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vtkSubPixelPositionEdgels Class Reference

adjust edgel locations based on gradients. More...

#include <vtkSubPixelPositionEdgels.h>

Inherits vtkPolyDataAlgorithm.

Public Types

typedef vtkPolyDataAlgorithm Superclass
 

Public Member Functions

virtual int IsA (const char *type)
 
vtkSubPixelPositionEdgelsNewInstance () const
 
void PrintSelf (ostream &os, vtkIndent indent)
 
void SetGradMapsData (vtkStructuredPoints *gm)
 
vtkStructuredPoints * GetGradMaps ()
 
virtual void SetTargetFlag (int)
 
virtual int GetTargetFlag ()
 
virtual void TargetFlagOn ()
 
virtual void TargetFlagOff ()
 
virtual void SetTargetValue (double)
 
virtual double GetTargetValue ()
 

Static Public Member Functions

static vtkSubPixelPositionEdgelsNew ()
 
static int IsTypeOf (const char *type)
 
static vtkSubPixelPositionEdgelsSafeDownCast (vtkObjectBase *o)
 

Protected Member Functions

virtual vtkObjectBase * NewInstanceInternal () const
 
 vtkSubPixelPositionEdgels ()
 
 ~vtkSubPixelPositionEdgels ()
 
virtual int RequestData (vtkInformation *, vtkInformationVector **, vtkInformationVector *)
 
virtual int FillInputPortInformation (int port, vtkInformation *info)
 
void Move (int xdim, int ydim, int zdim, int x, int y, float *img, vtkDataArray *inVecs, double *result, int z, double *aspect, double *resultNormal)
 
void Move (int xdim, int ydim, int zdim, int x, int y, double *img, vtkDataArray *inVecs, double *result, int z, double *aspect, double *resultNormal)
 

Protected Attributes

int TargetFlag
 
double TargetValue
 

Detailed Description

adjust edgel locations based on gradients.

vtkSubPixelPositionEdgels is a filter that takes a series of linked edgels (digital curves) and gradient maps as input. It then adjusts the edgel locations based on the gradient data. Specifically, the algorithm first determines the neighboring gradient magnitudes of an edgel using simple interpolation of its neighbors. It then fits the following three data points: negative gradient direction gradient magnitude, edgel gradient magnitude and positive gradient direction gradient magnitude to a quadratic function. It then solves this quadratic to find the maximum gradient location along the gradient orientation. It then modifies the edgels location along the gradient orientation to the calculated maximum location. This algorithm does not adjust an edgel in the direction orthogonal to its gradient vector.

See Also
vtkImageData vtkImageGradient vtkLinkEdgels
Tests:
vtkSubPixelPositionEdgels (Tests)

Definition at line 48 of file vtkSubPixelPositionEdgels.h.

Member Typedef Documentation

typedef vtkPolyDataAlgorithm vtkSubPixelPositionEdgels::Superclass

Definition at line 52 of file vtkSubPixelPositionEdgels.h.

Constructor & Destructor Documentation

vtkSubPixelPositionEdgels::vtkSubPixelPositionEdgels ( )
protected
vtkSubPixelPositionEdgels::~vtkSubPixelPositionEdgels ( )
protected

Member Function Documentation

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

Set/Get the gradient data for doing the position adjustments.

vtkStructuredPoints* vtkSubPixelPositionEdgels::GetGradMaps ( )

Set/Get the gradient data for doing the position adjustments.

virtual void vtkSubPixelPositionEdgels::SetTargetFlag ( int  )
virtual

These methods can make the positioning look for a target scalar value instead of looking for a maximum.

virtual int vtkSubPixelPositionEdgels::GetTargetFlag ( )
virtual

These methods can make the positioning look for a target scalar value instead of looking for a maximum.

virtual void vtkSubPixelPositionEdgels::TargetFlagOn ( )
virtual

These methods can make the positioning look for a target scalar value instead of looking for a maximum.

virtual void vtkSubPixelPositionEdgels::TargetFlagOff ( )
virtual

These methods can make the positioning look for a target scalar value instead of looking for a maximum.

virtual void vtkSubPixelPositionEdgels::SetTargetValue ( double  )
virtual

These methods can make the positioning look for a target scalar value instead of looking for a maximum.

virtual double vtkSubPixelPositionEdgels::GetTargetValue ( )
virtual

These methods can make the positioning look for a target scalar value instead of looking for a maximum.

virtual int vtkSubPixelPositionEdgels::RequestData ( vtkInformation *  ,
vtkInformationVector **  ,
vtkInformationVector *   
)
protectedvirtual
virtual int vtkSubPixelPositionEdgels::FillInputPortInformation ( int  port,
vtkInformation *  info 
)
protectedvirtual
void vtkSubPixelPositionEdgels::Move ( int  xdim,
int  ydim,
int  zdim,
int  x,
int  y,
float *  img,
vtkDataArray *  inVecs,
double *  result,
int  z,
double *  aspect,
double *  resultNormal 
)
protected
void vtkSubPixelPositionEdgels::Move ( int  xdim,
int  ydim,
int  zdim,
int  x,
int  y,
double *  img,
vtkDataArray *  inVecs,
double *  result,
int  z,
double *  aspect,
double *  resultNormal 
)
protected

Member Data Documentation

int vtkSubPixelPositionEdgels::TargetFlag
protected

Definition at line 86 of file vtkSubPixelPositionEdgels.h.

double vtkSubPixelPositionEdgels::TargetValue
protected

Definition at line 87 of file vtkSubPixelPositionEdgels.h.


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