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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 itkReinitializeLevelSetImageFilter_h
#define itkReinitializeLevelSetImageFilter_h
#include "itkLevelSetNeighborhoodExtractor.h"
#include "itkFastMarchingImageFilter.h"
namespace itk
{
/** \class ReinitializeLevelSetImageFilter
* \brief Reinitialize the level set to the signed distance function.
*
* ReinitializeLevelSetImageFilter reinitializes the input level set to
* the approximated signed distance function from a particular
* level set. The output is a level set of the same type as the input.
*
* For some level set algorithms, it is useful to periodically
* reinitialize the level set function to prevent numerical accuracy
* problems in computing derivatives and curvature values where level
* sets are densely bunched together.
*
* This class is templated over the image type which represents
* the level set.
*
* This class supports narrowbanding. If the input narrowband is provided,
* the algorithm will only locate the level set within the input narrowband.
* For the output, the reinitialize level set is only valid for a distance
* of OutputNarrowBandwidth / 2 of either side of the level set of interest.
*
* Implementation of this class is based on Chapter 11 of
* "Level Set Methods and Fast Marching Methods", J.A. Sethian,
* Cambridge Press, Second edition, 1999.
*
* \ingroup LevelSetSegmentation
*
* \ingroup ITKLevelSets
*/
template <typename TLevelSet>
class ITK_TEMPLATE_EXPORT ReinitializeLevelSetImageFilter : public ImageToImageFilter<TLevelSet, TLevelSet>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(ReinitializeLevelSetImageFilter);
/** Standard class type aliases. */
using Self = ReinitializeLevelSetImageFilter;
using Superclass = ImageToImageFilter<TLevelSet, TLevelSet>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(ReinitializeLevelSetImageFilter);
/** LevelSetType type alias support */
using LevelSetType = LevelSetTypeDefault<TLevelSet>;
using LevelSetImageType = typename LevelSetType::LevelSetImageType;
using LevelSetPointer = typename LevelSetType::LevelSetPointer;
using LevelSetConstPointer = typename LevelSetType::LevelSetConstPointer;
using PixelType = typename LevelSetType::PixelType;
using NodeType = typename LevelSetType::NodeType;
using NodeContainer = typename LevelSetType::NodeContainer;
using NodeContainerPointer = typename LevelSetType::NodeContainerPointer;
/** SetDimension enumeration. */
static constexpr unsigned int SetDimension = LevelSetType::SetDimension;
/** Set/Get the value of the level set to be located. The default value is
* 0. */
itkSetMacro(LevelSetValue, double);
itkGetConstMacro(LevelSetValue, double);
/** Set/Get the narrowbanding flag. By default, narrowbanding is switched
* off. */
itkSetMacro(NarrowBanding, bool);
itkGetConstMacro(NarrowBanding, bool);
itkBooleanMacro(NarrowBanding);
/** Set/Get the input narrow bandwidth. The default value is 12. */
itkSetClampMacro(InputNarrowBandwidth, double, 0.0, NumericTraits<double>::max());
itkGetConstMacro(InputNarrowBandwidth, double);
/** Set/Get the output narrow bandwidth. The default value is 12. */
itkSetClampMacro(OutputNarrowBandwidth, double, 0.0, NumericTraits<double>::max());
itkGetConstMacro(OutputNarrowBandwidth, double);
/** Set the bandwidth for both the input and output narrowband,
* By default, both the input and output are set to 12. */
void
SetNarrowBandwidth(double value)
{
this->SetInputNarrowBandwidth(value);
this->SetOutputNarrowBandwidth(value);
}
/** Set/Get the input narrowband container. */
void
SetInputNarrowBand(NodeContainer * ptr);
NodeContainerPointer
GetInputNarrowBand() const
{
return m_InputNarrowBand;
}
/** Get the output narrowband. */
NodeContainerPointer
GetOutputNarrowBand() const
{
return m_OutputNarrowBand;
}
#ifdef ITK_USE_CONCEPT_CHECKING
// Begin concept checking
itkConceptMacro(LevelSetDoubleAdditiveOperatorsCheck, (Concept::AdditiveOperators<PixelType, double>));
itkConceptMacro(LevelSetOStreamWritableCheck, (Concept::OStreamWritable<PixelType>));
// End concept checking
#endif
protected:
ReinitializeLevelSetImageFilter();
~ReinitializeLevelSetImageFilter() override = default;
void
PrintSelf(std::ostream & os, Indent indent) const override;
/** Internal type alias. */
using SpeedImageType = Image<float, Self::SetDimension>;
using LocatorType = LevelSetNeighborhoodExtractor<TLevelSet>;
using FastMarchingImageFilterType = FastMarchingImageFilter<TLevelSet, SpeedImageType>;
void
GenerateData() override;
virtual void
GenerateDataFull();
virtual void
GenerateDataNarrowBand();
virtual void
AllocateOutput();
void
GenerateInputRequestedRegion() override;
void
EnlargeOutputRequestedRegion(DataObject *) override;
void
SetOutputNarrowBand(NodeContainer * ptr)
{
m_OutputNarrowBand = ptr;
}
private:
double m_LevelSetValue{};
typename LocatorType::Pointer m_Locator{};
typename FastMarchingImageFilterType::Pointer m_Marcher{};
bool m_NarrowBanding{};
double m_InputNarrowBandwidth{};
double m_OutputNarrowBandwidth{};
NodeContainerPointer m_InputNarrowBand{};
NodeContainerPointer m_OutputNarrowBand{};
};
} // namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
# include "itkReinitializeLevelSetImageFilter.hxx"
#endif
#endif
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