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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkFastChamferDistanceImageFilter.h,v $
Language: C++
Date: $Date: 2006-03-24 13:39:24 $
Version: $Revision: 1.6 $
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 __itkFastChamferDistanceImageFilter_h
#define __itkFastChamferDistanceImageFilter_h
#include <itkImageToImageFilter.h>
#include <itkImageRegionIteratorWithIndex.h>
#include <itkNarrowBand.h>
namespace itk
{
/** \class FastChamferDistanceImageFilter
* \brief This class compute the signed (positive and negative) chamfer distance in a narrow band
*
* \par OVERVIEW
* This filter computes a Signed Chamfer Distance Map of the input image
* specialy designed to work within the Level Set framework,
* in the Narrow Band Reinitialization (generally applied after
* IsoContourDistanceImageFilter ).
* It can however be used for other purposes.
*
* The input is assumed to contain voxels with values higher than
* the Maximal Computed Distance,
* or values between -1 and 1 for voxels close to the 0-isosurface
* from which we compute the distance.
*
* This filter is N-dimensional.
*
* \par REFERENCES
* 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 ImageFeatureExtraction
*
*/
template < class TInputImage, class TOutputImage >
class ITK_EXPORT FastChamferDistanceImageFilter :
public ImageToImageFilter<TInputImage,TOutputImage>
{
public:
/** Standard class typedefs. */
typedef FastChamferDistanceImageFilter 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( FastChamferDistanceImageFilter, ImageToImageFilter );
/** Type for input image. */
typedef TInputImage InputImageType;
/** Type for input image. */
typedef TOutputImage OutputImageType;
/** Type for the region of the input image. */
typedef typename InputImageType::RegionType RegionType;
/** Type for the region of the input image. */
typedef typename InputImageType::PixelType PixelType;
/** Type for the index of the input image. */
typedef typename RegionType::IndexType IndexType;
/** Type for the index of the input image. */
typedef typename InputImageType::OffsetType OffsetType;
/** Type for the size of the input image. */
typedef typename RegionType::SizeType SizeType;
/** The dimension of the input and output images. */
itkStaticConstMacro(ImageDimension, unsigned int,
InputImageType::ImageDimension);
itkStaticConstMacro(OutputImageDimension, unsigned int,
OutputImageType::ImageDimension);
/** Pointer Type for input image. */
typedef typename InputImageType::ConstPointer InputImagePointer;
/** NarrowBand container */
typedef BandNode<IndexType,PixelType> BandNodeType;
typedef NarrowBand<BandNodeType> NarrowBandType;
typedef typename NarrowBandType::Pointer NarrowBandPointer;
/** coefficients of the Chamfer distance for each kind of neighbor. */
itkSetVectorMacro( Weights, float, ImageDimension);
itkGetVectorMacro( Weights, const float, ImageDimension);
/** Maximal computed distance */
itkSetMacro( MaximumDistance, float);
itkGetMacro( MaximumDistance, float);
/** */
void SetRegionToProcess( const RegionType &r)
{
if ( m_RegionToProcess != r)
{
m_RegionToProcess = r;
this->Modified();
}
}
RegionType GetRegionToProcess() const
{
return m_RegionToProcess;
}
void SetNarrowBand( NarrowBandType * ptr)
{
if ( m_NarrowBand != ptr )
{
m_NarrowBand = ptr;
this->Modified();
}
}
NarrowBandPointer GetNarrowBand() const
{ return m_NarrowBand; }
#ifdef ITK_USE_CONCEPT_CHECKING
/** Begin concept checking */
itkConceptMacro(SameDimensionCheck,
(Concept::SameDimension<ImageDimension, OutputImageDimension>));
itkConceptMacro(SameTypeCheck,
(Concept::SameType<PixelType, typename TOutputImage::PixelType>));
itkConceptMacro(FloatConvertibleToPixelTypeCheck,
(Concept::Convertible<float, PixelType>));
itkConceptMacro(PixelTypeConvertibleToFloatCheck,
(Concept::Convertible<PixelType, float>));
itkConceptMacro(PixelTypeGreaterThanFloatCheck,
(Concept::GreaterThanComparable<PixelType, float>));
itkConceptMacro(PixelTypeLessThanFloatCheck,
(Concept::LessThanComparable<PixelType, float>));
itkConceptMacro(PixelTypeFloatAdditiveOperatorsCheck,
(Concept::AdditiveOperators<PixelType, float, float>));
itkConceptMacro(FloatGreaterThanPixelTypeCheck,
(Concept::GreaterThanComparable<float, PixelType>));
itkConceptMacro(FloatLessThanPixelTypeCheck,
(Concept::LessThanComparable<float, PixelType>));
/** End concept checking */
#endif
protected:
FastChamferDistanceImageFilter();
virtual ~FastChamferDistanceImageFilter() {};
void PrintSelf(std::ostream& os, Indent indent) const;
/** Compute a Signed Chamfer Distance Map up to the specified maximal distance
in n dimensions */
void GenerateDataND();
/** Compute a Signed Chamfer Distance Map up to the specified maximal distance */
void GenerateData();
private:
FastChamferDistanceImageFilter(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
float m_MaximumDistance;
/** coefficients of the Chamfer distance for each kind of neighbor. */
float m_Weights[ImageDimension];
NarrowBandPointer m_NarrowBand;
/** Region in the image to process. */
typename InputImageType::RegionType m_RegionToProcess;
}; // end of FastChamferDistanceImageFilter class
} //end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkFastChamferDistanceImageFilter.txx"
#endif
#endif
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