SoHessianMatrixProcessing2d

java.lang.Object
- com.openinventor.inventor.Inventor
- - com.openinventor.inventor.misc.SoBase
  - - com.openinventor.inventor.fields.SoFieldContainer
    - - com.openinventor.inventor.engines.SoEngine
      - com.openinventor.imageviz.engines.SoImageVizEngine
        
        com.openinventor.imageviz.engines.edgedetection.otherderivatives.SoHessianMatrixProcessing2d

All Implemented Interfaces:

SafeDisposable
```
@Deprecated(since="2023.2")
public class SoHessianMatrixProcessing2d
extends SoImageVizEngine
```
Deprecated.
As of Open Inventor 2023.2. ImageViz API is replaced by the new ImageDev toolkit.
SoHessianMatrixProcessing2d engine computes the local Hessian matrix. The SoHessianMatrixProcessing2d engine computes the local Hessian matrix by convolving the input image with the 2nd order derivatives of a Gaussian Kernel.
Each channel of the Hessian matrix represents a second order partial derivative.
For instance, , .
This filter provides an output spectral image where each channel represents a 2nd order derivative set in the following order , , .
In order to extract the eigenvalues or vectors of the Hessian image the SoEigenDecompositionProcessing2d can be applied on the spectral image output.
SEE ALSO
SoGaussianDerivativeProcessing, SoEigenDecompositionProcessing2d, SoHessianMatrixProcessing3d
File format/default:
HessianMatrixProcessing2d {
}

Library references: hessianmatrix

Nested Class Summary
- Nested classes/interfaces inherited from class com.openinventor.imageviz.engines.SoImageVizEngine
  SoImageVizEngine.ComputeModes, SoImageVizEngine.EventArg, SoImageVizEngine.Neighborhood3ds
- Nested classes/interfaces inherited from class com.openinventor.inventor.Inventor
  Inventor.ConstructorCommand

Field Summary

Fields
Modifier and Type	Field	Description
`SoSFImageDataAdapter`	`inImage`	Deprecated. Input image.
`SoImageVizEngineOutput<SoSFImageDataAdapter,SoImageDataAdapter>`	`outSymmetricMatrixImage`	Deprecated. Output image.
`SoSFVec2f`	`standardDeviation`	Deprecated. Sigma for each direction (X, Y).

Fields inherited from class com.openinventor.imageviz.engines.SoImageVizEngine
onBegin, onEnd, onProgress

Fields inherited from class com.openinventor.inventor.Inventor
VERBOSE_LEVEL, ZeroHandle

Constructor Summary

Constructors
Constructor Description

SoHessianMatrixProcessing2d()
Deprecated.

Constructor.

Method Summary
- Methods inherited from class com.openinventor.imageviz.engines.SoImageVizEngine
  abortEvaluate, isEvaluating, startEvaluate, waitEvaluate
- Methods inherited from class com.openinventor.inventor.engines.SoEngine
  copy, getByName, getOutput, getOutputName
- Methods inherited from class com.openinventor.inventor.fields.SoFieldContainer
  copyFieldValues, copyFieldValues, enableNotify, fieldsAreEqual, get, getAllFields, getEventIn, getEventOut, getField, getFieldName, hasDefaultValues, isNotifyEnabled, set, setToDefaults
- Methods inherited from class com.openinventor.inventor.misc.SoBase
  dispose, getName, isDisposable, isSynchronizable, setName, setSynchronizable, touch
- Methods inherited from class com.openinventor.inventor.Inventor
  getNativeResourceHandle
- Methods inherited from class java.lang.Object
  equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - inImage
```
public final SoSFImageDataAdapter inImage
```
    Deprecated.
    
    Input image. Default value is NULL. Supported types include: grayscale image.
  - standardDeviation
```
public final SoSFVec2f standardDeviation
```
    Deprecated.
    
    Sigma for each direction (X, Y). Each value must be greater than or equal to 0.1. Default value is SbVec2f(1.0f,1.0f).
  - outSymmetricMatrixImage
```
public final SoImageVizEngineOutput<SoSFImageDataAdapter,SoImageDataAdapter> outSymmetricMatrixImage
```
    Deprecated.
    
    Output image. Default value is NULL. Supported types include: grayscale image.
- Constructor Detail
  - SoHessianMatrixProcessing2d
```
public SoHessianMatrixProcessing2d()
```
    Deprecated.
    
    Constructor.