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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkOtsuMultipleThresholdsImageFilter.h,v $
Language: C++
Date: $Date: 2006-04-05 13:59:37 $
Version: $Revision: 1.3 $
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 __itkOtsuMultipleThresholdsImageFilter_h
#define __itkOtsuMultipleThresholdsImageFilter_h
#include "itkImageToImageFilter.h"
#include "itkFixedArray.h"
#include "itkOtsuMultipleThresholdsCalculator.h"
#include "itkScalarImageToHistogramGenerator.h"
namespace itk {
/** \class OtsuMultipleThresholdsImageFilter
* \brief Threshold an image using multiple Otsu Thresholds.
*
* This filter creates a labeled image that separates the input
* image into various classes. The filter
* computes the thresholds using the OtsuMultipleThresholdsCalculator and
* applies those thesholds to the input image using the
* ThresholdLabelerImageFilter. The NumberOfHistogramBins and
* NumberOfThresholds can be set
* for the Calculator. The LabelOffset can be set
* for the ThresholdLabelerImageFilter.
*
* \sa ScalarImageToHistogramGenerator
* \sa OtsuMultipleThresholdsCalculator
* \sa ThresholdLabelerImageFilter
* \ingroup IntensityImageFilters Multithreaded
*/
template<class TInputImage, class TOutputImage>
class ITK_EXPORT OtsuMultipleThresholdsImageFilter :
public ImageToImageFilter<TInputImage, TOutputImage>
{
public:
/** Standard Self typedef */
typedef OtsuMultipleThresholdsImageFilter 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(OtsuMultipleThresholdsImageFilter, 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;
/** Threshold vector types. */
typedef itk::Statistics::ScalarImageToHistogramGenerator<
TInputImage > HistogramGeneratorType;
typedef typename HistogramGeneratorType::HistogramType HistogramType;
typedef OtsuMultipleThresholdsCalculator< HistogramType > OtsuCalculatorType;
typedef typename OtsuCalculatorType::OutputType ThresholdVectorType;
/** Image related typedefs. */
itkStaticConstMacro(InputImageDimension, unsigned int,
TInputImage::ImageDimension ) ;
itkStaticConstMacro(OutputImageDimension, unsigned int,
TOutputImage::ImageDimension ) ;
/** Set/Get the number of histogram bins. Default is 128. */
itkSetClampMacro( NumberOfHistogramBins, unsigned long, 1, NumericTraits<unsigned long>::max() );
itkGetConstMacro( NumberOfHistogramBins, unsigned long );
/** Set/Get the number of thresholds. Default is 1. */
itkSetClampMacro(NumberOfThresholds, unsigned long, 1, NumericTraits<unsigned long>::max() );
itkGetConstMacro(NumberOfThresholds,unsigned long);
/** Set/Get the offset which labels have to start from. Default is 0. */
itkSetClampMacro(LabelOffset,OutputPixelType, NumericTraits<OutputPixelType>::Zero,NumericTraits<OutputPixelType>::max() );
itkGetConstMacro(LabelOffset,OutputPixelType);
/** Get the computed threshold. */
const ThresholdVectorType & GetThresholds() const
{
return m_Thresholds;
}
#ifdef ITK_USE_CONCEPT_CHECKING
/** Begin concept checking */
itkConceptMacro(OutputComparableCheck,
(Concept::Comparable<OutputPixelType>));
itkConceptMacro(OutputOStreamWritableCheck,
(Concept::OStreamWritable<OutputPixelType>));
/** End concept checking */
#endif
protected:
OtsuMultipleThresholdsImageFilter();
~OtsuMultipleThresholdsImageFilter(){};
void PrintSelf(std::ostream& os, Indent indent) const;
void GenerateInputRequestedRegion();
void GenerateData ();
private:
OtsuMultipleThresholdsImageFilter(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
unsigned long m_NumberOfHistogramBins;
unsigned long m_NumberOfThresholds;
OutputPixelType m_LabelOffset;
ThresholdVectorType m_Thresholds;
} ; // end of class
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkOtsuMultipleThresholdsImageFilter.txx"
#endif
#endif
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