com.openinventor.imageviz.engines.edgedetection.edgemarking

Class SoCannyEdgeProcessing

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.SoCannyEdgeProcessing

All Implemented Interfaces:

SafeDisposable

public class SoCannyEdgeProcessing
extends SoImageVizEngine

SoCannyEdgeProcessing This engine models the Canny edge detection workflow which is composed of the following steps: 1) Gaussian filtering
2) Gradient computation
3) Non maximum suppression in the gradient direction

The algorithm also provides estimated parameters for applying an hysteresis thresholding on the output image which represents the gradient local maxima.

See also:

SoGaussianBlurFilterProcessing, SoGradientOperatorProcessing2d, SoGradientOperatorProcessing3d, SoGradientLocalMaximaProcessing2d, SoGradientLocalMaximaProcessing3d, SoHysteresisThresholdingProcessing.

File format/default:

CannyEdgeProcessing {

computeMode	MODE_AUTO
inImage	NULL
standardDeviation	1.0f 1.0f 1.0f

}

Library references:

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SoCannyEdgeProcessing.SbCannyEdgeDetectionDetail Results details of canny edge detection workflow.

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 The input graylevel image.
SoImageVizEngineOutput<SoSFImageDataAdapter,SoImageDataAdapter>	outImage Output edge image.
SoImageVizEngineAnalysisOutput<SoCannyEdgeProcessing.SbCannyEdgeDetectionDetail>	outResult The thresholding results.
SoSFVec3f	standardDeviation Input gaussian kernel size.

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
SoCannyEdgeProcessing() 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

inImage

public final SoSFImageDataAdapter inImage

The input graylevel image. Default value is null.

standardDeviation

public final SoSFVec3f standardDeviation

Input gaussian kernel size. Default value is (1.0,1.0,1.0).

outImage

public final SoImageVizEngineOutput<SoSFImageDataAdapter,SoImageDataAdapter> outImage

Output edge image. Output of the canny workflow.

outResult

public final SoImageVizEngineAnalysisOutput<SoCannyEdgeProcessing.SbCannyEdgeDetectionDetail> outResult

The thresholding results. Default value is NULL.

Constructor Detail

SoCannyEdgeProcessing

public SoCannyEdgeProcessing()

Constructor.