otbImageToSURFKeyPointSetFilter.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 otbImageToSURFKeyPointSetFilter_h
#define otbImageToSURFKeyPointSetFilter_h
 
#include "itkConstNeighborhoodIterator.h"
#include "otbImageToHessianDeterminantImageFilter.h"
#include "itkPointSet.h"
#include <itkRescaleIntensityImageFilter.h>
#include <otbImageList.h>
#include "itkResampleImageFilter.h"
#include "otbImageToPointSetFilter.h"
#include "itkVector.h"
 
namespace otb
{
 
template <class TInputImage, class TOutputPointSet>
class ITK_EXPORT ImageToSURFKeyPointSetFilter : public ImageToPointSetFilter<TInputImage, TOutputPointSet>
{
 
public:
  typedef ImageToSURFKeyPointSetFilter Self;
  typedef ImageToPointSetFilter<TInputImage, TOutputPointSet> Superclass;
  typedef itk::SmartPointer<Self>       Pointer;
  typedef itk::SmartPointer<const Self> ConstPointer;
 
  itkNewMacro(Self);
 
  itkTypeMacro(ImageToSURFKeyPointSetFilter, ImageToPointSetFilter);
 
  typedef TInputImage                          InputImageType;
  typedef typename InputImageType::Pointer     InputImagePointerType;
  typedef typename InputImageType::IndexType   PixelIndex;
  typedef typename InputImageType::IndexType   IndexType;
  typedef typename InputImageType::PixelType   PixelValue;
  typedef typename InputImageType::SpacingType SpacingType;
  typedef typename InputImageType::SizeType    SizeType;
  typedef typename InputImageType::PointType   PointImageType;
 
  typedef TOutputPointSet                           OutputPointSetType;
  typedef typename TOutputPointSet::Pointer         OutputPointSetPointerType;
  typedef typename TOutputPointSet::PixelType       OutputPixelType;
  typedef typename TOutputPointSet::PointType       OutputPointType;
  typedef typename TOutputPointSet::PointIdentifier OutputPointIdentifierType;
 
  itkSetMacro(OctavesNumber, int);
  itkGetMacro(OctavesNumber, int);
 
  itkSetMacro(ScalesNumber, int);
  itkGetMacro(ScalesNumber, int);
 
  itkGetMacro(NumberOfPoints, int);
 
  typedef itk::ConstNeighborhoodIterator<InputImageType>      NeighborhoodIteratorType;
  typedef typename NeighborhoodIteratorType::NeighborhoodType NeighborhoodType;
  typedef typename NeighborhoodType::OffsetType               OffsetType;
 
  typedef otb::ImageToHessianDeterminantImageFilter<InputImageType, InputImageType> ImageToDetHessianImageType;
  typedef typename ImageToDetHessianImageType::Pointer DetHessianPointerFilter;
 
  typedef itk::ResampleImageFilter<InputImageType, InputImageType> ResampleFilterType;
  typedef typename ResampleFilterType::Pointer ResampleFilterPointerType;
 
  typedef otb::ImageList<InputImageType>  ImageListType;
  typedef typename ImageListType::Pointer ImageListTypePointer;
 
  typedef std::vector<double> VectorType;
  typedef itk::Vector<PixelValue, 3> VectorPointType;
 
protected:
  ImageToSURFKeyPointSetFilter();
 
  ~ImageToSURFKeyPointSetFilter() override;
 
  void PrintSelf(std::ostream& os, itk::Indent indent) const override;
 
  void GenerateData() override;
 
  virtual bool IsLocalExtremum(const NeighborhoodType& neigh);
 
  virtual bool IsLocalExtremumAround(const NeighborhoodType& neigh, double CenterValue);
 
  bool RefineLocationKeyPoint(const NeighborhoodIteratorType& currentScale, const NeighborhoodIteratorType& previousScale,
                              const NeighborhoodIteratorType& nextScale, VectorPointType& solution);
 
  virtual double AssignOrientation(const NeighborhoodType& neigh, double S);
 
  virtual VectorType ComputeDescriptor(const NeighborhoodType& neigh, double O, double S);
 
  virtual int GetMin(int a, int b, int c);
 
private:
  ImageToSURFKeyPointSetFilter(const Self&) = delete;
  void operator=(const Self&) = delete;
 
  int m_OctavesNumber;
 
  int m_ScalesNumber;
 
  int m_NumberOfPoints;
 
  double m_DoHThreshold;
 
  InputImagePointerType m_determinantImage;
  InputImagePointerType m_ImageCurrent;
  InputImagePointerType m_ImageMovedPrev;
  InputImagePointerType m_ImageMovedNext;
 
  DetHessianPointerFilter m_DetHessianFilter;
 
  /*Resample Filter*/
  ResampleFilterPointerType m_ResampleFilter;
 
  ImageListTypePointer m_ImageList;
 
  unsigned int m_DifferentSamplePoints;
 
  OffsetType m_Offsets[8];
};
}
#ifndef OTB_MANUAL_INSTANTIATION
#include "otbImageToSURFKeyPointSetFilter.hxx"
#endif
 
#endif