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Kitware.VTK.vtkLinkEdgels Class Reference

vtkLinkEdgels - links edgels together to form digital curves. More...

Inheritance diagram for Kitware.VTK.vtkLinkEdgels:
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Collaboration diagram for Kitware.VTK.vtkLinkEdgels:
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List of all members.

Public Member Functions

 vtkLinkEdgels (IntPtr rawCppThis, bool callDisposalMethod, bool strong)
 Automatically generated constructor - called from generated code. DO NOT call directly.
 vtkLinkEdgels ()
 Construct instance of vtkLinkEdgels with GradientThreshold set to 0.1, PhiThreshold set to 90 degrees and LinkThreshold set to 90 degrees.
virtual double GetGradientThreshold ()
 Set/Get the threshold for image gradient thresholding.
virtual double GetLinkThreshold ()
 Set/Get the threshold for Phi vs. Alpha link thresholding.
virtual double GetPhiThreshold ()
 Set/get the threshold for Phi vs. Phi link thresholding.
override int IsA (string type)
 Undocumented Block.
new vtkLinkEdgels NewInstance ()
 Undocumented Block.
virtual void SetGradientThreshold (double _arg)
 Set/Get the threshold for image gradient thresholding.
virtual void SetLinkThreshold (double _arg)
 Set/Get the threshold for Phi vs. Alpha link thresholding.
virtual void SetPhiThreshold (double _arg)
 Set/get the threshold for Phi vs. Phi link thresholding.

Static Public Member Functions

static new vtkLinkEdgels New ()
 Construct instance of vtkLinkEdgels with GradientThreshold set to 0.1, PhiThreshold set to 90 degrees and LinkThreshold set to 90 degrees.
static new int IsTypeOf (string type)
 Undocumented Block.
static new vtkLinkEdgels SafeDownCast (vtkObjectBase o)
 Undocumented Block.

Public Attributes

new const string MRFullTypeName = "Kitware.VTK.vtkLinkEdgels"
 Automatically generated type registration mechanics.

Static Public Attributes

static new readonly string MRClassNameKey = "13vtkLinkEdgels"
 Automatically generated type registration mechanics.

Protected Member Functions

override void Dispose (bool disposing)
 Automatically generated protected Dispose method - called from public Dispose or the C# destructor. DO NOT call directly.

Private Member Functions

static internal IntPtr vtkLinkEdgels_New (ref uint mteStatus, ref uint mteIndex, ref uint rawRefCount)
static internal double vtkLinkEdgels_GetGradientThreshold_01 (HandleRef pThis)
static internal double vtkLinkEdgels_GetLinkThreshold_02 (HandleRef pThis)
static internal double vtkLinkEdgels_GetPhiThreshold_03 (HandleRef pThis)
static internal int vtkLinkEdgels_IsA_04 (HandleRef pThis, string type)
static internal int vtkLinkEdgels_IsTypeOf_05 (string type)
static internal IntPtr vtkLinkEdgels_NewInstance_07 (HandleRef pThis, ref uint mteStatus, ref uint mteIndex, ref uint rawRefCount)
static internal IntPtr vtkLinkEdgels_SafeDownCast_08 (HandleRef o, ref uint mteStatus, ref uint mteIndex, ref uint rawRefCount)
static internal void vtkLinkEdgels_SetGradientThreshold_09 (HandleRef pThis, double _arg)
static internal void vtkLinkEdgels_SetLinkThreshold_10 (HandleRef pThis, double _arg)
static internal void vtkLinkEdgels_SetPhiThreshold_11 (HandleRef pThis, double _arg)

Static Private Member Functions

static vtkLinkEdgels ()
 Automatically generated type registration mechanics.

Detailed Description

vtkLinkEdgels - links edgels together to form digital curves.

Description vtkLinkEdgels links edgels into digital curves which are then stored as polylines. The algorithm works one pixel at a time only looking at its immediate neighbors. There is a GradientThreshold that can be set that eliminates any pixels with a smaller gradient value. This can be used as the lower threshold of a two value edgel thresholding.

For the remaining edgels, links are first tried for the four connected neighbors. A successful neighbor will satisfy three tests. First both edgels must be above the gradient threshold. Second, the difference between the orientation between the two edgels (Alpha) and each edgels orientation (Phi) must be less than LinkThreshold. Third, the difference between the two edgels Phi values must be less than PhiThreshold. The most successful link is selected. The measure is simply the sum of the three angle differences (actually stored as the sum of the cosines). If none of the four connect neighbors succeeds, then the eight connect neighbors are examined using the same method.

This filter requires gradient information so you will need to use a vtkImageGradient at some point prior to this filter. Typically a vtkNonMaximumSuppression filter is also used. vtkThresholdEdgels can be used to complete the two value edgel thresholding as used in a Canny edge detector. The vtkSubpixelPositionEdgels filter can also be used after this filter to adjust the edgel locations.


Constructor & Destructor Documentation

static Kitware.VTK.vtkLinkEdgels.vtkLinkEdgels ( ) [static, private]

Automatically generated type registration mechanics.

Kitware.VTK.vtkLinkEdgels.vtkLinkEdgels ( IntPtr  rawCppThis,
bool  callDisposalMethod,
bool  strong 
)

Automatically generated constructor - called from generated code. DO NOT call directly.

Construct instance of vtkLinkEdgels with GradientThreshold set to 0.1, PhiThreshold set to 90 degrees and LinkThreshold set to 90 degrees.


Member Function Documentation

override void Kitware.VTK.vtkLinkEdgels.Dispose ( bool  disposing) [protected]

Automatically generated protected Dispose method - called from public Dispose or the C# destructor. DO NOT call directly.

Reimplemented from Kitware.VTK.vtkPolyDataAlgorithm.

virtual double Kitware.VTK.vtkLinkEdgels.GetGradientThreshold ( ) [virtual]

Set/Get the threshold for image gradient thresholding.

virtual double Kitware.VTK.vtkLinkEdgels.GetLinkThreshold ( ) [virtual]

Set/Get the threshold for Phi vs. Alpha link thresholding.

virtual double Kitware.VTK.vtkLinkEdgels.GetPhiThreshold ( ) [virtual]

Set/get the threshold for Phi vs. Phi link thresholding.

override int Kitware.VTK.vtkLinkEdgels.IsA ( string  type) [virtual]

Undocumented Block.

Reimplemented from Kitware.VTK.vtkPolyDataAlgorithm.

static new int Kitware.VTK.vtkLinkEdgels.IsTypeOf ( string  type) [static]

Undocumented Block.

Reimplemented from Kitware.VTK.vtkPolyDataAlgorithm.

Construct instance of vtkLinkEdgels with GradientThreshold set to 0.1, PhiThreshold set to 90 degrees and LinkThreshold set to 90 degrees.

Reimplemented from Kitware.VTK.vtkPolyDataAlgorithm.

Undocumented Block.

Reimplemented from Kitware.VTK.vtkPolyDataAlgorithm.

Undocumented Block.

Reimplemented from Kitware.VTK.vtkPolyDataAlgorithm.

Here is the call graph for this function:

virtual void Kitware.VTK.vtkLinkEdgels.SetGradientThreshold ( double  _arg) [virtual]

Set/Get the threshold for image gradient thresholding.

virtual void Kitware.VTK.vtkLinkEdgels.SetLinkThreshold ( double  _arg) [virtual]

Set/Get the threshold for Phi vs. Alpha link thresholding.

virtual void Kitware.VTK.vtkLinkEdgels.SetPhiThreshold ( double  _arg) [virtual]

Set/get the threshold for Phi vs. Phi link thresholding.

static internal double Kitware.VTK.vtkLinkEdgels.vtkLinkEdgels_GetGradientThreshold_01 ( HandleRef  pThis) [private]
static internal double Kitware.VTK.vtkLinkEdgels.vtkLinkEdgels_GetLinkThreshold_02 ( HandleRef  pThis) [private]
static internal double Kitware.VTK.vtkLinkEdgels.vtkLinkEdgels_GetPhiThreshold_03 ( HandleRef  pThis) [private]
static internal int Kitware.VTK.vtkLinkEdgels.vtkLinkEdgels_IsA_04 ( HandleRef  pThis,
string  type 
) [private]
static internal int Kitware.VTK.vtkLinkEdgels.vtkLinkEdgels_IsTypeOf_05 ( string  type) [private]
static internal IntPtr Kitware.VTK.vtkLinkEdgels.vtkLinkEdgels_New ( ref uint  mteStatus,
ref uint  mteIndex,
ref uint  rawRefCount 
) [private]
static internal IntPtr Kitware.VTK.vtkLinkEdgels.vtkLinkEdgels_NewInstance_07 ( HandleRef  pThis,
ref uint  mteStatus,
ref uint  mteIndex,
ref uint  rawRefCount 
) [private]
static internal IntPtr Kitware.VTK.vtkLinkEdgels.vtkLinkEdgels_SafeDownCast_08 ( HandleRef  o,
ref uint  mteStatus,
ref uint  mteIndex,
ref uint  rawRefCount 
) [private]
static internal void Kitware.VTK.vtkLinkEdgels.vtkLinkEdgels_SetGradientThreshold_09 ( HandleRef  pThis,
double  _arg 
) [private]
static internal void Kitware.VTK.vtkLinkEdgels.vtkLinkEdgels_SetLinkThreshold_10 ( HandleRef  pThis,
double  _arg 
) [private]
static internal void Kitware.VTK.vtkLinkEdgels.vtkLinkEdgels_SetPhiThreshold_11 ( HandleRef  pThis,
double  _arg 
) [private]

Member Data Documentation

new readonly string Kitware.VTK.vtkLinkEdgels.MRClassNameKey = "13vtkLinkEdgels" [static]

Automatically generated type registration mechanics.

Reimplemented from Kitware.VTK.vtkPolyDataAlgorithm.

new const string Kitware.VTK.vtkLinkEdgels.MRFullTypeName = "Kitware.VTK.vtkLinkEdgels"

Automatically generated type registration mechanics.

Reimplemented from Kitware.VTK.vtkPolyDataAlgorithm.


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