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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 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
* \ingroup ITKDistanceMap
*/
template< typename TInputImage, typename TOutputImage >
class ITK_TEMPLATE_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;
typedef FixedArray< float, ImageDimension > WeightsType;
/** coefficients of the Chamfer distance for each kind of neighbor. */
itkSetMacro(Weights, WeightsType);
itkGetConstReferenceMacro(Weights, WeightsType);
/** Maximal computed distance */
itkSetMacro(MaximumDistance, float);
itkGetConstMacro(MaximumDistance, float);
/** */
void SetRegionToProcess(const RegionType & r);
RegionType GetRegionToProcess() const;
void SetNarrowBand(NarrowBandType *ptr);
NarrowBandPointer GetNarrowBand() const;
#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() ITK_OVERRIDE {}
void PrintSelf(std::ostream & os, Indent indent) const ITK_OVERRIDE;
/** 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() ITK_OVERRIDE;
private:
ITK_DISALLOW_COPY_AND_ASSIGN(FastChamferDistanceImageFilter);
float m_MaximumDistance;
/** coefficients of the Chamfer distance for each kind of neighbor. */
WeightsType m_Weights;
NarrowBandPointer m_NarrowBand;
/** Region in the image to process. */
RegionType m_RegionToProcess;
}; // end of FastChamferDistanceImageFilter class
} //end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkFastChamferDistanceImageFilter.hxx"
#endif
#endif
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