| SoMedianFilterProcessing Class |
OIV.ImageViz.Engines.ImageFiltering.SmoothingAndDenoising.SoMedianFilterProcessing engine.
Inheritance HierarchyOIV.InventorSoNetBase
OIV.InventorSoDisposable
OIV.Inventor.MiscSoBase
OIV.Inventor.FieldsSoFieldContainer
OIV.Inventor.EnginesSoEngine
OIV.ImageViz.EnginesSoImageVizEngine
OIV.ImageViz.Engines.ImageFiltering.SmoothingAndDenoisingSoMedianFilterProcessing
Namespace: OIV.ImageViz.Engines.ImageFiltering.SmoothingAndDenoising
Assembly: OIV.ImageViz (in OIV.ImageViz.dll) Version: 2023.1.3.0 (2023.1.3)
SyntaxThe SoMedianFilterProcessing type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | SoMedianFilterProcessing | 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) . |
| elementSize | The half size of the structuring element. |
| inImage | The input grayscale image. |
| IsDisposable | ISafeDisposable interface implementation.
(Inherited from SoDisposable.) |
| kernelMode | The shape of the 3D neighborhood. |
| neighborhood3d | In 3D configuration (see OIV.ImageViz.Engines.ImageFiltering.SmoothingAndDenoising.SoMedianFilterProcessing.computeMode), the neighborhood connectivity defines the connectivity considered for processing adjacent voxels. |
| outImage | The output image. |
| 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.ImageFiltering.SmoothingAndDenoising.SoMedianFilterProcessing engine smoothes the image using morphological operators.
For an introduction to image filters, see section OIV.ImageViz.Engines.ImageFiltering.
This module uses morphological operators to set the pixel value to the median for the defined neighborhood. The OIV.ImageViz.Engines.ImageFiltering.SmoothingAndDenoising.SoMedianFilterProcessing usually works well when images contain non-Gaussian noise and/or very small artifacts. It does not cause blurring to the same extend as the OIV.ImageViz.Engines.ImageFiltering.SmoothingAndDenoising.SoBoxFilterProcessing, but does take considerably longer to execute.
The gray levels of all pixels in the neighborhood are sorted from the smallest value to the largest one. The central pixel in the sort is then the median value, i.e. the value for which there are as many lower gray levels as higher ones. The process may be iterated.
To explain this, consider the array:
The sorted gray level values will be: 12 14 14 15 17 18 19 20. The median value is 16, and it will be the value of the output pixel.
The Median filtering considers the lines and then the columns.
FILE FORMAT/DEFAULT
MedianFilterProcessing {
| computeMode | MODE_AUTO |
| neighborhood3d | CONNECTIVITY_26 |
| inImage | NULL |
| elementSize | 3 |
| kernelMode | CUBE |
Library references: medianfilter medianfilter3d
See Also