itkMinimumImageFunction.h

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

  NifTK: A software platform for medical image computing.

  Copyright (c) University College London (UCL). All rights reserved.

  This software is distributed WITHOUT ANY WARRANTY; without even
  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  PURPOSE.

  See LICENSE.txt in the top level directory for details.

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

#ifndef __itkMinimumImageFunction_h
#define __itkMinimumImageFunction_h

#include "itkImageFunction.h"
#include "itkNumericTraits.h"

namespace itk
{
template< class TInputImage, class TCoordRep = float >
class ITK_EXPORT MinimumImageFunction:
  public ImageFunction< TInputImage,
                        typename NumericTraits< typename TInputImage::PixelType >::RealType,
                        TCoordRep >
{
public:
  typedef MinimumImageFunction Self;
  typedef ImageFunction< TInputImage,
                         typename NumericTraits< typename TInputImage::PixelType >::RealType,
                         TCoordRep >                     Superclass;

  typedef SmartPointer< Self >       Pointer;
  typedef SmartPointer< const Self > ConstPointer;

  itkTypeMacro(MinimumImageFunction, ImageFunction);

  itkNewMacro(Self);

  typedef TInputImage InputImageType;

  typedef typename Superclass::OutputType OutputType;

  typedef typename Superclass::IndexType IndexType;

  typedef typename Superclass::ContinuousIndexType ContinuousIndexType;

  typedef typename Superclass::PointType PointType;

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

  typedef typename NumericTraits< typename InputImageType::PixelType >::RealType
  RealType;

  virtual RealType EvaluateAtIndex(const IndexType & index) const;

  virtual RealType Evaluate(const PointType & point) const
  {
    IndexType index;

    this->ConvertPointToNearestIndex(point, index);
    return this->EvaluateAtIndex(index);
  }

  virtual RealType EvaluateAtContinuousIndex(
    const ContinuousIndexType & cindex) const
  {
    IndexType index;

    this->ConvertContinuousIndexToNearestIndex(cindex, index);
    return this->EvaluateAtIndex(index);
  }

  itkSetMacro(NeighborhoodRadius, unsigned int);
  itkGetConstReferenceMacro(NeighborhoodRadius, unsigned int);

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

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

  unsigned int m_NeighborhoodRadius;
};
} // end namespace itk

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

#endif