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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkTobogganImageFilter.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 __itkTobogganImageFilter_h
#define __itkTobogganImageFilter_h
#include "itkImageToImageFilter.h"
#include "itkConstNeighborhoodIterator.h"
namespace itk {
/** \class TobogganImageFilter
* \brief toboggan image segmentation
* The Toboggan segmentation takes a gradient magnitude image
* as input and produces an (over-)segmentation of the image based
* on connecting each pixel to a local minimum of gradient. It is
* roughly equivalent to a watershed segmentation of the lowest level.
*
* The output is a 4 connected labeled map of the image.
* \ingroup Segmentation
*/
template<class TInputImage>
class ITK_EXPORT TobogganImageFilter :
public ImageToImageFilter<
TInputImage,
Image<unsigned long, ::itk::GetImageDimension<TInputImage>::ImageDimension> >
{
public:
/** Standard "Self" typedef. */
typedef TobogganImageFilter Self;
/** The type of input image. */
typedef TInputImage InputImageType;
/** Number of dimensions. */
itkStaticConstMacro(NDimensions, unsigned int, TInputImage::ImageDimension);
/** The type of output image. */
typedef Image<unsigned long, itkGetStaticConstMacro(NDimensions)> OutputImageType;
/** Output image pixel type. */
typedef typename OutputImageType::PixelType OutputImagePixelType;
/** Input image pixel type. */
typedef typename InputImageType::PixelType InputImagePixelType;
/** Dimension of the input and output images. */
enum {ImageDimension = InputImageType::ImageDimension };
/** Other convenient typedefs */
typedef typename InputImageType::RegionType RegionType;
typedef typename InputImageType::SizeType SizeType;
typedef typename InputImageType::IndexType IndexType;
typedef typename InputImageType::Pointer InputImagePointer;
typedef typename InputImageType::ConstPointer InputImageConstPointer;
typedef typename OutputImageType::Pointer OutputImagePointer;
/** Standard super class typedef support. */
typedef ImageToImageFilter< InputImageType, OutputImageType > Superclass;
/** Typedef support for the input image scalar value type. */
typedef typename InputImageType::PixelType ScalarType;
/** Smart pointer typedef support */
typedef SmartPointer<Self> Pointer;
/** Run-time type information (and related methods) */
itkTypeMacro(TobogganImageFilter, ImageToImageFilter);
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Standard process object method. This filter is not multithreaded. */
void GenerateData();
void GenerateInputRequestedRegion();
void EnlargeOutputRequestedRegion ( DataObject* );
/** Neighborhood iterator type */
typedef ConstNeighborhoodIterator<TInputImage>
NeighborhoodIteratorType;
#ifdef ITK_USE_CONCEPT_CHECKING
/** Begin concept checking */
itkConceptMacro(LessThanComparableCheck,
(Concept::LessThanComparable<InputImagePixelType>));
itkConceptMacro(OStreamWritableCheck,
(Concept::OStreamWritable<InputImagePixelType>));
/** End concept checking */
#endif
protected:
TobogganImageFilter();
~TobogganImageFilter() {};
void PrintSelf(std::ostream& os, Indent indent) const;
private:
TobogganImageFilter(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
}; // end of class
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkTobogganImageFilter.txx"
#endif
#endif
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