itkInterpolateImageFilter.h

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/*=========================================================================
 *
 *  Copyright NumFOCUS
 *
 *  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
 *
 *         https://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 itkInterpolateImageFilter_h
#define itkInterpolateImageFilter_h
 
#include "itkImageToImageFilter.h"
#include "itkLinearInterpolateImageFunction.h"
 
namespace itk
{
template <typename TInputImage, typename TOutputImage>
class ITK_TEMPLATE_EXPORT InterpolateImageFilter : public ImageToImageFilter<TInputImage, TOutputImage>
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(InterpolateImageFilter);

  using Self = InterpolateImageFilter;
  using Superclass = ImageToImageFilter<TInputImage, TOutputImage>;
  using Pointer = SmartPointer<Self>;
  using ConstPointer = SmartPointer<const Self>;

  itkNewMacro(Self);

  itkOverrideGetNameOfClassMacro(InterpolateImageFilter);

  using typename Superclass::InputImageType;
  using typename Superclass::InputImagePointer;
  using typename Superclass::OutputImageType;
  using typename Superclass::OutputImagePointer;
  using typename Superclass::OutputImageRegionType;

  static constexpr unsigned int ImageDimension = TOutputImage::ImageDimension;
  static constexpr unsigned int IntermediateImageDimension = TOutputImage::ImageDimension + 1;

  using InputPixelType = typename TInputImage::PixelType;
  using IntermediateImageType = Image<InputPixelType, Self::IntermediateImageDimension>;
  using InterpolatorType = InterpolateImageFunction<IntermediateImageType>;

  void
  SetInput1(const InputImageType * image)
  {
    this->SetInput(image);
  }
  const InputImageType *
  GetInput1()
  {
    return this->GetInput();
  }


  void
  SetInput2(const InputImageType * image);
 
  const InputImageType *
  GetInput2();

  itkSetClampMacro(Distance, double, 0.0, 1.0);
  itkGetConstMacro(Distance, double);

  itkSetObjectMacro(Interpolator, InterpolatorType);
  itkGetModifiableObjectMacro(Interpolator, InterpolatorType);

  void
  BeforeThreadedGenerateData() override;

  void
  AfterThreadedGenerateData() override;
 
  itkConceptMacro(InputHasNumericTraitsCheck, (Concept::HasNumericTraits<InputPixelType>));
 
protected:
  InterpolateImageFilter();
  ~InterpolateImageFilter() override = default;
  void
  PrintSelf(std::ostream & os, Indent indent) const override;

  void
  DynamicThreadedGenerateData(const OutputImageRegionType & outputRegionForThread) override;
 
 
private:
  typename InterpolatorType::Pointer m_Interpolator{};
 
  typename IntermediateImageType::Pointer m_IntermediateImage{};
 
  double m_Distance{};
};
} // end namespace itk
 
#ifndef ITK_MANUAL_INSTANTIATION
#  include "itkInterpolateImageFilter.hxx"
#endif
 
#endif