itkHistogramToImageFilter.h

Go to the documentation of this file.

/*=========================================================================
 *
 *  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 itkHistogramToImageFilter_h
#define itkHistogramToImageFilter_h

#include "itkImageSource.h"
#include "itkConceptChecking.h"
#include "itkHistogram.h"
#include "itkImageRegionIteratorWithIndex.h"
#include "itkSimpleDataObjectDecorator.h"

namespace itk
{
template< typename THistogram, typename TImage, typename TFunction >
class ITK_TEMPLATE_EXPORT HistogramToImageFilter:
  public ImageSource< TImage >
{
public:
  ITK_DISALLOW_COPY_AND_ASSIGN(HistogramToImageFilter);

  using FunctorType = TFunction;
  using Self = HistogramToImageFilter;
  using Superclass = ImageSource< TImage >;
  using Pointer = SmartPointer< Self >;
  using ConstPointer = SmartPointer< const Self >;

  using OutputImageType = TImage;
  using OutputImagePointer = typename Superclass::Pointer;
  using SpacingType = typename OutputImageType::SpacingType;
  using PointType = typename OutputImageType::PointType;
  using OutputPixelType = typename OutputImageType::PixelType;

  // Define an iterator to iterate through the image
  using ImageIteratorType = itk::ImageRegionIteratorWithIndex< OutputImageType >;

  itkNewMacro(Self);

  itkTypeMacro(HistogramToImageFilter, ImageSource);

  using OutputImageRegionType = typename Superclass::OutputImageRegionType;

  using HistogramType = THistogram;
  using MeasurementVectorType = typename HistogramType::MeasurementVectorType;
  using HistogramSizeType = typename HistogramType::SizeType;
  using SizeType = typename OutputImageType::SizeType;

  static constexpr unsigned int ImageDimension = OutputImageType::ImageDimension;

  using Superclass::SetInput;
  virtual void SetInput(const HistogramType *histogram);

  const HistogramType * GetInput();

  void SetFunctor(const FunctorType & functor)
  {
    m_Functor = functor;
    this->Modified();
  }

  FunctorType & GetFunctor() { return m_Functor; }
  const FunctorType & GetFunctor() const { return m_Functor; }

  void SetTotalFrequency(SizeValueType n);

protected:
  HistogramToImageFilter();
  ~HistogramToImageFilter() override = default;

  void GenerateOutputInformation() override;

  void GenerateData() override;

  FunctorType m_Functor;

  void PrintSelf(std::ostream & os, Indent indent) const override;
};
} // end namespace itk

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

#endif