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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 itkIsoContourDistanceImageFilter_h
#define itkIsoContourDistanceImageFilter_h
#include "itkImageToImageFilter.h"
#include "itkNarrowBand.h"
#include "itkNeighborhoodIterator.h"
#include "itkBarrier.h"
#include "itkNumericTraits.h"
#include "itkSimpleFastMutexLock.h"
namespace itk
{
/** \class IsoContourDistanceImageFilter
* \brief Compute an approximate distance from an interpolated isocontour
* to the close grid points.
*
* For standard level set algorithms, it is useful to periodically
* reinitialize the evolving image to prevent numerical accuracy
* problems in computing derivatives.
* This reinitialization is done by computing a signed distance map
* to the current level set.
* This class provides the first step in this reinitialization by
* computing an estimate of the distance from the interpolated isocontour
* to the pixels (or voxels) that are close to it, i.e. for which the
* isocontour crosses a segment between them and one of their direct
* neighbors.
* This class supports narrowbanding. If the input narrowband is provided,
* the algorithm will only locate the level set within the input narrowband.
*
* Implementation of this class is based on
* Fast and Accurate Redistancing for Level Set Methods
*`Krissian K. and Westin C.F.',
* EUROCAST NeuroImaging Workshop Las Palmas Spain,
* Ninth International Conference on Computer Aided Systems Theory , pages 48-51, Feb 2003.
*
*
* \ingroup LevelSetSegmentation
*
* \ingroup ITKDistanceMap
*/
template< typename TInputImage, typename TOutputImage >
class ITK_TEMPLATE_EXPORT IsoContourDistanceImageFilter:
public ImageToImageFilter< TInputImage, TOutputImage >
{
public:
/** Standard class typedefs. */
typedef IsoContourDistanceImageFilter Self;
typedef ImageToImageFilter< TInputImage, TOutputImage > 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(IsoContourDistanceImageFilter, ImageToImageFilter);
/**Typedefs from the superclass */
typedef typename Superclass::InputImageType InputImageType;
typedef typename Superclass::OutputImageType OutputImageType;
/** Dimensionality of input and output data is assumed to be the same.
* It is inherited from the superclass. */
itkStaticConstMacro(ImageDimension, unsigned int,
TInputImage::ImageDimension);
itkStaticConstMacro(OutputImageDimension, unsigned int,
TOutputImage::ImageDimension);
/** The pixel type of the output image will be used in computations.
* Inherited from the superclass. */
typedef typename OutputImageType::PixelType PixelType;
typedef typename InputImageType::PixelType InputPixelType;
typedef typename NumericTraits< InputPixelType >::RealType PixelRealType;
typedef typename OutputImageType::RegionType OutputImageRegionType;
typedef typename InputImageType::SizeType InputSizeType;
typedef typename OutputImageType::SizeType SizeType;
typedef typename InputImageType::IndexType InputIndexType;
typedef typename OutputImageType::IndexType IndexType;
typedef typename InputImageType::SpacingType InputSpacingType;
/** NarrowBand typedef support. */
typedef BandNode< IndexType, PixelType > BandNodeType;
typedef NarrowBand< BandNodeType > NarrowBandType;
typedef typename NarrowBandType::Pointer NarrowBandPointer;
typedef typename NarrowBandType::RegionType RegionType;
typedef typename NarrowBandType::ConstIterator ConstBandIterator;
typedef typename NarrowBandType::Iterator BandIterator;
/** Set/Get the value of the level set to be located. The default value is
* 0. */
itkSetMacro(LevelSetValue, PixelRealType);
itkGetConstMacro(LevelSetValue, PixelRealType);
/** Set/Get the value of the level set to be located. The default value is
* 0. */
itkSetMacro(FarValue, PixelType);
itkGetConstMacro(FarValue, PixelType);
/** Set/Get the narrowbanding flag. By default, narrowbanding is switched
* off. */
itkSetMacro(NarrowBanding, bool);
itkGetConstMacro(NarrowBanding, bool);
itkBooleanMacro(NarrowBanding);
/** Set/Get the narrowband. */
void SetNarrowBand(NarrowBandType *ptr);
NarrowBandPointer GetNarrowBand() const
{ return m_NarrowBand; }
#ifdef ITK_USE_CONCEPT_CHECKING
// Begin concept checking
itkConceptMacro( InputEqualityComparableCheck,
( Concept::EqualityComparable< InputPixelType > ) );
itkConceptMacro( OutputEqualityComparableCheck,
( Concept::EqualityComparable< PixelType > ) );
itkConceptMacro( SameDimensionCheck,
( Concept::SameDimension< ImageDimension, OutputImageDimension > ) );
itkConceptMacro( DoubleConvertibleToOutputCheck,
( Concept::Convertible< double, PixelType > ) );
itkConceptMacro( InputConvertibleToOutputCheck,
( Concept::Convertible< InputPixelType, PixelType > ) );
itkConceptMacro( OutputAdditiveOperatorsCheck,
( Concept::AdditiveOperators< PixelType > ) );
itkConceptMacro( InputOStreamWritableCheck,
( Concept::OStreamWritable< InputPixelType > ) );
itkConceptMacro( OutputOStreamWritableCheck,
( Concept::OStreamWritable< PixelType > ) );
// End concept checking
#endif
protected:
IsoContourDistanceImageFilter();
~IsoContourDistanceImageFilter() ITK_OVERRIDE {}
void PrintSelf(std::ostream & os, Indent indent) const ITK_OVERRIDE;
void ThreadedGenerateData(const OutputImageRegionType & outputRegionForThread,
ThreadIdType threadId) ITK_OVERRIDE;
void ThreadedGenerateDataFull(const OutputImageRegionType & outputRegionForThread,
ThreadIdType threadId);
void ThreadedGenerateDataBand(const OutputImageRegionType & outputRegionForThread,
ThreadIdType threadId);
void BeforeThreadedGenerateData() ITK_OVERRIDE;
virtual void GenerateInputRequestedRegion() ITK_OVERRIDE;
virtual void EnlargeOutputRequestedRegion(DataObject *) ITK_OVERRIDE;
typedef ConstNeighborhoodIterator< InputImageType > InputNeighbordIteratorType;
typedef NeighborhoodIterator< OutputImageType > OutputNeighborhoodIteratorType;
void ComputeValue( const InputNeighbordIteratorType& inNeigIt,
OutputNeighborhoodIteratorType& outNeigIt,
unsigned int center,
const std::vector< OffsetValueType >& stride );
private:
ITK_DISALLOW_COPY_AND_ASSIGN(IsoContourDistanceImageFilter);
PixelRealType m_LevelSetValue;
PixelType m_FarValue;
InputSpacingType m_Spacing;
bool m_NarrowBanding;
NarrowBandPointer m_NarrowBand;
std::vector< RegionType > m_NarrowBandRegion;
/** A global barrier used for synchronization between all threads. */
typename Barrier::Pointer m_Barrier;
SimpleFastMutexLock m_Mutex;
};
} // namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkIsoContourDistanceImageFilter.hxx"
#endif
#endif
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