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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 itkDivideImageFilter_h
#define itkDivideImageFilter_h
#include "itkBinaryGeneratorImageFilter.h"
#include "itkArithmeticOpsFunctors.h"
#include "itkNumericTraits.h"
#include "itkMath.h"
namespace itk
{
/**
* \class DivideImageFilter
* \brief Pixel-wise division of two images.
*
* This class is templated over the types of the two
* input images and the type of the output image. When the divisor is zero,
* the division result is set to the maximum number that can be
* represented by default to avoid exception. Numeric conversions
* (castings) are done by the C++ defaults.
*
* \ingroup IntensityImageFilters
* \ingroup MultiThreaded
* \ingroup ITKImageIntensity
*
* \sphinx
* \sphinxexample{Filtering/ImageIntensity/PixelDivisionOfTwoImages,Pixel Division Of Two Images}
* \endsphinx
*/
template <typename TInputImage1, typename TInputImage2, typename TOutputImage>
class ITK_TEMPLATE_EXPORT DivideImageFilter
: public BinaryGeneratorImageFilter<TInputImage1, TInputImage2, TOutputImage>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(DivideImageFilter);
/**
* Standard "Self" type alias.
*/
using Self = DivideImageFilter;
/**
* Standard "Superclass" type alias.
*/
using Superclass = BinaryGeneratorImageFilter<TInputImage1, TInputImage2, TOutputImage>;
/**
* Smart pointer type alias support
*/
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
using FunctorType =
Functor::Div<typename TInputImage1::PixelType, typename TInputImage2::PixelType, typename TOutputImage::PixelType>;
/**
* Method for creation through the object factory.
*/
itkNewMacro(Self);
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(DivideImageFilter);
#ifdef ITK_USE_CONCEPT_CHECKING
// Begin concept checking
itkConceptMacro(IntConvertibleToInput2Check, (Concept::Convertible<int, typename TInputImage2::PixelType>));
itkConceptMacro(Input1Input2OutputDivisionOperatorsCheck,
(Concept::DivisionOperators<typename TInputImage1::PixelType,
typename TInputImage2::PixelType,
typename TOutputImage::PixelType>));
// End concept checking
#endif
protected:
DivideImageFilter()
{
#if !defined(ITK_WRAPPING_PARSER)
Superclass::SetFunctor(FunctorType());
#endif
}
~DivideImageFilter() override = default;
void
VerifyPreconditions() ITKv5_CONST override
{
Superclass::VerifyPreconditions();
const auto * input =
dynamic_cast<const typename Superclass::DecoratedInput2ImagePixelType *>(this->ProcessObject::GetInput(1));
if (input != nullptr && itk::Math::AlmostEquals(input->Get(), typename TInputImage2::PixelType{}))
{
itkGenericExceptionMacro("The constant value used as denominator should not be set to zero");
}
}
};
} // end namespace itk
#endif
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