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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkHMinimaImageFilter.h,v $
Language: C++
Date: $Date: 2007-10-16 14:22:34 $
Version: $Revision: 1.7 $
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 __itkHMinimaImageFilter_h
#define __itkHMinimaImageFilter_h
#include "itkImageToImageFilter.h"
namespace itk {
/** \class HMinimaImageFilter
* \brief Suppress local minima whose depth below the baseline is less than h.
*
* HMinimaImageFilter suppresses local minima that are less than h
* intensity units below the (local) background. This has the effect
* of smoothing over the "low" parts of the noise in the image
* without smoothing over large changes in intensity (region
* boundaries). See the HMaximaImageFilter to suppress the local
* maxima whose height is less than h intensity units above the (local)
* background.
*
* If original image is subtracted from the output of
* HMinimaImageFilter, the signicant "valleys" in the image can be
* identified. This is what the HConcaveImageFilter provides.
*
* This filter uses the GrayscaleGeodesicErodeImageFilter. It
* provides its own input as the "mask" input to the geodesic
* dilation. The "marker" image for the geodesic dilation is
* the input image plus the height parameter h.
*
* Geodesic morphology and the H-Minima algorithm is described in
* Chapter 6 of Pierre Soille's book "Morphological Image Analysis:
* Principles and Applications", Second Edition, Springer, 2003.
*
* \sa GrayscaleGeodesicDilateImageFilter, HMinimaImageFilter, HConvexImageFilter
* \sa MorphologyImageFilter, GrayscaleDilateImageFilter, GrayscaleFunctionDilateImageFilter, BinaryDilateImageFilter
* \ingroup ImageEnhancement MathematicalMorphologyImageFilters
*/
template<class TInputImage, class TOutputImage>
class ITK_EXPORT HMinimaImageFilter :
public ImageToImageFilter<TInputImage, TOutputImage>
{
public:
/** Standard class typedefs. */
typedef HMinimaImageFilter Self;
typedef ImageToImageFilter<TInputImage, TOutputImage>
Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Some convenient typedefs. */
typedef TInputImage InputImageType;
typedef TOutputImage OutputImageType;
typedef typename InputImageType::Pointer InputImagePointer;
typedef typename InputImageType::ConstPointer InputImageConstPointer;
typedef typename InputImageType::RegionType InputImageRegionType;
typedef typename InputImageType::PixelType InputImagePixelType;
typedef typename OutputImageType::Pointer OutputImagePointer;
typedef typename OutputImageType::ConstPointer OutputImageConstPointer;
typedef typename OutputImageType::RegionType OutputImageRegionType;
typedef typename OutputImageType::PixelType OutputImagePixelType;
/** ImageDimension constants */
itkStaticConstMacro(InputImageDimension, unsigned int,
TInputImage::ImageDimension);
itkStaticConstMacro(OutputImageDimension, unsigned int,
TOutputImage::ImageDimension);
/** Standard New method. */
itkNewMacro(Self);
/** Runtime information support. */
itkTypeMacro(HMinimaImageFilter,
ImageToImageFilter);
/** Set/Get the height that a local maximum must be above the local
* background (local contrast) in order to survive the
* processing. Local maxima below this value are replaced with an
* estimate of the local background. */
itkSetMacro(Height, InputImagePixelType);
itkGetMacro(Height, InputImagePixelType);
/** \deprecated
* Get the number of iterations used to produce the current
* output. This method is scheduled for removal since the
* implementation now uses a noniterative solution. */
unsigned long GetNumberOfIterationsUsed()
{
itkLegacyBodyMacro(itk::HMinimaImageFilter::GetNumberOfIterationsUsed, 2.2);
return m_NumberOfIterationsUsed;
};
/**
* Set/Get whether the connected components are defined strictly by
* face connectivity or by face+edge+vertex connectivity. Default is
* FullyConnectedOff. For objects that are 1 pixel wide, use
* FullyConnectedOn.
*/
itkSetMacro(FullyConnected, bool);
itkGetConstReferenceMacro(FullyConnected, bool);
itkBooleanMacro(FullyConnected);
#ifdef ITK_USE_CONCEPT_CHECKING
/** Begin concept checking */
itkConceptMacro(InputEqualityComparableCheck,
(Concept::EqualityComparable<InputImagePixelType>));
itkConceptMacro(IntConvertibleToInputCheck,
(Concept::Convertible<int, InputImagePixelType>));
itkConceptMacro(InputOStreamWritableCheck,
(Concept::OStreamWritable<InputImagePixelType>));
/** End concept checking */
#endif
protected:
HMinimaImageFilter();
~HMinimaImageFilter() {};
void PrintSelf(std::ostream& os, Indent indent) const;
/** HMinimaImageFilter needs the entire input be
* available. Thus, it needs to provide an implementation of
* GenerateInputRequestedRegion(). */
void GenerateInputRequestedRegion() ;
/** HMinimaImageFilter will produce the entire output. */
void EnlargeOutputRequestedRegion(DataObject *itkNotUsed(output));
/** Single-threaded version of GenerateData. This filter delegates
* to GrayscaleGeodesicErodeImageFilter. */
void GenerateData();
private:
HMinimaImageFilter(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
InputImagePixelType m_Height;
unsigned long m_NumberOfIterationsUsed;
bool m_FullyConnected;
} ; // end of class
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkHMinimaImageFilter.txx"
#endif
#endif
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