itkImageClassifierBase.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 itkImageClassifierBase_h
#define itkImageClassifierBase_h
 
#include "itkClassifierBase.h"
#include "itkMacro.h"
#include "itkImageRegionIterator.h"
 
namespace itk
{
 
template <typename TInputImage, typename TClassifiedImage>
class ITK_TEMPLATE_EXPORT ImageClassifierBase : public ClassifierBase<TInputImage>
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(ImageClassifierBase);

  using Self = ImageClassifierBase;
  using Superclass = ClassifierBase<TInputImage>;
  using Pointer = SmartPointer<Self>;
  using ConstPointer = SmartPointer<const Self>;

  itkNewMacro(Self);

  itkOverrideGetNameOfClassMacro(ImageClassifierBase);

  using InputImageType = TInputImage;
  using InputImagePointer = typename TInputImage::Pointer;
  using InputImageConstPointer = typename TInputImage::ConstPointer;

  using ClassifiedImagePointer = typename TClassifiedImage::Pointer;


  using typename Superclass::MeasurementVectorType;

  using typename Superclass::MembershipFunctionType;
 
  using typename Superclass::MembershipFunctionPointer;
 
  using typename Superclass::MembershipFunctionPointerVector;

  using typename Superclass::DecisionRuleType;

  itkSetConstObjectMacro(InputImage, InputImageType);
  itkGetConstObjectMacro(InputImage, InputImageType);
  itkSetMacro(ClassifiedImage, ClassifiedImagePointer);

  itkGetConstMacro(ClassifiedImage, ClassifiedImagePointer);

  using InputImagePixelType = typename TInputImage::PixelType;

  using ClassifiedImagePixelType = typename TClassifiedImage::PixelType;

  using InputImageConstIterator = ImageRegionConstIterator<TInputImage>;
  using ClassifiedImageIterator = ImageRegionIterator<TClassifiedImage>;

  std::vector<double>
  GetPixelMembershipValue(const InputImagePixelType inputImagePixel);
 
protected:
  ImageClassifierBase() = default;
  ~ImageClassifierBase() override = default;
  void
  PrintSelf(std::ostream & os, Indent indent) const override;

  void
  Allocate();

  void
  GenerateData() override;
 
private:
  using InputImageSizeType = typename TInputImage::SizeType;
 
  InputImageConstPointer m_InputImage{};
  ClassifiedImagePointer m_ClassifiedImage{};

  virtual void
  Classify();
}; // class ImageClassifierBase
} // namespace itk
 
#ifndef ITK_MANUAL_INSTANTIATION
#  include "itkImageClassifierBase.hxx"
#endif
 
#endif