SoHysteresisThresholdingProcessing Class Reference
[Binarization]

SoHysteresisThresholdingProcessing image filter More...

#include <ImageViz/Engines/ImageSegmentation/Binarization/SoHysteresisThresholdingProcessing.h>

Inheritance diagram for SoHysteresisThresholdingProcessing:

List of all members.

Public Member Functions
	SoHysteresisThresholdingProcessing ()
Public Attributes
SoSFEnum	computeMode
SoSFImageDataAdapter	inImage
SoSFVec2f	thresholdLevel
SoSFInt32	maxLength
SoImageVizEngineOutput < SoSFImageDataAdapter, SoImageDataAdapter * >	outBinaryImage

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Detailed Description

SoHysteresisThresholdingProcessing image filter

The SoHysteresisThresholdingProcessing engine computes a SoHysteresisThresholdingProcessing threshold.

The SoHysteresisThresholdingProcessing uses a SoHysteresisThresholdingProcessing loop to provide a more connected threshold result.

Two gray level values and and ( thresholds parameter) are specified. The output is given by:

• If , the point is in the and is preserved:
• If , the point is in the :
• If , the point is in the . The point is preserved if connected to a retained area (), or is rejected if not ().

The Figure shows the result of a lower bound threshold with value and . Figure is the result of an SoHysteresisThresholdingProcessing, where the points in the fuzzy area not connected with points in the retained area are rejected.

1-D function

Low and high thresholds

SoHysteresisThresholdingProcessing, fuzzy area rejected

This command can be used after an edge detection, which generates, as well as edges, a lot of noise. True edges have a higher chance to be connected to a retained area than pixels corresponding to noise.

SEE ALSO

SoAutoThresholdingProcessing.

FILE FORMAT/DEFAULT

HysteresisThresholdingProcessing {

computeMode	MODE_AUTO
inImage	NULL
thresholdLevel	255.0f 128.0f
maxLength	1

}

Library references: hysteresis

See related examples:

Hessian

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Constructor & Destructor Documentation

SoHysteresisThresholdingProcessing::SoHysteresisThresholdingProcessing

(

)

Constructor.

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Member Data Documentation

SoSFEnum SoHysteresisThresholdingProcessing::computeMode

Select the compute Mode (2D or 3D or AUTO) Use enum ComputeMode.

Default is MODE_AUTO

SoSFImageDataAdapter SoHysteresisThresholdingProcessing::inImage

The input image.

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

SoSFInt32 SoHysteresisThresholdingProcessing::maxLength

The maximum length allowed for pixel in fuzzy zone (0:until convergence).

Default value is 1.

SoImageVizEngineOutput<SoSFImageDataAdapter,SoImageDataAdapter*> SoHysteresisThresholdingProcessing::outBinaryImage

The output binary image.

Default value is NULL. Supported types include: binary image.

SoSFVec2f SoHysteresisThresholdingProcessing::thresholdLevel

The low and high threshold levels.

Default value is SbVec2f(255.0f,128.0f).

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The documentation for this class was generated from the following file:

• ImageViz/Engines/ImageSegmentation/Binarization/SoHysteresisThresholdingProcessing.h