itkInverseDisplacementFieldImageFilter.h

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/*=========================================================================
 *
 *  Copyright Insight Software Consortium
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/
#ifndef itkInverseDisplacementFieldImageFilter_h
#define itkInverseDisplacementFieldImageFilter_h

#include "itkImageToImageFilter.h"
#include "itkKernelTransform.h"
#include "itkImageRegionConstIteratorWithIndex.h"

namespace itk
{
template< typename TInputImage, typename TOutputImage >
class InverseDisplacementFieldImageFilter:
  public ImageToImageFilter< TInputImage, TOutputImage >
{
public:
  typedef InverseDisplacementFieldImageFilter             Self;
  typedef ImageToImageFilter< TInputImage, TOutputImage > Superclass;
  typedef SmartPointer< Self >                            Pointer;
  typedef SmartPointer< const Self >                      ConstPointer;

  typedef TInputImage                           InputImageType;
  typedef typename InputImageType::Pointer      InputImagePointer;
  typedef typename InputImageType::ConstPointer InputImageConstPointer;
  typedef typename InputImageType::RegionType   InputImageRegionType;
  typedef TOutputImage                          OutputImageType;
  typedef typename OutputImageType::Pointer     OutputImagePointer;

  itkNewMacro(Self);

  itkTypeMacro(InverseDisplacementFieldImageFilter, ImageToImageFilter);

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

  typedef KernelTransform<
    double, itkGetStaticConstMacro(ImageDimension) > KernelTransformType;
  typedef typename KernelTransformType::Pointer KernelTransformPointerType;

  typedef typename OutputImageType::SizeType SizeType;

  typedef typename OutputImageType::IndexType IndexType;

  typedef typename TOutputImage::PixelType    OutputPixelType;
  typedef typename OutputPixelType::ValueType OutputPixelComponentType;

  typedef typename TOutputImage::RegionType OutputImageRegionType;

  typedef typename TOutputImage::SpacingType SpacingType;
  typedef typename TOutputImage::PointType   OriginPointType;

  itkSetObjectMacro(KernelTransform, KernelTransformType);
  itkGetModifiableObjectMacro(KernelTransform, KernelTransformType);

  itkSetMacro(Size, SizeType);

  itkGetConstReferenceMacro(Size, SizeType);

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

  itkGetConstReferenceMacro(OutputSpacing, SpacingType);

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

  itkGetConstReferenceMacro(OutputOrigin, OriginPointType);

  itkSetMacro(SubsamplingFactor, unsigned int);
  itkGetConstMacro(SubsamplingFactor, unsigned int);

  virtual void GenerateOutputInformation() ITK_OVERRIDE;

  virtual void GenerateInputRequestedRegion() ITK_OVERRIDE;

  ModifiedTimeType GetMTime(void) const ITK_OVERRIDE;

#ifdef ITK_USE_CONCEPT_CHECKING
  // Begin concept checking
  itkConceptMacro( OutputHasNumericTraitsCheck,
                   ( Concept::HasNumericTraits< OutputPixelComponentType > ) );
  // End concept checking
#endif

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

  void GenerateData() ITK_OVERRIDE;

  void PrepareKernelBaseSpline();

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

  SizeType                   m_Size;                 // Size of the output image
  KernelTransformPointerType m_KernelTransform;      // Coordinate transform to
                                                     // use
  SpacingType     m_OutputSpacing;                   // output image spacing
  OriginPointType m_OutputOrigin;                    // output image origin

  unsigned int m_SubsamplingFactor;                  // factor to subsample the
                                                     // input field.
};
} // end namespace itk

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkInverseDisplacementFieldImageFilter.hxx"
#endif

#endif