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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkOtsuThresholdImageFilter.h,v $
Language: C++
Date: $Date: 2006-04-05 13:59:37 $
Version: $Revision: 1.2 $
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 __itkOtsuThresholdImageFilter_h
#define __itkOtsuThresholdImageFilter_h
#include "itkImageToImageFilter.h"
#include "itkFixedArray.h"
namespace itk {
/** \class OtsuThresholdImageFilter
* \brief Threshold an image using the Otsu Threshold
*
* This filter creates a binary thresholded image that separates an
* image into foreground and background components. The filter
* computes the threshold using the OtsuThresholdImageCalculator and
* applies that theshold to the input image using the
* BinaryThresholdImageFilter. The NunberOfHistogram bins can be set
* for the Calculator. The InsideValue and OutsideValue can be set
* for the BinaryThresholdImageFilter.
*
* \sa OtsuThresholdImageCalculator
* \sa BinaryThresholdImageFilter
* \ingroup IntensityImageFilters Multithreaded
*/
template<class TInputImage, class TOutputImage>
class ITK_EXPORT OtsuThresholdImageFilter :
public ImageToImageFilter<TInputImage, TOutputImage>
{
public:
/** Standard Self typedef */
typedef OtsuThresholdImageFilter Self;
typedef ImageToImageFilter<TInputImage,TOutputImage> Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Runtime information support. */
itkTypeMacro(OtsuThresholdImageFilter, ImageToImageFilter);
/** Image pixel value typedef. */
typedef typename TInputImage::PixelType InputPixelType;
typedef typename TOutputImage::PixelType OutputPixelType;
/** Image related typedefs. */
typedef typename TInputImage::Pointer InputImagePointer;
typedef typename TOutputImage::Pointer OutputImagePointer;
typedef typename TInputImage::SizeType InputSizeType;
typedef typename TInputImage::IndexType InputIndexType;
typedef typename TInputImage::RegionType InputImageRegionType;
typedef typename TOutputImage::SizeType OutputSizeType;
typedef typename TOutputImage::IndexType OutputIndexType;
typedef typename TOutputImage::RegionType OutputImageRegionType;
/** Image related typedefs. */
itkStaticConstMacro(InputImageDimension, unsigned int,
TInputImage::ImageDimension ) ;
itkStaticConstMacro(OutputImageDimension, unsigned int,
TOutputImage::ImageDimension ) ;
/** Set the "outside" pixel value. The default value
* NumericTraits<OutputPixelType>::Zero. */
itkSetMacro(OutsideValue,OutputPixelType);
/** Get the "outside" pixel value. */
itkGetMacro(OutsideValue,OutputPixelType);
/** Set the "inside" pixel value. The default value
* NumericTraits<OutputPixelType>::max() */
itkSetMacro(InsideValue,OutputPixelType);
/** Get the "inside" pixel value. */
itkGetMacro(InsideValue,OutputPixelType);
/** Set/Get the number of histogram bins. Defaults is 128. */
itkSetClampMacro( NumberOfHistogramBins, unsigned long, 1,
NumericTraits<unsigned long>::max() );
itkGetMacro( NumberOfHistogramBins, unsigned long );
/** Get the computed threshold. */
itkGetMacro(Threshold,InputPixelType);
#ifdef ITK_USE_CONCEPT_CHECKING
/** Begin concept checking */
itkConceptMacro(OutputEqualityComparableCheck,
(Concept::EqualityComparable<OutputPixelType>));
itkConceptMacro(InputOStreamWritableCheck,
(Concept::OStreamWritable<InputPixelType>));
itkConceptMacro(OutputOStreamWritableCheck,
(Concept::OStreamWritable<OutputPixelType>));
/** End concept checking */
#endif
protected:
OtsuThresholdImageFilter();
~OtsuThresholdImageFilter(){};
void PrintSelf(std::ostream& os, Indent indent) const;
void GenerateInputRequestedRegion();
void GenerateData ();
private:
OtsuThresholdImageFilter(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
InputPixelType m_Threshold;
OutputPixelType m_InsideValue;
OutputPixelType m_OutsideValue;
unsigned long m_NumberOfHistogramBins;
} ; // end of class
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkOtsuThresholdImageFilter.txx"
#endif
#endif
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