otbPrintableImageFilter.h

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/*
 * Copyright (C) 1999-2011 Insight Software Consortium
 * 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 otbPrintableImageFilter_h
#define otbPrintableImageFilter_h
 
#include "otbImage.h"
#include "itkImageToImageFilter.h"
#include "otbVectorRescaleIntensityImageFilter.h"
#include "otbMultiChannelExtractROI.h"
#include "itkBinaryFunctorImageFilter.h"
 
namespace otb
{
namespace Functor
{
template <class TInputPixel, class TMaskPixel, class TOutputPixel>
class ITK_EXPORT MaskFunctor
{
public:
  MaskFunctor()
  {
    m_BackgroundValue = 0;
    m_ObjectColor.SetSize(3);
    m_ObjectColor.Fill(255);
  };
  ~MaskFunctor()
  {
  }
 
  typedef TInputPixel                         InputPixelType;
  typedef TMaskPixel                          MaskPixelType;
  typedef TOutputPixel                        OutputPixelType;
  typedef typename OutputPixelType::ValueType OutputInternalPixelType;
 
  MaskPixelType GetBackgroundValue()
  {
    return m_BackgroundValue;
  }
  void SetBackgroundValue(MaskPixelType val)
  {
    m_BackgroundValue = val;
  }
 
  OutputPixelType GetObjectColor()
  {
    return m_ObjectColor;
  }
  void SetObjectColor(OutputPixelType val)
  {
    m_ObjectColor = val;
  }
 
  inline OutputPixelType operator()(InputPixelType inPix, MaskPixelType maskPix) const
  {
    OutputPixelType outPix;
    if (maskPix == m_BackgroundValue)
    {
      outPix.SetSize(inPix.Size());
      for (unsigned int i = 0; i < outPix.Size(); ++i)
      {
        outPix[i] = static_cast<OutputInternalPixelType>(inPix[i]);
      }
    }
    else
    {
      outPix = m_ObjectColor;
    }
 
    return outPix;
  }
 
protected:
  MaskPixelType   m_BackgroundValue;
  OutputPixelType m_ObjectColor;
};
}
 
template <class TInputImage, class TMaskImage = otb::Image<unsigned char, 2>>
class ITK_EXPORT PrintableImageFilter : public itk::ImageToImageFilter<TInputImage, otb::VectorImage<unsigned char, 2>>
{
public:
  typedef PrintableImageFilter Self;
  typedef itk::ImageToImageFilter<TInputImage, otb::VectorImage<unsigned char, 2>> Superclass;
  typedef itk::SmartPointer<Self>       Pointer;
  typedef itk::SmartPointer<const Self> ConstPointer;
 
  typedef TInputImage                                InputImageType;
  typedef typename InputImageType::PixelType         InputPixelType;
  typedef typename InputImageType::InternalPixelType InputInternalPixelType;
  //   typedef typename itk::NumericTraits<InputPixelType>::ValueType InputInternalPixelType;
  typedef unsigned char OutputInternalPixelType;
  typedef VectorImage<OutputInternalPixelType, 2> OutputImageType;
  typedef OutputImageType::PixelType OutputPixelType;
 
  typedef TMaskImage                        MaskImageType;
  typedef typename MaskImageType::Pointer   MaskImagePointerType;
  typedef typename MaskImageType::PixelType MaskPixelType;
 
  typedef otb::MultiChannelExtractROI<InputInternalPixelType, InputInternalPixelType> ChannelExtractorType;
  typedef typename ChannelExtractorType::ChannelsType ChannelsType;
 
  typedef VectorRescaleIntensityImageFilter<typename ChannelExtractorType::OutputImageType, OutputImageType> VectorRescalerType;
 
  typedef Functor::MaskFunctor<InputPixelType, MaskPixelType, OutputPixelType> FunctorType;
  typedef itk::BinaryFunctorImageFilter<OutputImageType, MaskImageType, OutputImageType, FunctorType> FunctorFilterType;
  typedef typename FunctorFilterType::Pointer FunctorFilterPointerType;
 
  itkNewMacro(Self);
 
  itkTypeMacro(PrintableImageFilter, itk::ImageToImageFilter);
 
  void PrintSelf(std::ostream& os, itk::Indent indent) const override;
 
  void SetChannel(unsigned int channel);
  const ChannelsType GetChannels(void) const;
 
  otbSetObjectMemberMacro(Rescaler, AutomaticInputMinMaxComputation, bool);
  otbGetObjectMemberMacro(Rescaler, AutomaticInputMinMaxComputation, bool);
  otbSetObjectMemberMacro(Rescaler, InputMinimum, InputPixelType);
  otbGetObjectMemberMacro(Rescaler, InputMinimum, InputPixelType);
  otbSetObjectMemberMacro(Rescaler, InputMaximum, InputPixelType);
  otbGetObjectMemberMacro(Rescaler, InputMaximum, InputPixelType);
 
  void SetInputMask(const MaskImageType* mask);
 
  MaskImageType* GetInputMask(void);
 
  itkSetMacro(UseMask, bool);
  itkGetMacro(UseMask, bool);
 
  ChannelsType const GetChannelList()
  {
    return m_ChannelList;
  }
  /* Set the selected channel index (order is important) */
  void SetChannelList(ChannelsType chList)
  {
    if (chList.size() != 3)
    {
      itkExceptionMacro(<< "Invalid channel list, size is " << chList.size() << " instead of 3");
    }
    m_ChannelList = chList;
    this->Modified();
  }
 
  void SetObjectColor(OutputPixelType val)
  {
    if (val.GetSize() != 3)
    {
      itkExceptionMacro(<< "Invalid object color, size is " << val.Size() << " instead of 3");
    }
    m_ObjectColor = val;
    m_MaskFilter->GetFunctor().SetObjectColor(val);
    this->Modified();
  }
  itkGetMacro(ObjectColor, OutputPixelType);
 
  void SetBackgroundMaskValue(MaskPixelType val)
  {
    m_BackgroundMaskValue = val;
    m_MaskFilter->GetFunctor().SetBackgroundValue(val);
    this->Modified();
  }
  itkGetMacro(BackgroundMaskValue, MaskPixelType);
 
  void GenerateOutputInformation() override;
 
protected:
  PrintableImageFilter();
 
  void BeforeGenerateData();
  void GenerateData() override;
 
private:
  PrintableImageFilter(Self&); // intentionally not implemented
  void operator=(const Self&); // intentionally not implemented
 
  typename VectorRescalerType::Pointer   m_Rescaler;
  typename ChannelExtractorType::Pointer m_Extractor;
  // Foreground mask value
  FunctorFilterPointerType m_MaskFilter;
  // Objects (of the mask) will be displayer with the chosen color.
  OutputPixelType m_ObjectColor;
  // Use mask
  bool m_UseMask;
  // Used channel for output Image
  ChannelsType m_ChannelList;
  // Foreground mask value
  // MaskPixelType m_ForegroundMaskValue;
  // Background mask value
  MaskPixelType m_BackgroundMaskValue;
};
 
} // end namespace otb
 
#ifndef OTB_MANUAL_INSTANTIATION
#include "otbPrintableImageFilter.hxx"
#endif
 
#endif