageFilter);

  typedef TInputImage                      InputImageType;
  typedef TOutputImage                     OutputImageType;
  typedef typename TInputImage::RegionType RegionType;
  typedef typename TInputImage::SizeType   SizeType;
  typedef typename TInputImage::IndexType  IndexType;
  typedef typename TInputImage::PixelType  PixelType;

  typedef typename Superclass::OutputImageRegionType OutputImageRegionType;

  typedef ImageBoundaryCondition< InputImageType > *
  ImageBoundaryConditionPointerType;
  typedef ImageBoundaryCondition< InputImageType > const *
  ImageBoundaryConditionConstPointerType;
  typedef ConstantBoundaryCondition< InputImageType >
  DefaultBoundaryConditionType;

  itkStaticConstMacro(ImageDimension, unsigned int,
                      TInputImage::ImageDimension);
  itkStaticConstMacro(OutputImageDimension, unsigned int,
                      TOutputImage::ImageDimension);
  itkStaticConstMacro(KernelDimension, unsigned int,
                      TKernel::NeighborhoodDimension);

  typedef ConstNeighborhoodIterator< TInputImage >
  InputNeighborhoodIteratorType;
  typedef NeighborhoodIterator< TOutputImage >
  OutputNeighborhoodIteratorType;

  typedef TKernel KernelType;

  typedef typename KernelType::ConstIterator KernelIteratorType;

  typedef typename KernelType::SizeType RadiusType;

  itkSetMacro(Kernel, KernelType);

  itkGetConstReferenceMacro(Kernel, KernelType);

  itkGetConstMacro(ObjectValue, PixelType);

  itkSetMacro(ObjectValue, PixelType);

  void GenerateInputRequestedRegion();

  void OverrideBoundaryCondition(const ImageBoundaryConditionPointerType i)
  { m_BoundaryCondition = i; }

  void ResetBoundaryCondition()
  { m_BoundaryCondition = &m_DefaultBoundaryCondition; }

  itkGetConstMacro(BoundaryCondition, ImageBoundaryConditionPointerType);

  itkSetMacro(UseBoundaryCondition, bool);

  itkGetConstMacro(UseBoundaryCondition, bool);

#ifdef ITK_USE_CONCEPT_CHECKING

  itkConceptMacro( SameDimensionCheck1,
                   ( Concept::SameDimension< ImageDimension, OutputImageDimension > ) );
  itkConceptMacro( SameDimensionCheck2,
                   ( Concept::SameDimension< ImageDimension, KernelDimension > ) );
  itkConceptMacro( OutputInputEqualityComparableCheck,
                   ( Concept::EqualityComparable< typename TOutputImage::PixelType,
                                                  PixelType > ) );
  itkConceptMacro( InputConvertibleToOutputCheck,
                   ( Concept::Convertible< PixelType, typename TOutputImage::PixelType > ) );
  itkConceptMacro( IntConvertibleToOutputCheck,
                   ( Concept::Convertible< int, typename TOutputImage::PixelType > ) );
  itkConceptMacro( InputEqualityComparable,
                   ( Concept::EqualityComparable< PixelType > ) );
  itkConceptMacro( InputOStreamWritableCheck,
                   ( Concept::OStreamWritable< PixelType > ) );

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

  void  ThreadedGenerateData(const OutputImageRegionType &
                             outputRegionForThread,
                             ThreadIdType threadId);

  virtual void Evaluate(OutputNeighborhoodIteratorType & nit,
                        const KernelType & kernel) = 0;

  bool IsObjectPixelOnBoundary(const InputNeighborhoodIteratorType & nit);

  ImageBoundaryConditionPointerType m_BoundaryCondition;

  DefaultBoundaryConditionType m_DefaultBoundaryCondition;

  bool m_UseBoundaryCondition;

  KernelType m_Kernel;

  PixelType m_ObjectValue;

  void BeforeThreadedGenerateData();

private:
  ObjectMorphologyImageFilter(const Self &); //purposely not implemented
  void operator=(const Self &);              //purposely not implemented
};                                           // end of class
} // end namespace itk

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

#endif