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/*=========================================================================
*
* Copyright Insight Software Consortium
*
* 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.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 parametrized 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://hdl.handle.net/1926/584 or
* http://www.insight-journal.org/browse/publication/176
*
* \ingroup IntensityImageFilters MultiThreaded
* \ingroup ITKLabelMap
*
* \wiki
* \wikiexample{ImageProcessing/BinaryNotImageFilter,Invert an image using the Binary Not operation}
* \endwiki
*/
namespace Functor {
template< typename TPixel >
class BinaryNot
{
public:
BinaryNot() {};
~BinaryNot() {};
bool operator!=( const BinaryNot & ) const
{
return false;
}
bool operator==( const BinaryNot & other ) const
{
return !(*this != other);
}
inline TPixel operator()( const TPixel & A )
{
bool a = ( A == m_ForegroundValue );
if( !a )
{
return m_ForegroundValue;
}
return m_BackgroundValue;
}
TPixel m_ForegroundValue;
TPixel m_BackgroundValue;
};
}
template <typename TImage>
class BinaryNotImageFilter :
public UnaryFunctorImageFilter< TImage, TImage, Functor::BinaryNot< typename TImage::PixelType > >
{
public:
/** Standard class typedefs. */
typedef BinaryNotImageFilter Self;
typedef UnaryFunctorImageFilter<TImage, TImage,
Functor::BinaryNot< typename TImage::PixelType> > Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Runtime information support. */
itkTypeMacro(BinaryNotImageFilter,
UnaryFunctorImageFilter);
typedef typename TImage::PixelType PixelType;
/** Set/Get the value in the image considered as "foreground". Defaults to
* maximum value of PixelType. */
itkSetMacro(ForegroundValue, PixelType);
itkGetConstMacro(ForegroundValue, PixelType);
/** Set the value used as "background". Defaults to
* NumericTraits<PixelType>::NonpositiveMin(). */
itkSetMacro(BackgroundValue, PixelType);
/** Get the value used as "background". Defaults to
* NumericTraits<PixelType>::NonpositiveMin(). */
itkGetConstMacro(BackgroundValue, PixelType);
protected:
BinaryNotImageFilter()
{
m_ForegroundValue = NumericTraits<PixelType>::max();
m_BackgroundValue = NumericTraits<PixelType>::NonpositiveMin();
}
virtual ~BinaryNotImageFilter() ITK_OVERRIDE {}
void PrintSelf(std::ostream& os, Indent indent) const ITK_OVERRIDE
{
Superclass::PrintSelf(os,indent);
typedef typename NumericTraits<PixelType>::PrintType
PixelPrintType;
os << indent << "ForegroundValue: "
<< static_cast< PixelPrintType > (m_ForegroundValue)
<< std::endl;
os << indent << "BackgroundValue: "
<< static_cast< PixelPrintType > (m_BackgroundValue)
<< std::endl;
}
void GenerateData() ITK_OVERRIDE
{
this->GetFunctor().m_ForegroundValue = m_ForegroundValue;
this->GetFunctor().m_BackgroundValue = m_BackgroundValue;
Superclass::GenerateData();
}
private:
ITK_DISALLOW_COPY_AND_ASSIGN(BinaryNotImageFilter);
PixelType m_ForegroundValue;
PixelType m_BackgroundValue;
};
} // end namespace itk
#endif
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