vtkSubPixelPositionEdgels Class Reference

#include <vtkSubPixelPositionEdgels.h>

Inheritance diagram for vtkSubPixelPositionEdgels:

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Collaboration diagram for vtkSubPixelPositionEdgels:

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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

Tests:: vtkSubPixelPositionEdgels (Tests)

Definition at line 47 of file vtkSubPixelPositionEdgels.h.


Public Types
typedef vtkPolyDataAlgorithm	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
static vtkSubPixelPositionEdgels *	New ()
static int	IsTypeOf (const char *type)
static vtkSubPixelPositionEdgels *	SafeDownCast (vtkObject *o)
Protected Member Functions
	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

Member Typedef Documentation

typedef vtkPolyDataAlgorithm vtkSubPixelPositionEdgels::Superclass

Reimplemented from vtkPolyDataAlgorithm.

Definition at line 51 of file vtkSubPixelPositionEdgels.h.

Constructor & Destructor Documentation

vtkSubPixelPositionEdgels::vtkSubPixelPositionEdgels ( ) [protected]

vtkSubPixelPositionEdgels::~vtkSubPixelPositionEdgels ( ) [protected]

Member Function Documentation

static vtkSubPixelPositionEdgels* vtkSubPixelPositionEdgels::New ( ) [static]

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

Reimplemented from vtkPolyDataAlgorithm.

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

Reimplemented from vtkPolyDataAlgorithm.

static int vtkSubPixelPositionEdgels::IsTypeOf ( const char * name ) [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 vtkPolyDataAlgorithm.

virtual int vtkSubPixelPositionEdgels::IsA ( const char * name ) [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 vtkPolyDataAlgorithm.

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

Reimplemented from vtkPolyDataAlgorithm.

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 vtkPolyDataAlgorithm.

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]