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itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel > Class Template Reference
[NumericsOptimizers]

Represents the maximum aprior (MAP) cost function used ShapePriorSegmentationLevelSetImageFilter to estimate the shape paramaeters. More...

#include <itkShapePriorMAPCostFunction.h>

Inheritance diagram for itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >:

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Collaboration diagram for itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >:

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List of all members.

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typedef FixedArray< double, 4 > WeightsType
virtual void SetWeights (WeightsType _arg)
virtual WeightsType GetWeights () const

Public Types

typedef ShapePriorMAPCostFunction Self
typedef ShapePriorMAPCostFunctionBase<
TFeatureImage, TOutputPixel > 
Superclass
typedef SmartPointer< SelfPointer
typedef SmartPointer< const
Self
ConstPointer
typedef Superclass::ParametersType ParametersType
typedef Superclass::FeatureImageType FeatureImageType
typedef Superclass::FeatureImagePointer FeatureImagePointer
typedef Superclass::MeasureType MeasureType
typedef Superclass::PixelType PixelType
typedef Superclass::NodeType NodeType
typedef Superclass::NodeContainerType NodeContainerType
typedef Superclass::ShapeFunctionType ShapeFunctionType
typedef Array< double > ArrayType

Public Member Functions

virtual const char * GetClassName () const
 itkStaticConstMacro (ImageDimension, unsigned int, TFeatureImage::ImageDimension)
virtual MeasureType ComputeLogInsideTerm (const ParametersType &parameters) const
virtual MeasureType ComputeLogGradientTerm (const ParametersType &parameters) const
virtual MeasureType ComputeLogShapePriorTerm (const ParametersType &parameters) const
virtual MeasureType ComputeLogPosePriorTerm (const ParametersType &parameters) const
virtual void Initialize (void) throw ( ExceptionObject )
virtual void SetShapeParameterMeans (ArrayType _arg)
virtual ArrayType GetShapeParameterMeans ()
virtual void SetShapeParameterStandardDeviations (ArrayType _arg)
virtual ArrayType GetShapeParameterStandardDeviations ()

Static Public Member Functions

Pointer New ()

Protected Member Functions

 ShapePriorMAPCostFunction ()
virtual ~ShapePriorMAPCostFunction ()
void PrintSelf (std::ostream &os, Indent indent) const

Detailed Description

template<class TFeatureImage, class TOutputPixel>
class itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >

Represents the maximum aprior (MAP) cost function used ShapePriorSegmentationLevelSetImageFilter to estimate the shape paramaeters.

This class follows the shape and pose parameters estimation developed in [1]. Note that this class returns the negative log of the MAP function. Using the negative function make this cost function compatible with generic optimizers which seeks the minimum of a cost function.

This class has two template parameters, the feature image type representing the edge potential map and the pixel type used to represent the output level set in the ShapePriorSegmentationLevelSetImageFilter.

See also:
ShapePriorSegmentationLevelSetImageFilter
REFERENCES
[1] Leventon, M.E. et al. "Statistical Shape Influence in Geodesic Active Contours", CVPR 2000.

Definition at line 49 of file itkShapePriorMAPCostFunction.h.


Member Typedef Documentation

template<class TFeatureImage, class TOutputPixel>
typedef Array<double> itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::ArrayType
 

Type of the array for storing shape parameter mean and standard deivation. Definition at line 92 of file itkShapePriorMAPCostFunction.h.

Referenced by itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::~ShapePriorMAPCostFunction().

template<class TFeatureImage, class TOutputPixel>
typedef SmartPointer<const Self> itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::ConstPointer
 

Reimplemented from itk::ShapePriorMAPCostFunctionBase< TFeatureImage, TOutputPixel >.

Definition at line 57 of file itkShapePriorMAPCostFunction.h.

template<class TFeatureImage, class TOutputPixel>
typedef Superclass::FeatureImagePointer itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::FeatureImagePointer
 

Reimplemented from itk::ShapePriorMAPCostFunctionBase< TFeatureImage, TOutputPixel >.

Definition at line 71 of file itkShapePriorMAPCostFunction.h.

template<class TFeatureImage, class TOutputPixel>
typedef Superclass::FeatureImageType itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::FeatureImageType
 

Type of the feature image representing the edge potential map.

Reimplemented from itk::ShapePriorMAPCostFunctionBase< TFeatureImage, TOutputPixel >.

Definition at line 70 of file itkShapePriorMAPCostFunction.h.

template<class TFeatureImage, class TOutputPixel>
typedef Superclass::MeasureType itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::MeasureType
 

Type of the return measure value.

Reimplemented from itk::ShapePriorMAPCostFunctionBase< TFeatureImage, TOutputPixel >.

Definition at line 74 of file itkShapePriorMAPCostFunction.h.

template<class TFeatureImage, class TOutputPixel>
typedef Superclass::NodeContainerType itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::NodeContainerType
 

Type of container used to store the level set nodes.

Reimplemented from itk::ShapePriorMAPCostFunctionBase< TFeatureImage, TOutputPixel >.

Definition at line 86 of file itkShapePriorMAPCostFunction.h.

template<class TFeatureImage, class TOutputPixel>
typedef Superclass::NodeType itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::NodeType
 

Type of node used to represent the active region around the zero set.

Reimplemented from itk::ShapePriorMAPCostFunctionBase< TFeatureImage, TOutputPixel >.

Definition at line 83 of file itkShapePriorMAPCostFunction.h.

template<class TFeatureImage, class TOutputPixel>
typedef Superclass::ParametersType itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::ParametersType
 

ParametersType typedef. It defines a position in the optimization search space.

Reimplemented from itk::ShapePriorMAPCostFunctionBase< TFeatureImage, TOutputPixel >.

Definition at line 67 of file itkShapePriorMAPCostFunction.h.

template<class TFeatureImage, class TOutputPixel>
typedef Superclass::PixelType itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::PixelType
 

Type of pixel used to represent the level set.

Reimplemented from itk::ShapePriorMAPCostFunctionBase< TFeatureImage, TOutputPixel >.

Definition at line 80 of file itkShapePriorMAPCostFunction.h.

template<class TFeatureImage, class TOutputPixel>
typedef SmartPointer<Self> itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::Pointer
 

Reimplemented from itk::ShapePriorMAPCostFunctionBase< TFeatureImage, TOutputPixel >.

Definition at line 56 of file itkShapePriorMAPCostFunction.h.

template<class TFeatureImage, class TOutputPixel>
typedef ShapePriorMAPCostFunction itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::Self
 

Standard class typedefs.

Reimplemented from itk::ShapePriorMAPCostFunctionBase< TFeatureImage, TOutputPixel >.

Definition at line 54 of file itkShapePriorMAPCostFunction.h.

Referenced by itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::~ShapePriorMAPCostFunction().

template<class TFeatureImage, class TOutputPixel>
typedef Superclass::ShapeFunctionType itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::ShapeFunctionType
 

Type of the shape signed distance function.

Reimplemented from itk::ShapePriorMAPCostFunctionBase< TFeatureImage, TOutputPixel >.

Definition at line 89 of file itkShapePriorMAPCostFunction.h.

template<class TFeatureImage, class TOutputPixel>
typedef ShapePriorMAPCostFunctionBase<TFeatureImage,TOutputPixel> itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::Superclass
 

Reimplemented from itk::ShapePriorMAPCostFunctionBase< TFeatureImage, TOutputPixel >.

Definition at line 55 of file itkShapePriorMAPCostFunction.h.

template<class TFeatureImage, class TOutputPixel>
typedef FixedArray<double,4> itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::WeightsType
 

Set/Get the weights for each term. Default is a vector of all ones. The weights are applied to terms in the following order: LogInsideTerm, LogGradientTerm, LogShapePriorTerm and LogPosePriorTerm. Definition at line 107 of file itkShapePriorMAPCostFunction.h.

Referenced by itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::~ShapePriorMAPCostFunction().


Constructor & Destructor Documentation

template<class TFeatureImage, class TOutputPixel>
itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::ShapePriorMAPCostFunction  )  [protected]
 

template<class TFeatureImage, class TOutputPixel>
virtual itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::~ShapePriorMAPCostFunction  )  [inline, protected, virtual]
 

Definition at line 143 of file itkShapePriorMAPCostFunction.h.

References itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::ArrayType, itk::GaussianKernelFunction::Pointer, itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::Self, and itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::WeightsType.


Member Function Documentation

template<class TFeatureImage, class TOutputPixel>
virtual MeasureType itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::ComputeLogGradientTerm const ParametersType parameters  )  const [virtual]
 

Compute the gradient term component of the MAP cost function. In particular, this method assume that ( 1 - FeatureImage ) approximates a Gaussian (zero mean, unit variance) algon the normal of the evolving contour. The gradient term is then given by a Laplacian of the goodness of fit of the Gaussian.

Implements itk::ShapePriorMAPCostFunctionBase< TFeatureImage, TOutputPixel >.

template<class TFeatureImage, class TOutputPixel>
virtual MeasureType itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::ComputeLogInsideTerm const ParametersType parameters  )  const [virtual]
 

Compute the inside term component of the MAP cost function. In particular, the method sums the number of pixels inside the current contour (defined by nodes of the active region that are less than zero) which are outside the shape specified by the input parameters.

Implements itk::ShapePriorMAPCostFunctionBase< TFeatureImage, TOutputPixel >.

template<class TFeatureImage, class TOutputPixel>
virtual MeasureType itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::ComputeLogPosePriorTerm const ParametersType parameters  )  const [virtual]
 

Compute the pose prior component of the MAP cost function. In particular, this method assumes that the pose parameters are uniformly distributed and returns a constant of zero.

Implements itk::ShapePriorMAPCostFunctionBase< TFeatureImage, TOutputPixel >.

template<class TFeatureImage, class TOutputPixel>
virtual MeasureType itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::ComputeLogShapePriorTerm const ParametersType parameters  )  const [virtual]
 

Compute the shape prior component of the MAP cost function. In particular, the method assumes that the shape parameters comes from independent Gaussian distributions defined by the ShapeParameterMeans and ShapeParameterVariances array.

Implements itk::ShapePriorMAPCostFunctionBase< TFeatureImage, TOutputPixel >.

template<class TFeatureImage, class TOutputPixel>
virtual const char* itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::GetClassName  )  const [virtual]
 

Run-time type information (and related methods).

Reimplemented from itk::ShapePriorMAPCostFunctionBase< TFeatureImage, TOutputPixel >.

template<class TFeatureImage, class TOutputPixel>
virtual ArrayType itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::GetShapeParameterMeans  )  [virtual]
 

Set/Get the array of shape parameters mean.

template<class TFeatureImage, class TOutputPixel>
virtual ArrayType itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::GetShapeParameterStandardDeviations  )  [virtual]
 

Set/Get the array of shape parameters standard deviation.

template<class TFeatureImage, class TOutputPixel>
virtual WeightsType itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::GetWeights  )  const [virtual]
 

Set/Get the weights for each term. Default is a vector of all ones. The weights are applied to terms in the following order: LogInsideTerm, LogGradientTerm, LogShapePriorTerm and LogPosePriorTerm.

template<class TFeatureImage, class TOutputPixel>
virtual void itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::Initialize void   )  throw ( ExceptionObject ) [virtual]
 

Initialize the cost function by making sure that all the components are present.

Reimplemented from itk::ShapePriorMAPCostFunctionBase< TFeatureImage, TOutputPixel >.

template<class TFeatureImage, class TOutputPixel>
itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::itkStaticConstMacro ImageDimension  ,
unsigned  int,
TFeatureImage::ImageDimension 
 

Dimension constant.

Reimplemented from itk::ShapePriorMAPCostFunctionBase< TFeatureImage, TOutputPixel >.

template<class TFeatureImage, class TOutputPixel>
Pointer itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::New  )  [static]
 

Method for creation through the object factory.

Reimplemented from itk::Object.

template<class TFeatureImage, class TOutputPixel>
void itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::PrintSelf std::ostream &  os,
Indent  indent
const [protected, virtual]
 

Methods invoked by Print() to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.

Reimplemented from itk::ShapePriorMAPCostFunctionBase< TFeatureImage, TOutputPixel >.

template<class TFeatureImage, class TOutputPixel>
virtual void itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::SetShapeParameterMeans ArrayType  _arg  )  [virtual]
 

Set/Get the array of shape parameters mean.

template<class TFeatureImage, class TOutputPixel>
virtual void itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::SetShapeParameterStandardDeviations ArrayType  _arg  )  [virtual]
 

Set/Get the array of shape parameters standard deviation.

template<class TFeatureImage, class TOutputPixel>
virtual void itk::ShapePriorMAPCostFunction< TFeatureImage, TOutputPixel >::SetWeights WeightsType  _arg  )  [virtual]
 

Set/Get the weights for each term. Default is a vector of all ones. The weights are applied to terms in the following order: LogInsideTerm, LogGradientTerm, LogShapePriorTerm and LogPosePriorTerm.


The documentation for this class was generated from the following file:
Generated at Sat Mar 31 02:39:49 2007 for ITK by doxygen 1.3.8 written by Dimitri van Heesch, © 1997-2000