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/*=========================================================================
*
* Copyright NumFOCUS
*
* 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
*
* https://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
* specially 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:
ITK_DISALLOW_COPY_AND_MOVE(FastChamferDistanceImageFilter);
/** Standard class type aliases. */
using Self = FastChamferDistanceImageFilter;
using Superclass = ImageToImageFilter<TInputImage, TOutputImage>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
/** Method for creation through the object factory */
itkNewMacro(Self);
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(FastChamferDistanceImageFilter);
/** Type for input image. */
using InputImageType = TInputImage;
/** Type for input image. */
using OutputImageType = TOutputImage;
/** Type for the region of the input image. */
using RegionType = typename InputImageType::RegionType;
/** Type for the region of the input image. */
using PixelType = typename InputImageType::PixelType;
/** Type for the index of the input image. */
using IndexType = typename RegionType::IndexType;
/** Type for the index of the input image. */
using OffsetType = typename InputImageType::OffsetType;
/** Type for the size of the input image. */
using SizeType = typename RegionType::SizeType;
/** The dimension of the input and output images. */
static constexpr unsigned int ImageDimension = InputImageType::ImageDimension;
static constexpr unsigned int OutputImageDimension = OutputImageType::ImageDimension;
/** Pointer Type for input image. */
using InputImagePointer = typename InputImageType::ConstPointer;
/** NarrowBand container */
using BandNodeType = BandNode<IndexType, PixelType>;
using NarrowBandType = NarrowBand<BandNodeType>;
using NarrowBandPointer = typename NarrowBandType::Pointer;
using WeightsType = FixedArray<float, ImageDimension>;
/** 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();
~FastChamferDistanceImageFilter() override = default;
void
PrintSelf(std::ostream & os, Indent indent) const 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() override;
private:
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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