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vtkProcrustesAlignmentFilter Class Reference

aligns a set of pointsets together More...

#include <vtkProcrustesAlignmentFilter.h>

Inherits vtkMultiBlockDataSetAlgorithm.

Public Types

typedef
vtkMultiBlockDataSetAlgorithm 
Superclass
 

Public Member Functions

virtual int IsA (const char *type)
 
vtkProcrustesAlignmentFilterNewInstance () const
 
void PrintSelf (ostream &os, vtkIndent indent)
 
virtual vtkLandmarkTransform * GetLandmarkTransform ()
 
virtual vtkPoints * GetMeanPoints ()
 
virtual void SetStartFromCentroid (bool)
 
virtual bool GetStartFromCentroid ()
 
virtual void StartFromCentroidOn ()
 
virtual void StartFromCentroidOff ()
 

Static Public Member Functions

static int IsTypeOf (const char *type)
 
static
vtkProcrustesAlignmentFilter
SafeDownCast (vtkObjectBase *o)
 
static
vtkProcrustesAlignmentFilter
New ()
 

Protected Member Functions

virtual vtkObjectBase * NewInstanceInternal () const
 
 vtkProcrustesAlignmentFilter ()
 
 ~vtkProcrustesAlignmentFilter ()
 
virtual int RequestData (vtkInformation *, vtkInformationVector **, vtkInformationVector *)
 

Protected Attributes

vtkLandmarkTransform * LandmarkTransform
 
bool StartFromCentroid
 
vtkPoints * MeanPoints
 

Detailed Description

aligns a set of pointsets together

vtkProcrustesAlignmentFilter is a filter that takes a set of pointsets (any object derived from vtkPointSet) and aligns them in a least-squares sense to their mutual mean. The algorithm is iterated until convergence, as the mean must be recomputed after each alignment.

vtkProcrustesAlignmentFilter requires a vtkMultiBlock input consisting of vtkPointSets as first level children.

The default (in vtkLandmarkTransform) is for a similarity alignment. For a rigid-body alignment (to build a 'size-and-shape' model) use:

GetLandmarkTransform()->SetModeToRigidBody().

Affine alignments are not normally used but are left in for completeness:

GetLandmarkTransform()->SetModeToAffine().

vtkProcrustesAlignmentFilter is an implementation of:

J.C. Gower (1975) Generalized Procrustes Analysis. Psychometrika, 40:33-51.

Warning
All of the input pointsets must have the same number of points.
Thanks:
Tim Hutton and Rasmus Paulsen who developed and contributed this class
See Also
vtkLandmarkTransform
Examples:
vtkProcrustesAlignmentFilter (Examples)
Tests:
vtkProcrustesAlignmentFilter (Tests)

Definition at line 67 of file vtkProcrustesAlignmentFilter.h.

Member Typedef Documentation

typedef vtkMultiBlockDataSetAlgorithm vtkProcrustesAlignmentFilter::Superclass

Definition at line 70 of file vtkProcrustesAlignmentFilter.h.

Constructor & Destructor Documentation

vtkProcrustesAlignmentFilter::vtkProcrustesAlignmentFilter ( )
protected
vtkProcrustesAlignmentFilter::~vtkProcrustesAlignmentFilter ( )
protected

Member Function Documentation

static int vtkProcrustesAlignmentFilter::IsTypeOf ( const char *  type)
static
virtual int vtkProcrustesAlignmentFilter::IsA ( const char *  type)
virtual
static vtkProcrustesAlignmentFilter* vtkProcrustesAlignmentFilter::SafeDownCast ( vtkObjectBase *  o)
static
virtual vtkObjectBase* vtkProcrustesAlignmentFilter::NewInstanceInternal ( ) const
protectedvirtual
vtkProcrustesAlignmentFilter* vtkProcrustesAlignmentFilter::NewInstance ( ) const
void vtkProcrustesAlignmentFilter::PrintSelf ( ostream &  os,
vtkIndent  indent 
)

Prints information about the state of the filter.

static vtkProcrustesAlignmentFilter* vtkProcrustesAlignmentFilter::New ( )
static

Creates with similarity transform.

virtual vtkLandmarkTransform* vtkProcrustesAlignmentFilter::GetLandmarkTransform ( )
virtual

Get the internal landmark transform. Use it to constrain the number of degrees of freedom of the alignment (i.e. rigid body, similarity, etc.). The default is a similarity alignment.

virtual vtkPoints* vtkProcrustesAlignmentFilter::GetMeanPoints ( )
virtual

Get the estimated mean point cloud

virtual void vtkProcrustesAlignmentFilter::SetStartFromCentroid ( bool  )
virtual

When on, the initial alignment is to the centroid of the cohort curves. When off, the alignment is to the centroid of the first input. Default is off for backward compatibility.

virtual bool vtkProcrustesAlignmentFilter::GetStartFromCentroid ( )
virtual

When on, the initial alignment is to the centroid of the cohort curves. When off, the alignment is to the centroid of the first input. Default is off for backward compatibility.

virtual void vtkProcrustesAlignmentFilter::StartFromCentroidOn ( )
virtual

When on, the initial alignment is to the centroid of the cohort curves. When off, the alignment is to the centroid of the first input. Default is off for backward compatibility.

virtual void vtkProcrustesAlignmentFilter::StartFromCentroidOff ( )
virtual

When on, the initial alignment is to the centroid of the cohort curves. When off, the alignment is to the centroid of the first input. Default is off for backward compatibility.

virtual int vtkProcrustesAlignmentFilter::RequestData ( vtkInformation *  ,
vtkInformationVector **  ,
vtkInformationVector *   
)
protectedvirtual

Usual data generation method.

Member Data Documentation

vtkLandmarkTransform* vtkProcrustesAlignmentFilter::LandmarkTransform
protected

Definition at line 106 of file vtkProcrustesAlignmentFilter.h.

bool vtkProcrustesAlignmentFilter::StartFromCentroid
protected

Definition at line 108 of file vtkProcrustesAlignmentFilter.h.

vtkPoints* vtkProcrustesAlignmentFilter::MeanPoints
protected

Definition at line 110 of file vtkProcrustesAlignmentFilter.h.


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