mitk::HistogramGenerator Class Reference

Provides an easy way to calculate an itk::Histogram for a mitk::Image. More...

#include <mitkHistogramGenerator.h>

List of all members.

Public Types
typedef itk::Statistics::Histogram < double >	HistogramType
Public Member Functions
	mitkClassMacro (HistogramGenerator, itk::Object)
virtual void	SetImage (mitk::Image::ConstPointer _arg)
virtual void	SetSize (int _arg)
virtual int	GetSize () const
virtual const HistogramType *	GetHistogram ()
void	ComputeHistogram ()
float	GetMaximumFrequency () const
Static Public Member Functions
static Pointer	New ()
static float	CalculateMaximumFrequency (const HistogramType *histogram)
Protected Member Functions
	HistogramGenerator ()
virtual	~HistogramGenerator ()
Protected Attributes
mitk::Image::ConstPointer	m_Image
int	m_Size
HistogramType::ConstPointer	m_Histogram

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Detailed Description

Provides an easy way to calculate an itk::Histogram for a mitk::Image.

Definition at line 31 of file mitkHistogramGenerator.h.

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Member Typedef Documentation

typedef itk::Statistics::Histogram<double> mitk::HistogramGenerator::HistogramType

Definition at line 36 of file mitkHistogramGenerator.h.

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Constructor & Destructor Documentation

mitk::HistogramGenerator::HistogramGenerator

(

)

[protected]

Definition at line 38 of file mitkHistogramGenerator.cpp.

                                           : m_Image(NULL), m_Size(256), m_Histogram(NULL)
{

}

mitk::HistogramGenerator::~HistogramGenerator

(

)

[protected, virtual]

Definition at line 43 of file mitkHistogramGenerator.cpp.

{
}

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Member Function Documentation

float mitk::HistogramGenerator::CalculateMaximumFrequency

(

const HistogramType *

histogram )

[static]

Definition at line 112 of file mitkHistogramGenerator.cpp.

{  
  HistogramType::ConstIterator itr = histogram->Begin();
  HistogramType::ConstIterator end = histogram->End();
  
  float maxFreq = 0;
  while( itr != end )
    {
    maxFreq = vnl_math_max(maxFreq,
                           // get rid of ambiguity with type signature
                           // for vnl_math_max
                           static_cast<float>(itr.GetFrequency()));
    ++itr;
    }
  return maxFreq;
};

void mitk::HistogramGenerator::ComputeHistogram

(

)

Definition at line 71 of file mitkHistogramGenerator.cpp.

References AccessByItk_2, InternalCompute(), and mitk::ImageTimeSelector::New().

Referenced by mitk::Image::GetScalarHistogram().

{
  if((m_Histogram.IsNull()) || (m_Histogram->GetMTime() < m_Image->GetMTime()))
  {
    const_cast<mitk::Image*>(m_Image.GetPointer())->SetRequestedRegionToLargestPossibleRegion(); //@todo without this, Image::GetScalarMin does not work for dim==3 (including sliceselector!)
    const_cast<mitk::Image*>(m_Image.GetPointer())->Update();
    mitk::ImageTimeSelector::Pointer timeSelector=mitk::ImageTimeSelector::New();
    timeSelector->SetInput(m_Image);
    timeSelector->SetTimeNr( 0 );
    timeSelector->UpdateLargestPossibleRegion();
    AccessByItk_2( timeSelector->GetOutput() , InternalCompute, this, m_Histogram);
  }

// debug code
  /*
    MITK_INFO << "Histogram modfied 1" << m_Histogram->GetMTime() << std::endl;
    m_Histogram->Modified();
    MITK_INFO << "Histogram modfied 2" << m_Histogram->GetMTime() << std::endl;
    MITK_INFO << "Image modfied" << m_Image->GetMTime() << std::endl;
  const unsigned int histogramSize = m_Histogram->Size();

  MITK_INFO << "Histogram size " << histogramSize << std::endl;
  
  HistogramType::ConstIterator itr = GetHistogram()->Begin();
  HistogramType::ConstIterator end = GetHistogram()->End();
  
  int bin = 0;
  while( itr != end )
    {
    MITK_INFO << "bin = " << GetHistogram()->GetBinMin(0,bin) << "--" << GetHistogram()->GetBinMax(0,bin) << " frequency = ";
    MITK_INFO << itr.GetFrequency() << std::endl;
    ++itr;
    ++bin;
    }
    */ 
}

virtual const HistogramType* mitk::HistogramGenerator::GetHistogram

(

)

[virtual]

Referenced by mitk::Image::GetScalarHistogram().

float mitk::HistogramGenerator::GetMaximumFrequency

(

)

const

Definition at line 108 of file mitkHistogramGenerator.cpp.

                                                        {
  return CalculateMaximumFrequency(this->m_Histogram);
};

virtual int mitk::HistogramGenerator::GetSize

(

)

const [virtual]

Referenced by InternalCompute().

mitk::HistogramGenerator::mitkClassMacro	(	HistogramGenerator	,
		itk::Object
	)

static Pointer mitk::HistogramGenerator::New

(

)

[static]

Referenced by QmitkVtkHistogramWidget::ComputeHistogram().

virtual void mitk::HistogramGenerator::SetImage

(

mitk::Image::ConstPointer

_arg )

[virtual]

Referenced by mitk::Image::GetScalarHistogram().

virtual void mitk::HistogramGenerator::SetSize

(

int

_arg )

[virtual]

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Member Data Documentation

HistogramType::ConstPointer mitk::HistogramGenerator::m_Histogram [protected]

Definition at line 55 of file mitkHistogramGenerator.h.

mitk::Image::ConstPointer mitk::HistogramGenerator::m_Image [protected]

Definition at line 53 of file mitkHistogramGenerator.h.

int mitk::HistogramGenerator::m_Size [protected]

Definition at line 54 of file mitkHistogramGenerator.h.

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The documentation for this class was generated from the following files:

• mitkHistogramGenerator.h
• mitkHistogramGenerator.cpp