Decomposes an image into directions along basis components. More...

#include <itkImagePCADecompositionCalculator.h>

Inheritance diagram for itk::ImagePCADecompositionCalculator< TInputImage, TBasisImage >:

Collaboration diagram for itk::ImagePCADecompositionCalculator< TInputImage, TBasisImage >:

Public Types
typedef TBasisImage::ConstPointer	BasisImageConstPointer
typedef TBasisImage::Pointer	BasisImagePointer
typedef std::vector < BasisImagePointer >	BasisImagePointerVector
typedef TBasisImage	BasisImageType
typedef vnl_matrix < BasisPixelType >	BasisMatrixType
typedef TBasisImage::PixelType	BasisPixelType
typedef vnl_vector < BasisPixelType >	BasisVectorType
typedef SmartPointer< const Self >	ConstPointer
typedef TInputImage::ConstPointer	InputImageConstPointer
typedef TInputImage::Pointer	InputImagePointer
typedef TInputImage	InputImageType
typedef ImagePCAShapeModelEstimator < TInputImage, TBasisImage > ::Pointer	ModelPointerType
typedef SmartPointer< Self >	Pointer
typedef ImagePCADecompositionCalculator	Self
typedef Object	Superclass
Public Member Functions
void	Compute (void)
virtual ::itk::LightObject::Pointer	CreateAnother (void) const
BasisImagePointerVector	GetBasisImages ()
virtual const char *	GetNameOfClass () const
void	SetBasisFromModel (ModelPointerType model)
void	SetBasisImages (const BasisImagePointerVector &)

virtual void	SetImage (const InputImageType *_arg)
virtual const InputImageType *	GetImage ()

virtual void	SetMeanImage (const BasisImageType *_arg)
virtual const BasisImageType *	GetMeanImage ()
Static Public Member Functions
static Pointer	New ()
Static Public Attributes
static const unsigned int	BasisImageDimension = TBasisImage::ImageDimension
static const unsigned int	InputImageDimension = TInputImage::ImageDimension
Protected Member Functions
void	CalculateBasisMatrix (void)
void	CalculateRecenteredImageAsVector (void)
Private Types
typedef BasisImageType::SizeType	BasisSizeType
Private Member Functions
	ImagePCADecompositionCalculator (const Self &)
void	operator= (const Self &)
Private Attributes
BasisImagePointerVector	m_BasisImages
BasisMatrixType	m_BasisMatrix
bool	m_BasisMatrixCalculated
InputImageConstPointer	m_Image
BasisVectorType	m_ImageAsVector
BasisImageConstPointer	m_MeanImage
SizeValueType	m_NumPixels
BasisVectorType	m_Projection
BasisSizeType	m_Size
virtual BasisVectorType	GetProjection () const
	ImagePCADecompositionCalculator ()
virtual	~ImagePCADecompositionCalculator ()
void	PrintSelf (std::ostream &os, Indent indent) const

Detailed Description

template<class TInputImage, class TBasisImage = Image< double, ::itk::GetImageDimension< TInputImage >::ImageDimension >>
class itk::ImagePCADecompositionCalculator< TInputImage, TBasisImage >

Decomposes an image into directions along basis components.

This calculator computes the projection of an image into a subspace specified by some basis set of images, and, optionally, a mean image (e.g a translation to a new origin). Typically, this basis/mean image will be the mean and principal components of an image data set, as calculated by an ImagePCAShapeModelEstimator. The output of the calculator is a vnl_vector containing the coefficients along each dimension of the provided basis set. To use this calculator, set the basis images with the SetBasisImage method, and optionally set the mean image with the SetMeanImage method. In the PCA case, the zeroth output of the ImagePCAShapeModelEstimator is the mean image and subsequent outputs are the basis images. SetBasisFromModel is a convenience method to set all of this information from a given ImagePCAShapeModelEstimator instance.

This class is templated over the input image type and the type of images used to describe the basis.

Warning:: This method assumes that the input image consists of scalar pixel types.; All images (input, basis, and mean) must be the same size.

Author:: Zachary Pincus

Definition at line 60 of file itkImagePCADecompositionCalculator.h.