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itkSpeckleReducingAnisotropicDiffusionImageFilter.h
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itkSpeckleReducingAnisotropicDiffusionImageFilter.h
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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 itkSpeckleReducingAnisotropicDiffusionImageFilter_h
#define itkSpeckleReducingAnisotropicDiffusionImageFilter_h
#include "itkAnisotropicDiffusionImageFilter.h"
#include "itkSpeckleReducingAnisotropicDiffusionFunction.h"
namespace itk
{
/** \class SpeckleReducingAnisotropicDiffusionImageFilter
* \brief This filter performs Speckle Reducing Anisotropic Diffusion (SRAD)
* on a scalar itk::Image using the updated Yu-Acton gradient magnitude based
* equation.
*
* For detailed information on anisotropic diffusion, see
* itkAnisotropicDiffusionFunction and
* SpeckleReducingAnisotropicDiffusionFunction.
*
* \par Inputs and Outputs
* The input to this filter should be a 2D padded scalar itk::Image.
* The output image will be a diffused copy of the input.
* \par Parameters
* Please see the description of parameters given in
* itkAnisotropicDiffusionImageFilter.
*
* \sa AnisotropicDiffusionImageFilter
* \sa AnisotropicDiffusionFunction
* \sa SpeckleReducingAnisotropicDiffusionFunction
* \ingroup ImageEnhancement
* \ingroup ImageFilters
* \ingroup ITKAnisotropicSmoothing
* \ingroup ITKUltrasound
*/
template <typename TInputImage, typename TOutputImage = TInputImage>
class ITK_TEMPLATE_EXPORT SpeckleReducingAnisotropicDiffusionImageFilter
: public AnisotropicDiffusionImageFilter<TInputImage, TOutputImage>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(SpeckleReducingAnisotropicDiffusionImageFilter);
/** Standard class type aliases. */
using Self = SpeckleReducingAnisotropicDiffusionImageFilter;
using Superclass = AnisotropicDiffusionImageFilter<TInputImage, TOutputImage>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
/** Standard method for creation through object factory. */
itkNewMacro(Self);
/** Run-time class information. */
itkTypeMacro(SpeckleReducingAnisotropicDiffusionImageFilter, AnisotropicDiffusionImageFilter);
/** Extract information from the superclass. */
using UpdateBufferType = typename Superclass::UpdateBufferType;
/** Extract information from the superclass. */
static constexpr unsigned int ImageDimension = Superclass::ImageDimension;
#ifdef ITK_USE_CONCEPT_CHECKING
// Begin concept checking
itkConceptMacro(UpdateBufferHasNumericTraitsCheck, (Concept::HasNumericTraits<typename UpdateBufferType::PixelType>));
// End concept checking
#endif
itkSetMacro(Rho, double);
itkGetConstMacro(Rho, double);
itkSetMacro(Q0, double);
itkGetConstMacro(Q0, double);
protected:
SpeckleReducingAnisotropicDiffusionImageFilter()
: m_Q0(1.0)
, m_Rho(0.2)
{
typename SpeckleReducingAnisotropicDiffusionFunction<UpdateBufferType>::Pointer p =
SpeckleReducingAnisotropicDiffusionFunction<UpdateBufferType>::New();
this->SetDifferenceFunction(p);
}
~SpeckleReducingAnisotropicDiffusionImageFilter() override = default;
/** Prepare for the iteration process. */
void
InitializeIteration() override
{
auto * f = dynamic_cast<SpeckleReducingAnisotropicDiffusionFunction<UpdateBufferType> *>(
this->GetDifferenceFunction().GetPointer());
if (!f)
{
throw ExceptionObject(
__FILE__, __LINE__, "Speckle reducing anisotropic diffusion function is not set.", ITK_LOCATION);
}
f->SetRho(this->m_Rho);
f->SetQ0(this->m_Q0);
f->SetElapsedIterationCount(this->m_ElapsedIterations);
Superclass::InitializeIteration();
}
/** Constant for speckle scale function q0(t) */
double m_Rho;
/** Speckle coefficient of variation in the given image.
* Unity (1) assumed unless user specifies otherwise. */
double m_Q0;
};
} // namespace itk
#endif