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itk::SigmoidImageFilter< TInputImage, TOutputImage > Class Template Reference
[Intensity Image Filters, Multithreaded Filters]

Computes the sigmoid function pixel-wise. More...

#include <itkSigmoidImageFilter.h>

List of all members.

Public Types

typedef SigmoidImageFilter Self
typedef UnaryFunctorImageFilter<
TInputImage, TOutputImage,
Function::Sigmoid< typename
TInputImage::PixelType, typename
TOutputImage::PixelType > > 		Superclass
typedef SmartPointer< Self > Pointer
typedef SmartPointer< const
Self > 		ConstPointer
typedef TOutputImage::PixelType OutputPixelType

Public Member Functions

void SetAlpha (double alpha)
void SetBeta (double beta)
void SetOutputMinimum (OutputPixelType min)
void SetOutputMaximum (OutputPixelType max)

Static Public Member Functions

Pointer New ()

Protected Member Functions

 SigmoidImageFilter ()
virtual ~SigmoidImageFilter ()

Detailed Description

template<class TInputImage, class TOutputImage>
class itk::SigmoidImageFilter< TInputImage, TOutputImage >

Computes the sigmoid function pixel-wise.

A linear transformation is applied first on the argument of the sigmoid fuction. The resulting total transfrom is given by

\[ f(x) = (Max-Min) \cdot \frac{1}{\left(1+e^{-(\frac{ x - \beta }{\alpha}\right)}} + Min \]

Every output pixel is equal to f(x). Where x is the intensity of the homologous input pixel, and alpha and beta are user-provided constants.

Definition at line 97 of file itkSigmoidImageFilter.h.

Member Typedef Documentation

template<class TInputImage, class TOutputImage>
typedef SmartPointer<const Self> itk::SigmoidImageFilter< TInputImage, TOutputImage >::ConstPointer
 

Definition at line 111 of file itkSigmoidImageFilter.h.

template<class TInputImage, class TOutputImage>
typedef TOutputImage::PixelType itk::SigmoidImageFilter< TInputImage, TOutputImage >::OutputPixelType
 

Definition at line 113 of file itkSigmoidImageFilter.h.

Referenced by itk::SigmoidImageFilter< TInputImage, TOutputImage >::SetOutputMaximum(), and itk::SigmoidImageFilter< TInputImage, TOutputImage >::SetOutputMinimum().

template<class TInputImage, class TOutputImage>
typedef SmartPointer<Self> itk::SigmoidImageFilter< TInputImage, TOutputImage >::Pointer
 

Definition at line 110 of file itkSigmoidImageFilter.h.

template<class TInputImage, class TOutputImage>
typedef SigmoidImageFilter itk::SigmoidImageFilter< TInputImage, TOutputImage >::Self
 

Standard class typedefs. Definition at line 106 of file itkSigmoidImageFilter.h.

template<class TInputImage, class TOutputImage>
typedef UnaryFunctorImageFilter<TInputImage,TOutputImage, Function::Sigmoid< typename TInputImage::PixelType, typename TOutputImage::PixelType> > itk::SigmoidImageFilter< TInputImage, TOutputImage >::Superclass
 

Definition at line 109 of file itkSigmoidImageFilter.h.

Constructor & Destructor Documentation

template<class TInputImage, class TOutputImage>
itk::SigmoidImageFilter< TInputImage, TOutputImage >::SigmoidImageFilter (   )  [inline, protected]
 

Definition at line 159 of file itkSigmoidImageFilter.h.

template<class TInputImage, class TOutputImage>
virtual itk::SigmoidImageFilter< TInputImage, TOutputImage >::~SigmoidImageFilter (   )  [inline, protected, virtual]
 

Definition at line 160 of file itkSigmoidImageFilter.h.

Member Function Documentation

template<class TInputImage, class TOutputImage>
Pointer itk::SigmoidImageFilter< TInputImage, TOutputImage >::New (   )  [static]
 

Method for creation through the object factory.

template<class TInputImage, class TOutputImage>
void itk::SigmoidImageFilter< TInputImage, TOutputImage >::SetAlpha (  double  alpha  )  [inline]
 

Definition at line 118 of file itkSigmoidImageFilter.h.

template<class TInputImage, class TOutputImage>
void itk::SigmoidImageFilter< TInputImage, TOutputImage >::SetBeta (  double  beta  )  [inline]
 

Definition at line 128 of file itkSigmoidImageFilter.h.

template<class TInputImage, class TOutputImage>
void itk::SigmoidImageFilter< TInputImage, TOutputImage >::SetOutputMaximum (  OutputPixelType  max  )  [inline]
 

Definition at line 148 of file itkSigmoidImageFilter.h.

References itk::SigmoidImageFilter< TInputImage, TOutputImage >::OutputPixelType.

template<class TInputImage, class TOutputImage>
void itk::SigmoidImageFilter< TInputImage, TOutputImage >::SetOutputMinimum (  OutputPixelType  min  )  [inline]
 

Definition at line 138 of file itkSigmoidImageFilter.h.

References itk::SigmoidImageFilter< TInputImage, TOutputImage >::OutputPixelType.

The documentation for this class was generated from the following file:
Generated at Sat Mar 31 02:49:58 2007 for ITK by doxygen 1.3.8 written by Dimitri van Heesch, © 1997-2000