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itkIsoContourDistanceImageFilter.h
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itkIsoContourDistanceImageFilter.h
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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkIsoContourDistanceImageFilter.h
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef _itkIsoContourDistanceImageFilter_h
#define _itkIsoContourDistanceImageFilter_h
#include "itkImageToImageFilter.h"
#include "itkNarrowBand.h"
#include "itkBarrier.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
*
*/
template <class TInputImage, class TOutputImage>
class ITK_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);
/** 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 OutputImageType::RegionType OutputImageRegionType;
/** Some typedef */
typedef typename InputImageType::SizeType InputSizeType;
typedef typename OutputImageType::SizeType SizeType;
typedef typename InputImageType::IndexType InputIndexType;
typedef typename OutputImageType::IndexType IndexType;
/** 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, InputPixelType );
itkGetMacro( LevelSetValue, InputPixelType );
/** Set/Get the value of the level set to be located. The default value is
* 0. */
itkSetMacro( FarValue, PixelType );
itkGetMacro( FarValue, PixelType );
/** Set/Get the narrowbanding flag. By default, narrowbanding is switched
* off. */
itkSetMacro( NarrowBanding, bool );
itkGetMacro( NarrowBanding, bool );
itkBooleanMacro( NarrowBanding );
/** Set/Get the narrowband. */
void SetNarrowBand( NarrowBandType * ptr );
NarrowBandPointer GetNarrowBand() const
{ return m_NarrowBand; }
protected:
IsoContourDistanceImageFilter();
~IsoContourDistanceImageFilter(){};
void PrintSelf(std::ostream& os, Indent indent) const;
void ThreadedGenerateData(const OutputImageRegionType& outputRegionForThread,
int threadId );
void ThreadedGenerateDataFull(const OutputImageRegionType& outputRegionForThread,
int threadId );
void ThreadedGenerateDataBand(const OutputImageRegionType& outputRegionForThread,
int threadId );
void BeforeThreadedGenerateData();
virtual void GenerateInputRequestedRegion();
virtual void EnlargeOutputRequestedRegion( DataObject * );
private:
IsoContourDistanceImageFilter(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
InputPixelType m_LevelSetValue;
PixelType m_FarValue;
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;
};
} // namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkIsoContourDistanceImageFilter.txx"
#endif
#endif