itkThresholdMaximumConnectedComponentsImageFilter.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 itkThresholdMaximumConnectedComponentsImageFilter_h
#define itkThresholdMaximumConnectedComponentsImageFilter_h

#include "itkBinaryThresholdImageFilter.h"
#include "itkConnectedComponentImageFilter.h"
#include "itkRelabelComponentImageFilter.h"
#include "itkMinimumMaximumImageCalculator.h"
#include "itkCastImageFilter.h"


namespace itk
{
template< typename TInputImage, typename TOutputImage = TInputImage >
class ThresholdMaximumConnectedComponentsImageFilter:
  public ImageToImageFilter< TInputImage, TOutputImage >
{
public:
  typedef ThresholdMaximumConnectedComponentsImageFilter  Self;
  typedef ImageToImageFilter< TInputImage, TOutputImage > Superclass;
  typedef SmartPointer< Self >                            Pointer;
  typedef SmartPointer< const Self >                      ConstPointer;

  itkNewMacro(Self);

  itkTypeMacro(ThresholdMaximumConnectedComponentsImageFilter,
               ImageToImageFilter);

  typedef typename TInputImage::PixelType  PixelType;
  typedef typename TOutputImage::PixelType OutputPixelType;

  itkConceptMacro( PixelTypeComparable, ( Concept::Comparable< PixelType > ) );

  itkSetMacro(MinimumObjectSizeInPixels, unsigned int);
  itkGetConstMacro(MinimumObjectSizeInPixels, unsigned int);

  itkSetMacro(InsideValue, OutputPixelType);
  itkSetMacro(OutsideValue, OutputPixelType);
  itkSetMacro(UpperBoundary, PixelType);
  itkGetConstMacro(InsideValue, OutputPixelType);
  itkGetConstMacro(OutsideValue, OutputPixelType);
  itkGetConstMacro(UpperBoundary, PixelType);

  itkGetConstMacro(NumberOfObjects, SizeValueType);

  itkGetConstMacro(ThresholdValue, PixelType);

  typedef TInputImage                           InputImageType;
  typedef typename InputImageType::ConstPointer InputImagePointer;
  typedef typename InputImageType::RegionType   InputImageRegionType;
  typedef typename InputImageType::PixelType    InputImagePixelType;

  typedef TOutputImage                         OutputImageType;
  typedef typename OutputImageType::Pointer    OutputImagePointer;
  typedef typename OutputImageType::RegionType OutputImageRegionType;
  typedef typename OutputImageType::PixelType  OutputImagePixelType;

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

  void GenerateData(void) ITK_OVERRIDE;

  SizeValueType ComputeConnectedComponents();

private:

  typedef unsigned int FilterPixelType;

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

  typedef itk::Image< FilterPixelType, itkGetStaticConstMacro(ImageDimension) >
  FilterImageType;

  typedef typename FilterImageType::Pointer FilterImagePointer;

  //purposely not implemented
  ThresholdMaximumConnectedComponentsImageFilter(const Self &);
  void operator=(const Self &); //purposely not implemented

  //
  // Binary Threshold Filter
  //
  typedef BinaryThresholdImageFilter< InputImageType, OutputImageType >
  ThresholdFilterType;

  //
  // Connected Components Filter
  //
  typedef ConnectedComponentImageFilter< OutputImageType, FilterImageType >
  ConnectedFilterType;

  //
  // Relabeled Components Filter
  //
  typedef RelabelComponentImageFilter< FilterImageType, FilterImageType >
  RelabelFilterType;

  //
  // Minimum maximum calculator
  //
  typedef MinimumMaximumImageCalculator< InputImageType > MinMaxCalculatorType;

  //
  // Declare member variables for the filters of the internal pipeline.
  //
  typename ThresholdFilterType::Pointer m_ThresholdFilter;
  typename ConnectedFilterType::Pointer m_ConnectedComponent;

  typename RelabelFilterType::Pointer m_LabeledComponent;

  typename MinMaxCalculatorType::Pointer m_MinMaxCalculator;

  // Variables defined by the user
  unsigned int m_MinimumObjectSizeInPixels;

  // Binary threshold variables
  OutputPixelType m_OutsideValue;
  OutputPixelType m_InsideValue;

  PixelType m_LowerBoundary;
  PixelType m_UpperBoundary;

  // Filter variables
  PixelType     m_ThresholdValue;
  SizeValueType m_NumberOfObjects;
};
} // end namespace itk

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

#endif