| SoRegionalExtremaProcessing Class |
OIV.ImageViz.Engines.MathematicalMorphology.GeodesicTransformations.SoRegionalExtremaProcessing engine.
Inheritance HierarchyOIV.InventorSoNetBase
OIV.InventorSoDisposable
OIV.Inventor.MiscSoBase
OIV.Inventor.FieldsSoFieldContainer
OIV.Inventor.EnginesSoEngine
OIV.ImageViz.EnginesSoImageVizEngine
OIV.ImageViz.Engines.MathematicalMorphology.GeodesicTransformationsSoRegionalExtremaProcessing
Namespace: OIV.ImageViz.Engines.MathematicalMorphology.GeodesicTransformations
Assembly: OIV.ImageViz (in OIV.ImageViz.dll) Version: 2023.1.3.0 (2023.1.3)
SyntaxThe SoRegionalExtremaProcessing type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | SoRegionalExtremaProcessing | Constructor. |
Methods| Name | Description | |
|---|---|---|
| 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. |
Properties| Name | Description | |
|---|---|---|
 | computeMode | Select the compute Mode (2D or 3D or AUTO) . |
| inImage | The input image. |
| IsDisposable | ISafeDisposable interface implementation.
(Inherited from SoDisposable.) |
| neighborhood3d | In 3D configuration (see OIV.ImageViz.Engines.MathematicalMorphology.GeodesicTransformations.SoRegionalExtremaProcessing.computeMode), the neighborhood connectivity defines the connectivity considered for processing adjacent voxels. |
| outBinaryImage | The output binary image. |
| regionalOperator | Select the operator. |
| UserData |
Gets or sets the user data to be contained by the field container.
(Inherited from SoFieldContainer.) |
Events| 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. |
RemarksThe OIV.ImageViz.Engines.MathematicalMorphology.GeodesicTransformations.SoRegionalExtremaProcessing engine computes the regional or relative fast maxima and minima in a grayscale image, 
, and displays the result in a binary image, 
. This algorithm is based on [1] and uses a recursive method combined with a geodesic propagation. To avoid getting too many regions in the output image, input should first be smoothed with a low-pass filter or with the dual numerical reconstruction algorithm.
Case Minima
This case of use computes the regional or relative minima in a grayscale image and creates a binary image containing these minima.
A regional minimum 
is a set of connected pixels such that:
Pixels belonging to
have the same intensity 
.Pixels connected to
, but not belonging to (neighbors), have an intensity greater than .
Case Maxima
This engine computes the regional or relative maxima in a grayscale image and creates a binary image containing these maxima.
A regional maximum is a set of connected pixels such that:
Pixels belonging to
have the same intensity .Pixels connected to
, but not belonging to (neighbors), have an intensity greater than .
[1] B. La. "Recursive Algorithms in Mathematical Morphology." In Acta Stereologica. Vol. 6/III, pp 691-696, Caen, France, Sept. 1987. 7th International Congress For Stereology.
FILE FORMAT/DEFAULT
RegionalExtremaProcessing {
| computeMode | MODE_AUTO |
| neighborhood3d | CONNECTIVITY_26 |
| regionalOperator | MAXIMA |
| inImage | NULL |
Library references: fastmaxima fastminima
See Also