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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 itkBinaryProjectionImageFilter_h
#define itkBinaryProjectionImageFilter_h
#include "itkProjectionImageFilter.h"
#include "itkConceptChecking.h"
namespace itk
{
/** \class BinaryProjectionImageFilter
* \brief Binary projection
*
* This class was contributed to the Insight Journal by Gaetan Lehmann.
* The original paper can be found at
* https://www.insight-journal.org/browse/publication/71
*
* \author Gaetan Lehmann. Biologie du Developpement et de la Reproduction,
* INRA de Jouy-en-Josas, France.
*
* \sa ProjectionImageFilter
* \sa MedianProjectionImageFilter
* \sa MeanProjectionImageFilter
* \sa MeanProjectionImageFilter
* \sa MaximumProjectionImageFilter
* \sa MinimumProjectionImageFilter
* \sa StandardDeviationProjectionImageFilter
* \sa SumProjectionImageFilter
* \ingroup ITKImageStatistics
*/
namespace Functor
{
template <typename TInputPixel, typename TOutputPixel>
class BinaryAccumulator
{
public:
BinaryAccumulator(SizeValueType) {}
~BinaryAccumulator() = default;
inline void
Initialize()
{
m_IsForeground = false;
}
inline void
operator()(const TInputPixel & input)
{
if (input == m_ForegroundValue)
{
m_IsForeground = true;
}
}
inline TOutputPixel
GetValue()
{
if (m_IsForeground)
{
return (TOutputPixel)m_ForegroundValue;
}
else
{
return m_BackgroundValue;
}
}
bool m_IsForeground;
TInputPixel m_ForegroundValue;
TOutputPixel m_BackgroundValue;
};
} // namespace Functor
template <typename TInputImage, typename TOutputImage>
class BinaryProjectionImageFilter
: public ProjectionImageFilter<
TInputImage,
TOutputImage,
Functor::BinaryAccumulator<typename TInputImage::PixelType, typename TOutputImage::PixelType>>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(BinaryProjectionImageFilter);
using Self = BinaryProjectionImageFilter;
using Superclass = ProjectionImageFilter<
TInputImage,
TOutputImage,
Functor::BinaryAccumulator<typename TInputImage::PixelType, typename TOutputImage::PixelType>>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(BinaryProjectionImageFilter);
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Convenient type alias for simplifying declarations. */
using InputImageType = TInputImage;
using OutputImageType = TOutputImage;
/** Image type alias support */
using InputPixelType = typename InputImageType::PixelType;
using OutputPixelType = typename OutputImageType::PixelType;
using typename Superclass::AccumulatorType;
/** Set the value in the image to consider as "foreground". Defaults to
* maximum value of PixelType. Subclasses may alias this to
* DilateValue or ErodeValue. */
itkSetMacro(ForegroundValue, InputPixelType);
/** Get the value in the image considered as "foreground". Defaults to
* maximum value of PixelType. */
itkGetConstMacro(ForegroundValue, InputPixelType);
/** Set the value used as "background". Any pixel value which is
* not DilateValue is considered background. BackgroundValue is used
* for defining boundary conditions. Defaults to
* NumericTraits<PixelType>::NonpositiveMin(). */
itkSetMacro(BackgroundValue, OutputPixelType);
/** Get the value used as "background". Any pixel value which is
* not DilateValue is considered background. BackgroundValue is used
* for defining boundary conditions. Defaults to
* NumericTraits<PixelType>::NonpositiveMin(). */
itkGetConstMacro(BackgroundValue, OutputPixelType);
#ifdef ITK_USE_CONCEPT_CHECKING
// Begin concept checking
itkConceptMacro(InputPixelTypeGreaterThanComparable, (Concept::EqualityComparable<InputPixelType>));
itkConceptMacro(InputHasNumericTraitsCheck, (Concept::HasNumericTraits<InputPixelType>));
// End concept checking
#endif
protected:
BinaryProjectionImageFilter()
{
m_ForegroundValue = NumericTraits<InputPixelType>::max();
m_BackgroundValue = NumericTraits<OutputPixelType>::NonpositiveMin();
}
~BinaryProjectionImageFilter() override = default;
void
PrintSelf(std::ostream & os, Indent indent) const override
{
Superclass::PrintSelf(os, indent);
using InputPixelPrintType = typename NumericTraits<InputPixelType>::PrintType;
os << indent << "ForegroundValue: " << static_cast<InputPixelPrintType>(m_ForegroundValue) << std::endl;
using OutputPixelPrintType = typename NumericTraits<OutputPixelType>::PrintType;
os << indent << "BackgroundValue: " << static_cast<OutputPixelPrintType>(m_BackgroundValue) << std::endl;
}
AccumulatorType
NewAccumulator(SizeValueType size) const override
{
AccumulatorType accumulator(size);
accumulator.m_ForegroundValue = m_ForegroundValue;
accumulator.m_BackgroundValue = m_BackgroundValue;
return accumulator;
}
/** Pixel value to dilate */
InputPixelType m_ForegroundValue{};
/** Pixel value for background */
OutputPixelType m_BackgroundValue{};
}; // end BinaryProjectionImageFilter
} // end namespace itk
#endif
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