vtkSubPixelPositionEdgels Class Reference

#include <vtkSubPixelPositionEdgels.h>

Inheritance diagram for vtkSubPixelPositionEdgels:

[legend]Collaboration diagram for vtkSubPixelPositionEdgels:

[legend]List of all members.

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

Created by:

Martin, Ken

CVS contributions (if > 5%):

Martin, Ken (70%)
Law, Charles (7%)

CVS logs (CVSweb):

.cxx (/Graphics/vtkSubPixelPositionEdgels.cxx)
.h (/Graphics/vtkSubPixelPositionEdgels.h)

Tests:: vtkSubPixelPositionEdgels (Tests)

Definition at line 58 of file vtkSubPixelPositionEdgels.h.

Public Types

typedef vtkPolyDataToPolyDataFilter Superclass

Public Member Functions

virtual const char * GetClassName ()

virtual int IsA (const char *type)

void PrintSelf (ostream &os, vtkIndent indent)

void SetGradMaps (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

vtkSubPixelPositionEdgels * New ()

int IsTypeOf (const char *type)

vtkSubPixelPositionEdgels * SafeDownCast (vtkObject *o)

Protected Member Functions

vtkSubPixelPositionEdgels ()

~vtkSubPixelPositionEdgels ()

void Execute ()

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

Member Typedef Documentation

typedef vtkPolyDataToPolyDataFilter vtkSubPixelPositionEdgels::Superclass

Reimplemented from vtkPolyDataToPolyDataFilter.
Definition at line 62 of file vtkSubPixelPositionEdgels.h.

Constructor & Destructor Documentation

vtkSubPixelPositionEdgels::vtkSubPixelPositionEdgels ( ) [protected]

vtkSubPixelPositionEdgels::~vtkSubPixelPositionEdgels ( ) [protected]

Member Function Documentation

vtkSubPixelPositionEdgels* vtkSubPixelPositionEdgels::New ( ) [static]

Create an object with Debug turned off, modified time initialized to zero, and reference counting on.
Reimplemented from vtkAlgorithm.

virtual const char* vtkSubPixelPositionEdgels::GetClassName ( ) [virtual]

Reimplemented from vtkPolyDataToPolyDataFilter.

int vtkSubPixelPositionEdgels::IsTypeOf ( const char * type ) [static]

Return 1 if this class type is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeRevisionMacro found in vtkSetGet.h.
Reimplemented from vtkPolyDataToPolyDataFilter.

virtual int vtkSubPixelPositionEdgels::IsA ( const char * type ) [virtual]

Return 1 if this class is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeRevisionMacro found in vtkSetGet.h.
Reimplemented from vtkPolyDataToPolyDataFilter.

vtkSubPixelPositionEdgels* vtkSubPixelPositionEdgels::SafeDownCast ( vtkObject * o ) [static]

Reimplemented from vtkPolyDataToPolyDataFilter.

void vtkSubPixelPositionEdgels::PrintSelf ( ostream & os,

vtkIndent indent

) [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 vtkPolyDataToPolyDataFilter.

void vtkSubPixelPositionEdgels::SetGradMaps ( 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.

void vtkSubPixelPositionEdgels::Execute ( ) [protected, virtual]

This method is the old style execute method
Reimplemented from vtkSource.

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 94 of file vtkSubPixelPositionEdgels.h.

double vtkSubPixelPositionEdgels::TargetValue [protected]

Definition at line 95 of file vtkSubPixelPositionEdgels.h.

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

dox/Graphics/vtkSubPixelPositionEdgels.h


Public Types
typedef vtkPolyDataToPolyDataFilter	Superclass
Public Member Functions
virtual const char *	GetClassName ()
virtual int	IsA (const char *type)
void	PrintSelf (ostream &os, vtkIndent indent)

void	SetGradMaps (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
vtkSubPixelPositionEdgels *	New ()
int	IsTypeOf (const char *type)
vtkSubPixelPositionEdgels *	SafeDownCast (vtkObject *o)
Protected Member Functions
	vtkSubPixelPositionEdgels ()
	~vtkSubPixelPositionEdgels ()
void	Execute ()
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