itkMinimumMaximumImageFilter.h

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/*=========================================================================

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkMinimumMaximumImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2008-10-16 19:33:41 $
  Version:   $Revision: 1.13 $

  Copyright (c) Insight Software Consortium. All rights reserved.
  See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even 
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
     PURPOSE.  See the above copyright notices for more information.

=========================================================================*/
#ifndef __itkMinimumMaximumImageFilter_h
#define __itkMinimumMaximumImageFilter_h

#include "itkImageToImageFilter.h"
#include "itkSimpleDataObjectDecorator.h"

#include <vector>

#include "itkNumericTraits.h"

namespace itk
{
template <class TInputImage>
class ITK_EXPORT MinimumMaximumImageFilter :
    public ImageToImageFilter< TInputImage, TInputImage>
{
public:
  itkStaticConstMacro(InputImageDimension, unsigned int,
                      TInputImage::ImageDimension);
  itkStaticConstMacro(OutputImageDimension, unsigned int,
                      TInputImage::ImageDimension);

  typedef MinimumMaximumImageFilter                     Self;
  typedef ImageToImageFilter< TInputImage, TInputImage> Superclass;
  typedef SmartPointer<Self>                            Pointer;
  typedef SmartPointer<const Self>                      ConstPointer;

  typedef typename TInputImage::Pointer InputImagePointer;

  typedef typename TInputImage::RegionType RegionType;
  typedef typename TInputImage::SizeType   SizeType;
  typedef typename TInputImage::IndexType  IndexType;
  typedef typename TInputImage::PixelType  PixelType;

  typedef typename DataObject::Pointer DataObjectPointer;

  itkNewMacro(Self);

  itkTypeMacro(MinimumMaximumImageFilter, ImageToImageFilter);

  typedef TInputImage InputImageType;

  typedef SimpleDataObjectDecorator<PixelType> PixelObjectType;

  PixelType GetMinimum() const
    { return this->GetMinimumOutput()->Get(); }
  PixelObjectType* GetMinimumOutput();
  const PixelObjectType* GetMinimumOutput() const;

  PixelType GetMaximum() const
    { return this->GetMaximumOutput()->Get(); }
  PixelObjectType* GetMaximumOutput();
  const PixelObjectType* GetMaximumOutput() const;

  virtual DataObjectPointer MakeOutput(unsigned int idx);

#ifdef ITK_USE_CONCEPT_CHECKING

  itkConceptMacro(LessThanComparableCheck,
                  (Concept::LessThanComparable<PixelType>));
  itkConceptMacro(GreaterThanComparableCheck,
                  (Concept::GreaterThanComparable<PixelType>));
  itkConceptMacro(OStreamWritableCheck,
                  (Concept::OStreamWritable<PixelType>));

#endif

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

  void AllocateOutputs();

  void BeforeThreadedGenerateData ();

  void AfterThreadedGenerateData ();

  void  ThreadedGenerateData (const RegionType& 
                              outputRegionForThread,
                              int threadId);

  // Override since the filter needs all the data for the algorithm
  void GenerateInputRequestedRegion();

  // Override since the filter produces all of its output
  void EnlargeOutputRequestedRegion(DataObject *data);

private:
  MinimumMaximumImageFilter(const Self&); //purposely not implemented
  void operator=(const Self&); //purposely not implemented
  
  std::vector<PixelType> m_ThreadMin;
  std::vector<PixelType> m_ThreadMax;
};
  
} // end namespace itk

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkMinimumMaximumImageFilter.txx"
#endif

#endif

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