otbSFSTexturesImageFilter.h

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/*=========================================================================

  Program:   ORFEO Toolbox
  Language:  C++
  Date:      $Date$
  Version:   $Revision$


  Copyright (c) Centre National d'Etudes Spatiales. All rights reserved.
  See OTBCopyright.txt for details.


     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notices for more information.

=========================================================================*/
#ifndef __otbSFSTexturesImageFilter_h
#define __otbSFSTexturesImageFilter_h

#include "otbSFSTexturesFunctor.h"
#include "itkImageToImageFilter.h"
#include "itkImageRegionIteratorWithIndex.h"
#include "itkConstNeighborhoodIterator.h"

namespace otb
{

template <class TInputImage, class TOutputImage>
class ITK_EXPORT SFSTexturesImageFilter :
  public itk::ImageToImageFilter<TInputImage, TOutputImage>
{
public:
  typedef SFSTexturesImageFilter                             Self;
  typedef TInputImage                                        InputImageType;
  typedef TOutputImage                                       OutputImageType;
  typedef itk::ImageToImageFilter<TInputImage, TOutputImage> Superclass;
  typedef itk::SmartPointer<Self>                            Pointer;
  typedef itk::SmartPointer<const Self>                      ConstPointer;

  itkNewMacro(Self);

  itkTypeMacro(UnaryFunctorNeighborhoodImageFilter, ImageToImageFilter);

  typedef typename InputImageType::ConstPointer                                       InputImagePointerType;
  typedef typename InputImageType::RegionType                                         InputImageRegionType;
  typedef typename InputImageType::PixelType                                          InputImagePixelType;
  typedef typename InputImageType::SizeType                                           InputImageSizeType;
  typedef typename OutputImageType::Pointer                                           OutputImagePointerType;
  typedef typename OutputImageType::RegionType                                        OutputImageRegionType;
  typedef typename OutputImageType::PixelType                                         OutputImagePixelType;
  typedef itk::ConstNeighborhoodIterator<TInputImage>                                 NeighborhoodIteratorType;
  typedef typename NeighborhoodIteratorType::RadiusType                               RadiusType;
  typedef Functor::SFSTexturesFunctor<NeighborhoodIteratorType, OutputImagePixelType> FunctorType;
  typedef typename FunctorType::OutputType                                            FunctorOutputType;
  typedef itk::ProcessObject                                                          ProcessObjectType;

  itkGetMacro(Radius, unsigned int);

  FunctorType& GetFunctor()
  {
    return m_Functor;
  }

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

  void SetSpatialThreshold(unsigned int thresh)
  {
    this->GetFunctor().SetSpatialThreshold(thresh);
    m_Radius = thresh;
    this->Modified();
  }
  unsigned int GetSpatialThreshold()
  {
    return this->GetFunctor().GetSpatialThreshold();
  }
  void SetSpectralThreshold(InputImagePixelType thresh)
  {
    this->GetFunctor().SetSpectralThreshold(thresh);
  }
  InputImagePixelType GetSpectralThreshold()
  {
    return this->GetFunctor().GetSpectralThreshold();
  }
  void SetRatioMaxConsiderationNumber(unsigned int value)
  {
    this->GetFunctor().SetRatioMaxConsiderationNumber(value);
  }
  unsigned int GetRatioMaxConsiderationNumber()
  {
    return this->GetFunctor().GetRatioMaxConsiderationNumber();
  }

  void SetAlpha(double alpha)
  {
    this->GetFunctor().SetAlpha(alpha);
  }
  double GetAlpha()
  {
    return this->GetFunctor().GetAlpha();
  }

  void SetNumberOfDirections(unsigned int D)
  {
    this->GetFunctor().SetNumberOfDirections(D);
    double step = CONST_2PI / static_cast<double>(D);
    this->GetFunctor().SetDirectionStep(step);
  }
  unsigned int GetNumberOfDirections()
  {
    return this->GetFunctor().GetNumberOfDirections();
  }

  typedef enum {LENGTH = 1, WIDTH, PSI, WMEAN, RATIO, SD} FeatureType;

  void SetFeatureStatus(FeatureType id, bool isSelected)
  {
    if (static_cast<unsigned int>(id) > this->GetTexturesStatus().size() || id == 0)
      {
      itkExceptionMacro(
        << "Invalid texture index " << id << ", must be in [1;" << this->GetTexturesStatus().size() << "]");
      }
    else
      {
      this->GetFunctor().SetTextureStatus(id - 1, isSelected);
      }
  }

  std::vector<bool> GetTexturesStatus()
  {
    return this->GetFunctor().GetTexturesStatus();
  }

  void InitFeatureStatus(bool status);

  const OutputImageType * GetLengthOutput() const;
  OutputImageType * GetLengthOutput();

  const OutputImageType * GetWidthOutput() const;
  OutputImageType * GetWidthOutput();

  const OutputImageType * GetPSIOutput() const;
  OutputImageType * GetPSIOutput();

  const OutputImageType * GetWMeanOutput() const;
  OutputImageType * GetWMeanOutput();

  const OutputImageType * GetRatioOutput() const;
  OutputImageType * GetRatioOutput();

  const OutputImageType * GetSDOutput() const;
  OutputImageType * GetSDOutput();

  virtual void GenerateOutputInformation();
  std::vector<FunctorType> m_FunctorList;

protected:
  SFSTexturesImageFilter();
  virtual ~SFSTexturesImageFilter(){}
  void PrintSelf(std::ostream& os, itk::Indent indent) const;

  virtual void BeforeThreadedGenerateData();
  virtual void ThreadedGenerateData(const OutputImageRegionType& outputRegionForThread, int threadId);
  virtual void GenerateInputRequestedRegion(void);

private:
  SFSTexturesImageFilter(const Self &); //purposely not implemented
  void operator =(const Self&); //purposely not implemented

  unsigned int m_Radius;
  FunctorType  m_Functor;

};

} // end namespace otb

#ifndef OTB_MANUAL_INSTANTIATION
#include "otbSFSTexturesImageFilter.txx"
#endif

#endif