itkDifferenceOfGaussiansGradientImageFilter.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 itkDifferenceOfGaussiansGradientImageFilter_h
#define itkDifferenceOfGaussiansGradientImageFilter_h
 
#include "itkImageToImageFilter.h"
#include "itkCovariantVector.h"
 
namespace itk
{
template <typename TInputImage, typename TDataType>
class ITK_TEMPLATE_EXPORT DifferenceOfGaussiansGradientImageFilter
  : public ImageToImageFilter<
      TInputImage,
      Image<CovariantVector<TDataType, TInputImage::ImageDimension>, TInputImage::ImageDimension>>
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(DifferenceOfGaussiansGradientImageFilter);

  static constexpr unsigned int NDimensions = TInputImage::ImageDimension;

  using Self = DifferenceOfGaussiansGradientImageFilter;

  using TOutputImage = Image<CovariantVector<TDataType, Self::NDimensions>, Self::NDimensions>;

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

  itkNewMacro(Self);

  itkOverrideGetNameOfClassMacro(DifferenceOfGaussiansGradientImageFilter);

  using SizeType = Size<Self::NDimensions>;

  using IndexType = typename TInputImage::IndexType;

  using PixelType = typename TInputImage::PixelType;

  using OutputImageRegionType = typename TInputImage::RegionType;

  itkGetConstMacro(Width, unsigned int);
  itkSetMacro(Width, unsigned int);
 
  itkConceptMacro(DataTypeHasNumericTraitsCheck, (Concept::HasNumericTraits<TDataType>));
 
protected:
  DifferenceOfGaussiansGradientImageFilter();
  ~DifferenceOfGaussiansGradientImageFilter() override = default;
  void
  PrintSelf(std::ostream & os, Indent indent) const override;

  void
  GenerateData() override;
 
private:
  unsigned int m_Width{};
};
} // end namespace itk
 
#ifndef ITK_MANUAL_INSTANTIATION
#  include "itkDifferenceOfGaussiansGradientImageFilter.hxx"
#endif
 
#endif