SoEigenvaluesToStructurenessProcessing3d Class |
OIV.ImageViz.Engines.EdgeDetection.EdgeMarking.SoEigenvaluesToStructurenessProcessing3d engine computes a structure score image.
Namespace: OIV.ImageViz.Engines.EdgeDetection.EdgeMarking
The SoEigenvaluesToStructurenessProcessing3d type exposes the following members.
Name | Description | |
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SoEigenvaluesToStructurenessProcessing3d | Constructor. |
Name | Description | |
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AbortEvaluate | Abort current processing as soon as possible. | |
Copy | Creates and returns an exact copy of the engine. | |
CopyFieldValues(SoFieldContainer) | Calls CopyFieldValues(fc, false). (Inherited from SoFieldContainer.) | |
CopyFieldValues(SoFieldContainer, Boolean) | Copies the contents of fc's fields into this object's fields. | |
Dispose |
Releases all resources used by SoDisposable.
(Inherited from SoDisposable.) | |
EnableNotify | Notification at this Field Container is enabled (if flag == true) or disabled (if flag == false). | |
Equals | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) | |
FieldsAreEqual | Returns true if this object's fields are exactly equal to fc's fields. | |
Get | Returns the values of the fields of this object in the Open Inventor ASCII file format in the given string. | |
GetAllFields | Returns a list of fields, including the eventIn's and eventOut's. | |
GetEventIn | Returns a the eventIn with the given name. | |
GetEventOut | Returns the eventOut with the given name. | |
GetField | Returns a the field of this object whose name is fieldName. | |
GetFieldName | Returns the name of the given field in the fieldName argument. | |
GetFields | Appends references to all of this object's fields to resultList, and returns the number of fields appended. | |
GetHashCode |
Overrides GetHashCode().
(Inherited from SoNetBase.) | |
GetName | Returns the name of an instance. | |
GetOutput | Returns a reference to the engine output with the given name. | |
GetOutputName | Returns (in outputName) the name of the engine output (output). | |
GetOutputs | Returns a list of outputs in this engine. | |
GetStringName | (Inherited from SoBase.) | |
GetType | Gets the Type of the current instance. (Inherited from Object.) | |
HasDefaultValues | Returns true if all of the object's fields have their default values. | |
IsEvaluating | Returns true if the engine evaluation is in progress. | |
IsNotifyEnabled | Notification is the process of telling interested objects that this object has changed. | |
IsSynchronizable | Gets the ScaleViz synchronizable state of this object. | |
Set | Sets one or more fields in this object to the values specified in the given string, which should be a string in the Open Inventor file format. | |
SetName | (Inherited from SoBase.) | |
SetSynchronizable | Sets this to be a ScaleViz synchronizable object. | |
SetToDefaults | Sets all fields in this object to their default values. | |
StartEvaluate | Evaluate engine and dependencies in another thread without blocking the current one. | |
ToString |
Converts this SoBase structure to a human readable string.
(Inherited from SoBase.) | |
Touch | Marks an instance as modified, simulating a change to it. | |
WaitEvaluate | Wait for the end of engine evaluation. |
Name | Description | |
---|---|---|
alpha | Flatness sensitivity threshold. | |
beta | Blobness sensitivity threshold. | |
inEigenvaluesImage | Image containing input eigenvalues field. | |
IsDisposable | ISafeDisposable interface implementation.
(Inherited from SoDisposable.) | |
lightness | The type of structure lightness to extract. | |
noiseCutoff | Noise scale factor. | |
outImage | Output image. | |
structureType | The type of structure lightness to extract. | |
UserData |
Gets or sets the user data to be contained by the field container.
(Inherited from SoFieldContainer.) |
Name | Description | |
---|---|---|
OnBegin | Event raised when the processing begins. | |
OnEnd | Event raised when processing ends and the result is available. | |
OnProgress | Event raised while processing is running. |
It allows to extract tubular, blob-like and plate-like structures from dark or bright background.
The computation is based on eigen values , and where .
The structure score for bright tubular structures corresponds to :
and the score for bright blob-like structures is computed as follow :
and the score for bright plate-like structures is computed as follow :
where is the Hessian norm
is a threshold which controls the flatness sensitivity, is a threshold which controls the blobness sensitivity, and c is a sensitivity threshold which controls the noise influence. with the maximum Hessian norm in the image.
For dark objects the conditions on , and are reversed.
The method is referenced by Frangi publication :
A.F.Frangi, W.J.Niessen, K.L.Vincken, M.A.Viergever, "Multiscale vessel enhancement filtering" Lecture Notes in Computer Science(MICCAI), vol. 1496, pp. 130-137, 1998.
This filter provides output float grayscale image where each voxel intensity represents a structure score.
EigenvaluesToStructurenessProcessing3d {
inEigenvaluesImage | NULL |
lightness | BRIGHT |
structureType | ROD |
alpha | 0.75f |
beta | 0.75f |
noiseCutoff | 0.5f |
Library references: EigenvaluesToStructureness3d