itkExpandImageFilter.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 itkExpandImageFilter_h
#define itkExpandImageFilter_h
 
#include "itkImageToImageFilter.h"
#include "itkLinearInterpolateImageFunction.h"
 
namespace itk
{
template <typename TInputImage, typename TOutputImage>
class ITK_TEMPLATE_EXPORT ExpandImageFilter : public ImageToImageFilter<TInputImage, TOutputImage>
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(ExpandImageFilter);

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

  itkNewMacro(Self);

  itkOverrideGetNameOfClassMacro(ExpandImageFilter);

  using OutputImageRegionType = typename TOutputImage::RegionType;

  static constexpr unsigned int ImageDimension = TInputImage::ImageDimension;

  using typename Superclass::InputImageType;
  using typename Superclass::OutputImageType;
  using OutputPixelType = typename OutputImageType::PixelType;
  using InputImagePointer = typename InputImageType::Pointer;
  using OutputImagePointer = typename OutputImageType::Pointer;

  using CoordinateType = double;
#ifndef ITK_FUTURE_LEGACY_REMOVE
  using CoordRepType ITK_FUTURE_DEPRECATED(
    "ITK 6 discourages using `CoordRepType`. Please use `CoordinateType` instead!") = CoordinateType;
#endif
  using InterpolatorType = InterpolateImageFunction<InputImageType, CoordinateType>;
  using InterpolatorPointer = typename InterpolatorType::Pointer;
  using DefaultInterpolatorType = LinearInterpolateImageFunction<InputImageType, CoordinateType>;

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

  using ExpandFactorsType = FixedArray<unsigned int, ImageDimension>;

  itkSetMacro(ExpandFactors, ExpandFactorsType);
  virtual void
  SetExpandFactors(const unsigned int factor);

  itkGetConstReferenceMacro(ExpandFactors, ExpandFactorsType);
 

  void
  GenerateOutputInformation() override;

  void
  GenerateInputRequestedRegion() override;
 
protected:
  ExpandImageFilter();
  ~ExpandImageFilter() override = default;
  void
  PrintSelf(std::ostream & os, Indent indent) const override;

 
  void
  DynamicThreadedGenerateData(const OutputImageRegionType & outputRegionForThread) override;
 

  void
  BeforeThreadedGenerateData() override;
 
private:
  ExpandFactorsType   m_ExpandFactors{};
  InterpolatorPointer m_Interpolator{};
};
} // end namespace itk
 
#ifndef ITK_MANUAL_INSTANTIATION
#  include "itkExpandImageFilter.hxx"
#endif
 
#endif