itkBSplineDownsampleImageFilter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkBSplineDownsampleImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2006-03-16 13:35:01 $
  Version:   $Revision: 1.4 $

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

  Portions of this code are covered under the VTK copyright.
  See VTKCopyright.txt or http://www.kitware.com/VTKCopyright.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 __itkBSplineDownsampleImageFilter_h
#define __itkBSplineDownsampleImageFilter_h

// include .h for each ResamplerType
#include "itkBSplineResampleImageFilterBase.h"
#include "itkBSplineL2ResampleImageFilterBase.h"
#include "itkBSplineCenteredResampleImageFilterBase.h"
#include "itkBSplineCenteredL2ResampleImageFilterBase.h"

namespace itk
{
//= ITK_TYPENAME BSplineResampleImageFilterBase<TInputImage, TOutputImage>
template <class TInputImage, class TOutputImage, 
          class ResamplerType = BSplineResampleImageFilterBase<TInputImage, TOutputImage> >
class ITK_EXPORT BSplineDownsampleImageFilter : 
    public ResamplerType
{
public:
  typedef BSplineDownsampleImageFilter       Self;
  typedef ResamplerType                      Superclass;
  typedef SmartPointer<Self>                 Pointer;
  typedef SmartPointer<const Self>           ConstPointer;

  itkTypeMacro(BSplineDownsampleImageFilter, ResamplerType);

 
  itkNewMacro( Self );

  typedef typename Superclass::InputImageType InputImageType;

  typedef typename Superclass::InputImagePointer InputImagePointer;

  typedef typename Superclass::OutputImagePointer OutputImagePointer;

  typedef typename Superclass::OutputImageIterator OutputImageIterator;

  void GenerateOutputInformation();

  void GenerateInputRequestedRegion();

#ifdef ITK_USE_CONCEPT_CHECKING

  itkConceptMacro(DoubleConvertibleToOutputCheck,
    (Concept::Convertible<double, typename TOutputImage::PixelType>));

#endif

protected:

  void GenerateData();
  void EnlargeOutputRequestedRegion( DataObject *output );

  BSplineDownsampleImageFilter();
  virtual ~BSplineDownsampleImageFilter() {};
    
private:
  BSplineDownsampleImageFilter( const Self& ); //purposely not implemented
  void operator=( const Self& ); //purposely not implemented
  
};

} // namespace itk

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

#endif