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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkBinaryPruningImageFilter.h,v $
Language: C++
Date: $Date: 2006-04-23 04:12:03 $
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 __itkBinaryPruningImageFilter_h
#define __itkBinaryPruningImageFilter_h
#include <itkImageToImageFilter.h>
#include <itkImageRegionIteratorWithIndex.h>
#include <itkNeighborhoodIterator.h>
namespace itk
{
/** \class BinaryPruningImageFilter
*
* \brief This filter removes "spurs" of less than a certain
* length in the input image.
*
* This class is parametrized over the type of the input image
* and the type of the output image.
*
* The input is assumed to be a binary image.
*
* This filter is a sequential pruning algorithm and known to be computational time
* dependable of the image size. The algorithm is the N-dimensional version
* of that given for two dimensions in:
*
* Rafael C. Gonzales and Richard E. Woods.
* Digital Image Processing.
* Addison Wesley, 491-494, (1993).
*
* \sa MorphologyImageFilter
* \sa BinaryErodeImageFilter
* \sa BinaryDilateImageFilter
* \sa BinaryThinningImageFilter
* \ingroup ImageEnhancement MathematicalMorphologyImageFilters
*/
template <class TInputImage,class TOutputImage>
class ITK_EXPORT BinaryPruningImageFilter :
public ImageToImageFilter<TInputImage,TOutputImage>
{
public:
/** Standard class typedefs. */
typedef BinaryPruningImageFilter 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( BinaryPruningImageFilter, ImageToImageFilter );
/** Type for input image. */
typedef TInputImage InputImageType;
/** Type for output image: Skelenton of the object. */
typedef TOutputImage OutputImageType;
/** Type for the region of the input image. */
typedef typename InputImageType::RegionType RegionType;
/** Type for the index of the input image. */
typedef typename RegionType::IndexType IndexType;
/** Type for the index of the input image. */
typedef typename InputImageType::PixelType PixelType ;
/** Type for the size of the input image. */
typedef typename RegionType::SizeType SizeType;
/** Pointer Type for input image. */
typedef typename InputImageType::ConstPointer InputImagePointer;
/** Pointer Type for the output image. */
typedef typename OutputImageType::Pointer OutputImagePointer;
/** Neighborhood iterator type */
typedef NeighborhoodIterator<TInputImage> NeighborhoodIteratorType ;
/** Get Skelenton by thinning image. */
OutputImageType * GetPruning(void);
/** Set/Get the iteration value */
itkSetMacro(Iteration, unsigned int);
itkGetMacro(Iteration, unsigned int);
/** ImageDimension enumeration */
itkStaticConstMacro(InputImageDimension, unsigned int,
TInputImage::ImageDimension );
itkStaticConstMacro(OutputImageDimension, unsigned int,
TOutputImage::ImageDimension );
#ifdef ITK_USE_CONCEPT_CHECKING
/** Start concept checking */
itkConceptMacro(SameDimensionCheck,
(Concept::SameDimension<InputImageDimension, OutputImageDimension>));
itkConceptMacro(SameTypeCheck,
(Concept::SameType<PixelType, typename TOutputImage::PixelType>));
itkConceptMacro(AdditiveOperatorsCheck,
(Concept::AdditiveOperators<PixelType>));
itkConceptMacro(IntConvertibleToPixelTypeCheck,
(Concept::Convertible<int, PixelType>));
itkConceptMacro(PixelLessThanIntCheck,
(Concept::LessThanComparable<PixelType, int>));
/** End concept checking */
#endif
protected:
BinaryPruningImageFilter();
virtual ~BinaryPruningImageFilter() {};
void PrintSelf(std::ostream& os, Indent indent) const;
/** Compute thinning Image. */
void GenerateData();
/** Prepare data. */
void PrepareData();
/** Compute thinning Image. */
void ComputePruneImage();
private:
BinaryPruningImageFilter(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
unsigned int m_Iteration;
}; // end of BinaryThinningImageFilter class
} //end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkBinaryPruningImageFilter.txx"
#endif
#endif
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