itkWarpImageFilter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkWarpImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2009-04-25 12:28:12 $
  Version:   $Revision: 1.30 $

  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 __itkWarpImageFilter_h
#define __itkWarpImageFilter_h
#include "itkImageBase.h"
#include "itkImageToImageFilter.h"
#include "itkInterpolateImageFunction.h"
#include "itkLinearInterpolateImageFunction.h"
#include "itkPoint.h"
#include "itkFixedArray.h"

namespace itk
{

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

  itkNewMacro(Self);

  itkTypeMacro( WarpImageFilter, ImageToImageFilter );

  typedef typename TOutputImage::RegionType OutputImageRegionType;

  typedef typename Superclass::InputImageType         InputImageType;
  typedef typename Superclass::InputImagePointer      InputImagePointer;
  typedef typename Superclass::OutputImageType        OutputImageType;
  typedef typename Superclass::OutputImagePointer     OutputImagePointer;
  typedef typename Superclass::InputImageConstPointer InputImageConstPointer;
  typedef typename OutputImageType::IndexType         IndexType;
  typedef typename OutputImageType::SizeType          SizeType;
  typedef typename OutputImageType::PixelType         PixelType;
  typedef typename OutputImageType::SpacingType       SpacingType;

  itkStaticConstMacro(ImageDimension, unsigned int,
                      TOutputImage::ImageDimension );
  itkStaticConstMacro(InputImageDimension, unsigned int,
                      TInputImage::ImageDimension );
  itkStaticConstMacro(DeformationFieldDimension, unsigned int,
                      TDeformationField::ImageDimension );

  typedef ImageBase<itkGetStaticConstMacro(ImageDimension)> ImageBaseType;

  typedef TDeformationField                        DeformationFieldType;
  typedef typename DeformationFieldType::Pointer   DeformationFieldPointer;
  typedef typename DeformationFieldType::PixelType DisplacementType;

  typedef double                                                CoordRepType;
  typedef InterpolateImageFunction<InputImageType,CoordRepType> InterpolatorType;
  typedef typename InterpolatorType::Pointer                    InterpolatorPointer;
  typedef LinearInterpolateImageFunction<InputImageType,CoordRepType>
                                                                DefaultInterpolatorType;

  typedef Point<CoordRepType,itkGetStaticConstMacro(ImageDimension)> PointType;

  typedef typename TOutputImage::DirectionType     DirectionType;

  void SetDeformationField( const DeformationFieldType * field );

  DeformationFieldType * GetDeformationField(void);

  itkSetObjectMacro( Interpolator, InterpolatorType );

  itkGetObjectMacro( Interpolator, InterpolatorType );

  itkSetMacro(OutputSpacing, SpacingType);
  virtual void SetOutputSpacing( const double* values);

  itkGetConstReferenceMacro(OutputSpacing, SpacingType);

  itkSetMacro(OutputOrigin, PointType);
  virtual void SetOutputOrigin( const double* values);

  itkGetConstReferenceMacro(OutputOrigin, PointType);

  itkSetMacro(OutputDirection, DirectionType );
  itkGetConstReferenceMacro(OutputDirection, DirectionType );

  void SetOutputParametersFromImage ( const ImageBaseType *image );

  itkSetMacro( OutputStartIndex, IndexType );

  itkGetConstReferenceMacro( OutputStartIndex, IndexType );

  itkSetMacro( OutputSize, SizeType );

  itkGetConstReferenceMacro( OutputSize, SizeType );

  itkSetMacro( EdgePaddingValue, PixelType );

  itkGetConstMacro( EdgePaddingValue, PixelType );

  virtual void GenerateOutputInformation();

  virtual void GenerateInputRequestedRegion();

  virtual void BeforeThreadedGenerateData();

  virtual void AfterThreadedGenerateData();

#ifdef ITK_USE_CONCEPT_CHECKING

  itkConceptMacro(SameDimensionCheck1,
    (Concept::SameDimension<ImageDimension, InputImageDimension>));
  itkConceptMacro(SameDimensionCheck2,
    (Concept::SameDimension<ImageDimension, DeformationFieldDimension>));
  itkConceptMacro(InputHasNumericTraitsCheck,
    (Concept::HasNumericTraits<typename TInputImage::PixelType>));
  itkConceptMacro(DeformationFieldHasNumericTraitsCheck,
    (Concept::HasNumericTraits<typename TDeformationField::PixelType::ValueType>));

#endif

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

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

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

  DisplacementType EvaluateDeformationAtPhysicalPoint(const PointType &p);

  PixelType                  m_EdgePaddingValue;
  SpacingType                m_OutputSpacing;
  PointType                  m_OutputOrigin;
  DirectionType              m_OutputDirection;

  InterpolatorPointer        m_Interpolator;
  SizeType                   m_OutputSize;        // Size of the output image
  IndexType                  m_OutputStartIndex;  // output image start index
  bool                       m_DefFieldSizeSame;
  // variables for deffield interpoator
  IndexType m_StartIndex,m_EndIndex;


};

} // end namespace itk

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

#endif

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