itkMultiResolutionPyramidImageFilter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkMultiResolutionPyramidImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2002/09/30 15:24:40 $
  Version:   $Revision: 1.13 $

  Copyright (c) 2002 Insight 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 __itkMultiResolutionPyramidImageFilter_h
#define __itkMultiResolutionPyramidImageFilter_h

#include "itkImageToImageFilter.h"
#include "itkArray2D.h"

namespace itk
{

template <
class TInputImage, 
class TOutputImage
>
class ITK_EXPORT MultiResolutionPyramidImageFilter : 
  public ImageToImageFilter< TInputImage, TOutputImage >
{
public:
  typedef MultiResolutionPyramidImageFilter  Self;
  typedef ImageToImageFilter<TInputImage,TOutputImage>  Superclass;
  typedef SmartPointer<Self>  Pointer;
  typedef SmartPointer<const Self>  ConstPointer;

  itkNewMacro(Self);

  itkTypeMacro(MultiResolutionPyramidImageFilter, ImageToImageFilter);

  typedef Array2D<unsigned int>  ScheduleType;

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

  typedef typename Superclass::InputImageType InputImageType;
  typedef typename Superclass::OutputImageType OutputImageType;
  typedef typename Superclass::InputImagePointer InputImagePointer;
  typedef typename Superclass::OutputImagePointer OutputImagePointer;
  typedef typename Superclass::InputImageConstPointer InputImageConstPointer;

  void SetNumberOfLevels(unsigned int num);

  itkGetMacro(NumberOfLevels, unsigned int);

  void SetSchedule( const ScheduleType& schedule );

  itkGetConstReferenceMacro(Schedule, ScheduleType);

  void SetStartingShrinkFactors( unsigned int factor );
  void SetStartingShrinkFactors( unsigned int* factors );

  const unsigned int * GetStartingShrinkFactors() const;

  static bool IsScheduleDownwardDivisible( const ScheduleType& schedule );

  virtual void GenerateOutputInformation();

  virtual void GenerateOutputRequestedRegion(DataObject *output);

  virtual void GenerateInputRequestedRegion();

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

  void GenerateData();

  double          m_MaximumError; 
  unsigned int    m_NumberOfLevels;
  ScheduleType    m_Schedule;

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


} // namespace itk

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

#endif

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