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/*=========================================================================
*
* Copyright NumFOCUS
*
* 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
*
* https://www.apache.org/licenses/LICENSE-2.0.txt
*
* 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 itkBinaryNotImageFilter_h
#define itkBinaryNotImageFilter_h
#include "itkUnaryFunctorImageFilter.h"
#include "itkNumericTraits.h"
namespace itk
{
/**
* \class BinaryNotImageFilter
* \brief Implements the BinaryNot logical operator pixel-wise between two images.
*
* This class is parameterized over the types of the two
* input images and the type of the output image.
* Numeric conversions (castings) are done by the C++ defaults.
*
* The total operation over one pixel will be
*
* output_pixel = static_cast<PixelType>( input1_pixel != input2_pixel )
*
* Where "!=" is the equality operator in C++.
*
* \author Gaetan Lehmann. Biologie du Developpement et de la Reproduction, INRA de Jouy-en-Josas, France.
*
* This implementation was taken from the Insight Journal paper:
* https://www.insight-journal.org/browse/publication/176
*
* \ingroup IntensityImageFilters MultiThreaded
* \ingroup ITKLabelMap
*
* \sphinx
* \sphinxexample{Filtering/LabelMap/InvertImageUsingBinaryNot,Invert Image Using Binary Not Operation}
* \endsphinx
*/
namespace Functor
{
template <typename TPixel>
class BinaryNot
{
public:
bool
operator==(const BinaryNot &) const
{
return true;
}
ITK_UNEQUAL_OPERATOR_MEMBER_FUNCTION(BinaryNot);
inline TPixel
operator()(const TPixel & A) const
{
bool a = (A == m_ForegroundValue);
if (!a)
{
return m_ForegroundValue;
}
return m_BackgroundValue;
}
TPixel m_ForegroundValue;
TPixel m_BackgroundValue;
};
} // namespace Functor
template <typename TImage>
class BinaryNotImageFilter
: public UnaryFunctorImageFilter<TImage, TImage, Functor::BinaryNot<typename TImage::PixelType>>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(BinaryNotImageFilter);
/** Standard class type aliases. */
using Self = BinaryNotImageFilter;
using Superclass = UnaryFunctorImageFilter<TImage, TImage, Functor::BinaryNot<typename TImage::PixelType>>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(BinaryNotImageFilter);
using PixelType = typename TImage::PixelType;
/** Set/Get the value in the image considered as "foreground". Defaults to
* maximum value of PixelType. */
itkSetMacro(ForegroundValue, PixelType);
itkGetConstMacro(ForegroundValue, PixelType);
/** Set/Get the value used as "background". Defaults to
* NumericTraits<PixelType>::NonpositiveMin(). */
itkSetMacro(BackgroundValue, PixelType);
itkGetConstMacro(BackgroundValue, PixelType);
protected:
BinaryNotImageFilter()
{
m_ForegroundValue = NumericTraits<PixelType>::max();
m_BackgroundValue = NumericTraits<PixelType>::NonpositiveMin();
}
~BinaryNotImageFilter() override = default;
void
PrintSelf(std::ostream & os, Indent indent) const override
{
Superclass::PrintSelf(os, indent);
using PixelPrintType = typename NumericTraits<PixelType>::PrintType;
os << indent << "ForegroundValue: " << static_cast<PixelPrintType>(m_ForegroundValue) << std::endl;
os << indent << "BackgroundValue: " << static_cast<PixelPrintType>(m_BackgroundValue) << std::endl;
}
void
GenerateData() override
{
this->GetFunctor().m_ForegroundValue = m_ForegroundValue;
this->GetFunctor().m_BackgroundValue = m_BackgroundValue;
Superclass::GenerateData();
}
private:
PixelType m_ForegroundValue{};
PixelType m_BackgroundValue{};
};
} // end namespace itk
#endif
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