text: /*=========================================================================
   *
   *  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 itkGrayscaleMorphologicalClosingImageFilter_h
  #define itkGrayscaleMorphologicalClosingImageFilter_h
  
  #include "itkKernelImageFilter.h"
  #include "itkMovingHistogramErodeImageFilter.h"
  #include "itkMovingHistogramDilateImageFilter.h"
  #include "itkBasicErodeImageFilter.h"
  #include "itkBasicDilateImageFilter.h"
  #include "itkAnchorCloseImageFilter.h"
  #include "itkVanHerkGilWermanErodeImageFilter.h"
  #include "itkVanHerkGilWermanDilateImageFilter.h"
  #include "itkCastImageFilter.h"
  #include "itkConstantBoundaryCondition.h"
  #include "itkNeighborhood.h"
  
  namespace itk
  {
  /**
   * \class GrayscaleMorphologicalClosingImageFilter
   * \brief gray scale dilation of an image
   *
   * Erode an image using grayscale morphology. Dilation takes the
   * maximum of all the pixels identified by the structuring element.
   *
   * The structuring element is assumed to be composed of binary
   * values (zero or one). Only elements of the structuring element
   * having values > 0 are candidates for affecting the center pixel.
   *
   * \sa MorphologyImageFilter, GrayscaleFunctionErodeImageFilter, BinaryErodeImageFilter
   * \ingroup ImageEnhancement  MathematicalMorphologyImageFilters
   * \ingroup ITKMathematicalMorphology
   */
  
  template< typename TInputImage, typename TOutputImage, typename TKernel >
  class ITK_TEMPLATE_EXPORT GrayscaleMorphologicalClosingImageFilter:
    public KernelImageFilter< TInputImage, TOutputImage, TKernel >
  {
  public:
    /** Standard class typedefs. */
    typedef GrayscaleMorphologicalClosingImageFilter                Self;
    typedef KernelImageFilter< TInputImage, TOutputImage, TKernel > Superclass;
    typedef SmartPointer< Self >                                    Pointer;
    typedef SmartPointer< const Self >                              ConstPointer;
  
    /** Standard New method. */
    itkNewMacro(Self);
  
    /** Runtime information support. */
    itkTypeMacro(GrayscaleMorphologicalClosingImageFilter,
                 KernelImageFilter);
  
    /** Image related typedefs. */
    itkStaticConstMacro(ImageDimension, unsigned int,
                        TInputImage::ImageDimension);
  
    /** define values used to determine which algorithm to use */
    enum AlgorithmType {
      BASIC = 0,
      HISTO = 1,
      ANCHOR = 2,
      VHGW = 3
      };
  
    /** Image related typedefs. */
    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 TInputImage::OffsetType           OffsetType;
    typedef typename Superclass::OutputImageRegionType OutputImageRegionType;
  
    typedef FlatStructuringElement< itkGetStaticConstMacro(ImageDimension) >
    FlatKernelType;
    typedef MovingHistogramErodeImageFilter< TInputImage, TOutputImage, TKernel >
    HistogramErodeFilterType;
    typedef MovingHistogramDilateImageFilter< TInputImage, TOutputImage, TKernel >
    HistogramDilateFilterType;
    typedef BasicDilateImageFilter< TInputImage, TInputImage, TKernel >
    BasicDilateFilterType;
    typedef BasicErodeImageFilter< TInputImage, TOutputImage, TKernel >
    BasicErodeFilterType;
    typedef AnchorCloseImageFilter< TInputImage, FlatKernelType > AnchorFilterType;
    typedef VanHerkGilWermanErodeImageFilter< TInputImage, FlatKernelType >
    VanHerkGilWermanErodeFilterType;
    typedef VanHerkGilWermanDilateImageFilter< TInputImage, FlatKernelType >
    VanHerkGilWermanDilateFilterType;
    typedef CastImageFilter< TInputImage, TOutputImage > SubtractFilterType;
  
    /** Kernel typedef. */
    typedef TKernel KernelType;
  //   typedef typename KernelType::Superclass KernelSuperclass;
  //   typedef Neighborhood< typename KernelType::PixelType, ImageDimension >
  // KernelSuperclass;
  
    /** Set kernel (structuring element). */
    void SetKernel(const KernelType & kernel) ITK_OVERRIDE;
  
    /** Set/Get the backend filter class. */
    void SetAlgorithm(int algo);
    itkGetConstMacro(Algorithm, int);
  
    /** GrayscaleMorphologicalClosingImageFilter need to set its internal filters
      as modified */
    virtual void Modified() const ITK_OVERRIDE;
  
    /** A safe border is added to input image to avoid borders effects
     * and remove it once the closing is done */
    itkSetMacro(SafeBorder, bool);
    itkGetConstReferenceMacro(SafeBorder, bool);
    itkBooleanMacro(SafeBorder);
  
  protected:
    GrayscaleMorphologicalClosingImageFilter();
    ~GrayscaleMorphologicalClosingImageFilter() {}
    void PrintSelf(std::ostream & os, Indent indent) const ITK_OVERRIDE;
  
    void GenerateData() ITK_OVERRIDE;
  
  private:
    ITK_DISALLOW_COPY_AND_ASSIGN(GrayscaleMorphologicalClosingImageFilter);
  
    // the filters used internally
    typename HistogramErodeFilterType::Pointer m_HistogramErodeFilter;
  
    typename HistogramDilateFilterType::Pointer m_HistogramDilateFilter;
  
    typename BasicErodeFilterType::Pointer m_BasicErodeFilter;
  
    typename BasicDilateFilterType::Pointer m_BasicDilateFilter;
  
    typename VanHerkGilWermanDilateFilterType::Pointer m_VanHerkGilWermanDilateFilter;
  
    typename VanHerkGilWermanErodeFilterType::Pointer m_VanHerkGilWermanErodeFilter;
  
    typename AnchorFilterType::Pointer m_AnchorFilter;
  
    // and the name of the filter
    int m_Algorithm;
  
    bool m_SafeBorder;
  }; // end of class
  } // end namespace itk
  
  #ifndef ITK_MANUAL_INSTANTIATION
  #include "itkGrayscaleMorphologicalClosingImageFilter.hxx"
  #endif
  
  #endif
  