itkMorphologyImageFilter.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 __itkMorphologyImageFilter_h
#define __itkMorphologyImageFilter_h

#include "itkKernelImageFilter.h"
#include "itkNeighborhoodIterator.h"
#include "itkNeighborhood.h"
#include "itkConstSliceIterator.h"
#include "itkConstantBoundaryCondition.h"
#include "itkImageRegionIterator.h"

namespace itk
{
template< typename TInputImage, typename TOutputImage, typename TKernel >
class MorphologyImageFilter:
  public KernelImageFilter< TInputImage, TOutputImage, TKernel >
{
public:
  typedef MorphologyImageFilter                                   Self;
  typedef KernelImageFilter< TInputImage, TOutputImage, TKernel > Superclass;
  typedef SmartPointer< Self >                                    Pointer;
  typedef SmartPointer< const Self >                              ConstPointer;

  itkTypeMacro(MorphologyImageFilter, KernelImageFilter);

  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;

  itkStaticConstMacro(ImageDimension, unsigned int,
                      TInputImage::ImageDimension);

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

  typedef ConstNeighborhoodIterator< TInputImage > NeighborhoodIteratorType;

  typedef TKernel KernelType;

  typedef typename KernelType::ConstIterator KernelIteratorType;

  typedef typename KernelType::SizeType RadiusType;

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

  void ResetBoundaryCondition()
  {
    m_BoundaryCondition = &m_DefaultBoundaryCondition;
  }

  itkGetConstMacro(BoundaryCondition, ImageBoundaryConditionPointerType);

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

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

  virtual PixelType Evaluate(const NeighborhoodIteratorType & nit,
                             const KernelIteratorType kernelBegin,
                             const KernelIteratorType kernelEnd) = 0;

private:
  MorphologyImageFilter(const Self &); //purposely not implemented
  void operator=(const Self &);        //purposely not implemented

  ImageBoundaryConditionPointerType m_BoundaryCondition;

  DefaultBoundaryConditionType m_DefaultBoundaryCondition;
}; // end of class
} // end namespace itk

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

#endif