otbGreyLevelCooccurrenceIndexedList.h

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/*
 * Copyright (C) 2005-2022 Centre National d'Etudes Spatiales (CNES)
 *
 * This file is part of Orfeo Toolbox
 *
 *     https://www.orfeo-toolbox.org/
 *
 * 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
 *
 * 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 otbGreyLevelCooccurrenceIndexedList_h
#define otbGreyLevelCooccurrenceIndexedList_h
 
#include "itkNumericTraits.h"
#include "itkObjectFactory.h"
#include "itkLightObject.h"
#include "itkArray.h"
#include "itkIndex.h"
#include "itkSize.h"
#include <utility>
#include <vector>
 
namespace otb
{
template <class TPixel>
class ITK_EXPORT GreyLevelCooccurrenceIndexedList : public itk::LightObject
{
public:
  typedef GreyLevelCooccurrenceIndexedList Self;
  typedef itk::LightObject                 Superclass;
  typedef itk::SmartPointer<Self>          Pointer;
  typedef itk::SmartPointer<const Self>    ConstPointer;
 
  itkNewMacro(Self);
 
  itkTypeMacro(GreyLevelCooccurrenceIndexedList, itk::LightObject);
 
  typedef TPixel PixelType;
 
  itkStaticConstMacro(PixelPairSize, unsigned int, 2);
 
  typedef itk::Index<PixelPairSize>    IndexType;
  typedef itk::Size<PixelPairSize>     SizeType;
  typedef typename itk::IndexValueType IndexValueType;
 
  typedef typename itk::IdentifierType                               InstanceIdentifier;
  typedef InstanceIdentifier                                         FrequencyType;
  typedef typename itk::NumericTraits<FrequencyType>::RealType       RelativeFrequencyType;
  typedef typename itk::NumericTraits<FrequencyType>::AccumulateType TotalFrequencyType;
 
  typedef typename itk::NumericTraits<PixelType>::RealType PixelValueType;
  typedef itk::FixedArray<PixelValueType, PixelPairSize> PixelPairType;
  // lower bound of each bin
  std::vector<std::vector<PixelValueType>> m_Min;
  // upper bound of each bin
  std::vector<std::vector<PixelValueType>> m_Max;
 
  /* std::pair to hold pixel pair and its frequency count */
  typedef std::pair<IndexType, FrequencyType> CooccurrencePairType;
 
  typedef itk::Array<int> LookupArrayType;
 
  typedef std::vector<CooccurrencePairType> VectorType;
 
  itkGetMacro(TotalFrequency, TotalFrequencyType);
 
  itkGetMacro(Symmetry, bool);
 
  VectorType GetVector();
 
  void Initialize(const unsigned int nbins, const PixelValueType min, const PixelValueType max, const bool symmetry = true);
 
  // check if both pixel values fall between m_InputImageMinimum and
  // m_InputImageMaximum. If so add to m_Vector via AddPairToVector method */
  void AddPixelPair(const PixelValueType& pixelvalue1, const PixelValueType& pixelvalue2);
 
  /* Get the frequency value from Vector with index =[j,i] */
  RelativeFrequencyType GetFrequency(IndexValueType i, IndexValueType j);
 
  /* Get the frequency value from Vector with index =[j,i] from given
   * vector. This is used if we have a copy of m_Vector normalized. */
  RelativeFrequencyType GetFrequency(IndexValueType i, IndexValueType j, const VectorType& vect) const;
 
protected:
  GreyLevelCooccurrenceIndexedList();
  ~GreyLevelCooccurrenceIndexedList() override = default;
 
  void AddPairToVector(IndexType index);
 
  void SetBinMin(const unsigned int dimension, const InstanceIdentifier nbin, PixelValueType min);
 
  void SetBinMax(const unsigned int dimension, const InstanceIdentifier nbin, PixelValueType max);
 
  bool GetIndex(const PixelPairType& pixelPair, IndexType& index) const;
 
  void PrintSelf(std::ostream& os, itk::Indent indent) const override;
 
private:
  GreyLevelCooccurrenceIndexedList(const Self&) = delete;
  void operator=(const Self&) = delete;
 
  LookupArrayType m_LookupArray;
 
  /* std::vector holding actual co-occurrence pairs */
  VectorType m_Vector;
 
  /* Size instance */
  SizeType m_Size;
 
  bool m_Symmetry;
 
  /* Store the total frequency of co-occurrence pairs in GreyLevelCooccureneIndexedList class */
  TotalFrequencyType m_TotalFrequency;
 
  bool m_ClipBinsAtEnds;
 
  PixelValueType m_InputImageMinimum;
 
  PixelValueType m_InputImageMaximum;
};
 
} // End namespace otb
 
#ifndef OTB_MANUAL_INSTANTIATION
#include "otbGreyLevelCooccurrenceIndexedList.hxx"
#endif
 
#endif