com.openinventor.imageviz.engines.edgedetection.edgemarking

Class SoGaussianGradientTensorProcessing2d

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.edgemarking.SoGaussianGradientTensorProcessing2d

All Implemented Interfaces:

SafeDisposable

public class SoGaussianGradientTensorProcessing2d
extends SoImageVizEngine

SoGaussianGradientTensorProcessing2d engine computes the structure tensor. The SoGradientOperatorProcessing2d engine computes the structure tensor of the input image by convolving the input image with the square first order derivatives of a Gaussian Kernel.

For instance, , .

This filter provides an output spectral image where each channel represents a product of two partial derivative set in the following order , , .

In order to extract the eigenvalues or vectors of the result image the SoEigenDecompositionProcessing2d command can be applied on the spectral image output.

See also:

SoEigenDecompositionProcessing2d, SoHessianMatrixProcessing2d, SoEigenvaluesToStructurenessProcessing2d.

File format/default:

GaussianGradientTensorProcessing2d {

inImage	NULL
standardDeviation	3.f 3.f

}

Library references: GaussianGradientTensor2D

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 and Description
SoSFImageDataAdapter	inImage inImage Default value is NULL.
SoImageVizEngineOutput<SoSFImageDataAdapter,SoImageDataAdapter>	outTensorImage outTensorImage Default value is NULL.
SoSFVec2f	standardDeviation The standard deviation for each direction (X, Y) of the Gaussian Kernel that is used for computing first order derivatives.

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 and Description
SoGaussianGradientTensorProcessing2d() 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

inImage Default value is NULL. Supported types include: grayscale color image.

standardDeviation

public final SoSFVec2f standardDeviation

The standard deviation for each direction (X, Y) of the Gaussian Kernel that is used for computing first order derivatives. Each value must be greater than or equal to 0.1. Default value is SbVec2f( 3.f, 3.f ).

outTensorImage

public final SoImageVizEngineOutput<SoSFImageDataAdapter,SoImageDataAdapter> outTensorImage

outTensorImage Default value is NULL. Supported types include: grayscale binary label color image.

Constructor Detail

SoGaussianGradientTensorProcessing2d

public SoGaussianGradientTensorProcessing2d()

Constructor.