com.openinventor.imageviz.engines.edgedetection.gradient

Class SoRadialGradientCenteredProcessing2d

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.gradient.SoRadialGradientCenteredProcessing2d

All Implemented Interfaces:

SafeDisposable

public class SoRadialGradientCenteredProcessing2d
extends SoImageVizEngine

SoRadialGradientCenteredProcessing2d engine The SoRadialGradientCenteredProcessing2d engine performs a projected gradient computing the directional vector.

For an introduction, see:

• section Edge Detection
• section Images Filters
• Introduction to Gradient

In the continuous 2-D case, for a given pixel and knowing the gradient and , the projected gradient of an image is defined along the unitary vector , as :

The SoRadialGradientCenteredProcessing2d performs a projected gradient computing the directional vector from a single given center. For all pixel in the image, is the center.

It is a common way to get the recursive gradient in X and Y directions for input image and , using a spread of 60.

The projected resulting gradient image is the Normal Gradient. Simultaneously, the tangential gradient could be computed with the option GRADIENT_NORMAL_TANGENTIAL of ProjectionMode

See also:

SoGradientOperatorProcessing2d, SoRadialGradientContourProcessing2d, SoRadialGradientLabelProcessing2d.

File format/default:

RadialGradientCenteredProcessing2d {

inGradientXImage	NULL
inGradientYImage	NULL
projectionCenter	0 0
projectionMode	GRADIENT_NORMAL

}

Library references: pgradient_centered2d

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SoRadialGradientCenteredProcessing2d.ProjectionModes

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
static int	GRADIENT_NORMAL Deprecated. Use SoRadialGradientCenteredProcessing2d.ProjectionModes.GRADIENT_NORMAL instead.
static int	GRADIENT_NORMAL_TANGENTIAL Deprecated. Use SoRadialGradientCenteredProcessing2d.ProjectionModes.GRADIENT_NORMAL_TANGENTIAL instead.
SoSFImageDataAdapter	inGradientXImage The input X-gradient image.
SoSFImageDataAdapter	inGradientYImage The input Y-gradient image.
SoImageVizEngineOutput<SoSFImageDataAdapter,SoImageDataAdapter>	outNormalImage The output normal gradient image.
SoImageVizEngineOutput<SoSFImageDataAdapter,SoImageDataAdapter>	outTangentImage The output tangent gradient image.
SoSFVec2i32	projectionCenter The center of projection coordinates.
SoSFEnum<SoRadialGradientCenteredProcessing2d.ProjectionModes>	projectionMode Select the output images mode.

Fields inherited from class com.openinventor.imageviz.engines.SoImageVizEngine

CONNECTIVITY_18, CONNECTIVITY_26, CONNECTIVITY_6, MODE_2D, MODE_3D, MODE_AUTO, onBegin, onEnd, onProgress

Fields inherited from class com.openinventor.inventor.Inventor

VERBOSE_LEVEL, ZeroHandle

Constructor Summary

Constructors

Constructor and Description
SoRadialGradientCenteredProcessing2d() 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, getEXTERNPROTO, getName, getPROTO, isDisposable, isSynchronizable, setName, setSynchronizable, touch

Methods inherited from class com.openinventor.inventor.Inventor

getAddress, getNativeResourceHandle, startInternalThreads, stopInternalThreads

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

GRADIENT_NORMAL

@Deprecated
public static final int GRADIENT_NORMAL

Deprecated. Use SoRadialGradientCenteredProcessing2d.ProjectionModes.GRADIENT_NORMAL instead.

GRADIENT_NORMAL_TANGENTIAL

@Deprecated
public static final int GRADIENT_NORMAL_TANGENTIAL

Deprecated. Use SoRadialGradientCenteredProcessing2d.ProjectionModes.GRADIENT_NORMAL_TANGENTIAL instead.

inGradientXImage

public final SoSFImageDataAdapter inGradientXImage

The input X-gradient image. Default value is NULL. Supported types include: grayscale color image.

inGradientYImage

public final SoSFImageDataAdapter inGradientYImage

The input Y-gradient image. Default value is NULL. Supported types include: grayscale color image.

projectionCenter

public final SoSFVec2i32 projectionCenter

The center of projection coordinates. Default value is SbVec2i32(0,0).

projectionMode

public final SoSFEnum<SoRadialGradientCenteredProcessing2d.ProjectionModes> projectionMode

Select the output images mode. . Default is GRADIENT_NORMAL

outNormalImage

public final SoImageVizEngineOutput<SoSFImageDataAdapter,SoImageDataAdapter> outNormalImage

The output normal gradient image. Default value is NULL. Supported types include: grayscale binary label color image.

outTangentImage

public final SoImageVizEngineOutput<SoSFImageDataAdapter,SoImageDataAdapter> outTangentImage

The output tangent gradient image. Default value is NULL. Supported types include: grayscale binary label color image.

Constructor Detail

SoRadialGradientCenteredProcessing2d

public SoRadialGradientCenteredProcessing2d()

Constructor.