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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 itkNotImageFilter_h
#define itkNotImageFilter_h
#include "itkUnaryFunctorImageFilter.h"
#include "itkLogicOpsFunctors.h"
#include "itkNumericTraits.h"
namespace itk
{
/** \class NotImageFilter
* \brief Implements the NOT logical operator pixel-wise on an image.
*
* This class is templated over the type of an
* input image and the type of the output image.
* Numeric conversions (castings) are done by the C++ defaults.
*
* Since the logical NOT operation operates only on boolean types,
* the input type must be implicitly convertible to bool, which is
* only defined in C++ for integer types, the images passed to this
* filter must comply with the requirement of using integer pixel type.
*
* The total operation over one pixel will be
*
\code
if( !A )
{
return this->m_ForegroundValue;
}
return this->m_BackgroundValue;
\endcode
*
* Where "!" is the unary Logical NOT operator in C++.
*
* \ingroup IntensityImageFilters
* \ingroup MultiThreaded
* \ingroup ITKImageIntensity
*/
template <typename TInputImage, typename TOutputImage>
class NotImageFilter
: public UnaryFunctorImageFilter<TInputImage,
TOutputImage,
Functor::NOT<typename TInputImage::PixelType, typename TOutputImage::PixelType>>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(NotImageFilter);
/** Standard class type aliases. */
using Self = NotImageFilter;
using Superclass =
UnaryFunctorImageFilter<TInputImage,
TOutputImage,
Functor::NOT<typename TInputImage::PixelType, typename TOutputImage::PixelType>>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(NotImageFilter);
/** Set/Get the value used to mark the false pixels of the result of
* the operator. Defaults to 0 */
void
SetBackgroundValue(const typename TOutputImage::PixelType & backgroundValue)
{
if (Math::NotExactlyEquals(this->GetBackgroundValue(), backgroundValue))
{
this->Modified();
this->GetFunctor().SetBackgroundValue(backgroundValue);
}
}
typename TOutputImage::PixelType
GetBackgroundValue() const
{
return this->GetFunctor().GetBackgroundValue();
}
/** Set/Get the value used to mark the false pixels of the result of
* the operator. Defaults to 1 */
void
SetForegroundValue(const typename TOutputImage::PixelType & foregroundValue)
{
std::cout << "this->GetForegroundValue(): " << this->GetForegroundValue()
<< " foregroundValue: " << foregroundValue << std::endl;
if (Math::NotExactlyEquals(this->GetForegroundValue(), foregroundValue))
{
this->Modified();
this->GetFunctor().SetForegroundValue(foregroundValue);
}
}
typename TOutputImage::PixelType
GetForegroundValue() const
{
return this->GetFunctor().GetForegroundValue();
}
#ifdef ITK_USE_CONCEPT_CHECKING
// Begin concept checking
itkConceptMacro(InputConvertibleToOutputCheck, (Concept::Convertible<typename TInputImage::PixelType, bool>));
itkConceptMacro(OutputConvertibleToOutputCheck, (Concept::Convertible<bool, typename TOutputImage::PixelType>));
itkConceptMacro(InputNotOperatorCheck, (Concept::NotOperator<typename TInputImage::PixelType>));
// End concept checking
#endif
protected:
NotImageFilter()
{
this->GetFunctor().SetForegroundValue(true);
this->GetFunctor().SetBackgroundValue(false);
}
~NotImageFilter() override = default;
};
} // end namespace itk
#endif
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