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/*
* Copyright (C) 2005-2017 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 otbChangeLabelImageFilter_h
#define otbChangeLabelImageFilter_h
#include "itkUnaryFunctorImageFilter.h"
#include "itkConceptChecking.h"
#include "itkSimpleDataObjectDecorator.h"
#include <map>
namespace otb
{
/** \class ChangeLabelImageFilter
*
* \brief Change Sets of Labels
*
* Adapt the itkChangeLabelImageFilter for multichannel images.
*
*
* \ingroup OTBImageManipulation
*/
namespace Functor {
template<class TInput, class TOutput>
class VectorChangeLabel
{
public:
typedef typename TOutput::ValueType ValueType;
VectorChangeLabel() {}
virtual ~VectorChangeLabel() {}
typedef std::map<TInput, TOutput> ChangeMapType;
void SetNumberOfComponentsPerPixel(unsigned int nb)
{
m_NumberOfComponentsPerPixel = nb;
}
unsigned int GetNumberOfComponentsPerPixel()
{
return m_NumberOfComponentsPerPixel;
}
bool operator !=(const VectorChangeLabel& other) const
{
if (m_ChangeMap != other.m_ChangeMap)
{
return true;
}
return false;
}
bool operator ==(const VectorChangeLabel& other) const
{
return !(*this != other);
}
TOutput GetChange(const TInput& original)
{
return m_ChangeMap[original];
}
void SetChange(const TInput& original, const TOutput& result)
{
m_ChangeMap[original] = result;
}
void SetChangeMap(const ChangeMapType& changeMap)
{
m_ChangeMap = changeMap;
}
void ClearChangeMap()
{
m_ChangeMap.clear();
}
inline TOutput operator ()(const TInput& A)
{
TOutput out;
out.SetSize(m_NumberOfComponentsPerPixel);
if (m_ChangeMap.find(A) != m_ChangeMap.end())
{
out = m_ChangeMap[A];
}
else
{
out.Fill(static_cast<ValueType>(A));
}
return out;
}
private:
ChangeMapType m_ChangeMap;
unsigned int m_NumberOfComponentsPerPixel;
};
}
template <class TInputImage, class TOutputImage>
class ITK_EXPORT ChangeLabelImageFilter :
public itk::UnaryFunctorImageFilter<TInputImage, TOutputImage,
Functor::VectorChangeLabel<typename TInputImage::PixelType,
typename TOutputImage::PixelType> >
{
public:
/** Standard class typedefs. */
typedef ChangeLabelImageFilter Self;
typedef itk::UnaryFunctorImageFilter<TInputImage, TOutputImage,
Functor::VectorChangeLabel<
typename TInputImage::PixelType,
typename TOutputImage::PixelType>
> Superclass;
typedef itk::SmartPointer<Self> Pointer;
typedef itk::SmartPointer<const Self> ConstPointer;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Run-time type information (and related methods). */
itkTypeMacro(ChangeLabelImageFilter, itk::UnaryFunctorImageFilter);
/** Pixel types. */
typedef typename TInputImage::PixelType InputPixelType;
typedef typename TOutputImage::PixelType OutputPixelType;
/** Type of the change map to use for change requests */
typedef std::map<InputPixelType, OutputPixelType> ChangeMapType;
/** Set up a change of a single label */
void SetChange(const InputPixelType& original, const OutputPixelType& result);
/** Set the entire change map */
void SetChangeMap(const ChangeMapType& changeMap);
/** Clears the entire change map */
void ClearChangeMap();
/** Set/Get the number of components per pixel */
void SetNumberOfComponentsPerPixel(unsigned int nb)
{
m_NumberOfComponentsPerPixel = nb;
this->GetFunctor().SetNumberOfComponentsPerPixel(m_NumberOfComponentsPerPixel);
this->Modified();
}
itkGetMacro(NumberOfComponentsPerPixel, unsigned int);
protected:
ChangeLabelImageFilter();
~ChangeLabelImageFilter() override {}
/** Generate the output information missing */
void GenerateOutputInformation() override;
void PrintSelf(std::ostream& os, itk::Indent indent) const override;
private:
ChangeLabelImageFilter(const Self &); //purposely not implemented
void operator =(const Self&); //purposely not implemented
/// Number of components per pixel
unsigned int m_NumberOfComponentsPerPixel;
};
} // end namespace otb
#ifndef OTB_MANUAL_INSTANTIATION
#include "otbChangeLabelImageFilter.txx"
#endif
#endif
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