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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 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:
/** Standard class typedefs. */
typedef ReinitializeLevelSetImageFilter Self;
typedef ImageToImageFilter< TLevelSet, TLevelSet > Superclass;
typedef SmartPointer< Self > Pointer;
typedef SmartPointer< const Self > ConstPointer;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Run-time type information (and related methods). */
itkTypeMacro(ReinitializeLevelSetImageFilter, ImageToImageFilter);
/** LevelSetType typedef support. */
typedef LevelSetTypeDefault< TLevelSet > LevelSetType;
typedef typename LevelSetType::LevelSetImageType LevelSetImageType;
typedef typename LevelSetType::LevelSetPointer LevelSetPointer;
typedef typename LevelSetType::LevelSetConstPointer LevelSetConstPointer;
typedef typename LevelSetType::PixelType PixelType;
typedef typename LevelSetType::NodeType NodeType;
typedef typename LevelSetType::NodeContainer NodeContainer;
typedef typename LevelSetType::NodeContainerPointer NodeContainerPointer;
/** SetDimension enumeration. */
itkStaticConstMacro(SetDimension, unsigned int,
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. */
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() ITK_OVERRIDE {}
void PrintSelf(std::ostream & os, Indent indent) const ITK_OVERRIDE;
/** Internal typedefs. */
typedef Image< float, itkGetStaticConstMacro(SetDimension) > SpeedImageType;
typedef LevelSetNeighborhoodExtractor< TLevelSet > LocatorType;
typedef FastMarchingImageFilter< TLevelSet, SpeedImageType > FastMarchingImageFilterType;
void GenerateData() ITK_OVERRIDE;
virtual void GenerateDataFull();
virtual void GenerateDataNarrowBand();
virtual void AllocateOutput();
virtual void GenerateInputRequestedRegion() ITK_OVERRIDE;
virtual void EnlargeOutputRequestedRegion(DataObject *) ITK_OVERRIDE;
void SetOutputNarrowBand(NodeContainer *ptr)
{ m_OutputNarrowBand = ptr; }
private:
ITK_DISALLOW_COPY_AND_ASSIGN(ReinitializeLevelSetImageFilter);
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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