| SoDegreeOfAnisotropyQuantification Class |
OIV.ImageViz.Engines.ImageAnalysis.Morphometry.SoDegreeOfAnisotropyQuantification engine.
Inheritance HierarchyOIV.InventorSoNetBase
OIV.InventorSoDisposable
OIV.Inventor.MiscSoBase
OIV.Inventor.FieldsSoFieldContainer
OIV.Inventor.EnginesSoEngine
OIV.ImageViz.EnginesSoImageVizEngine
OIV.ImageViz.Engines.ImageAnalysis.MorphometrySoDegreeOfAnisotropyQuantification
Namespace: OIV.ImageViz.Engines.ImageAnalysis.Morphometry
Assembly: OIV.ImageViz (in OIV.ImageViz.dll) Version: 2023.1.3.0 (2023.1.3)
SyntaxThe SoDegreeOfAnisotropyQuantification type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | SoDegreeOfAnisotropyQuantification | 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) . |
| inBinaryImage | The input binary image. |
| interceptDistance | The distance between two intercept lines. |
| IsDisposable | ISafeDisposable interface implementation.
(Inherited from SoDisposable.) |
| outResult | The output measure result. |
| 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.ImageAnalysis.Morphometry.SoDegreeOfAnisotropyQuantification engine measures a 3D symmetry
For an introduction, see section OIV.ImageViz.Engines.ImageAnalysis.Morphometry.
This engine computes a measure of 3D symmetry. It is a good indicator to detect structural alignments along particular directional axis. This engine uses mean intercept length and eigen value analysis.
Mean intercept length analysis allows the user to measure isotropy of a structure. It proceeds sending a set of oriented ray through the binarised 3D image volume. For each ray, the number of objects encountered is counted. A set of discreet angles are processed as described and for each one an averaged is done by using a regularly spaced grid of rays. The OIV.ImageViz.Engines.ImageAnalysis.Morphometry.SoDegreeOfAnisotropyQuantification.interceptDistance field is the distance between two lines intercept. The pitch angle is fixed at 10 degrees (not radians).
A classical eigen value analysis of this cloud of values (mean of number of intersect in function of angle) is then done. This analysis allows one to extract a minimal and a maximal eigen value. The closest these values are, the less the structural anisotropy is. Indeed maximum and minimum eigen values equality means that their is no privileged structural direction.
Degree of anisotropy is 0 for total isotropy and 1 for total anisotropy.
FILE FORMAT/DEFAULT
DegreeOfAnisotropyQuantification {
| computeMode | MODE_AUTO |
| inBinaryImage | NULL |
| interceptDistance | 3 |
Library references: anisotropy_degree
See Also