SoLocalAdaptiveThresholdProcessing Class Reference
[Binarization]

SoLocalAdaptiveThresholdProcessing engine More...

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

Inheritance diagram for SoLocalAdaptiveThresholdProcessing:

List of all members.

Public Types
enum	ComparisonCriterion {   GREATER_OR_EQUAL = 0,   LESS_OR_EQUAL = 1 }
enum	ThresholdMode {   MULTIPLICATIVE = 0,   ADDITIVE = 1 }
Public Member Functions
	SoLocalAdaptiveThresholdProcessing ()
Public Attributes
SoSFEnum	computeMode
SoSFVec3i32	kernelSize
SoSFImageDataAdapter	inImage
SoSFFloat	threshold
SoSFEnum	comparisonCriterion
SoSFEnum	thresholdMode
SoImageVizEngineOutput < SoSFImageDataAdapter, SoImageDataAdapter * >	outBinaryImage

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Detailed Description

SoLocalAdaptiveThresholdProcessing engine

The SoLocalAdaptiveThresholdProcessing engine performs a binarization of a grayscale image based on the mean intensity of a sliding window centered around each voxel.

Each voxel value is compared to the mean intensity of its local window. The corresponding voxel in the binary output depends on the threshold value, mode, and comparison criterion.

In additive mode with comparison criterion set to GREATER_OR_EQUAL, the output is set to 1 if .

In multiplicative mode with comparison criterion set to GREATER_OR_EQUAL, the output is set to 1 if .

For example to select voxels lower than 90% of their local mean, set threshold field to 0.9, comparisonCriterion field to LESS_OR_EQUAL and thresholdMode field to MULTIPLICATIVE.

SEE ALSO

: SoAdaptiveThresholdingProcessing, SoAutoThresholdingProcessing.

FILE FORMAT/DEFAULT

LocalAdaptiveThresholdProcessing {

computeMode	MODE_AUTO
kernelSize	30 30 30
inImage	NULL
threshold	1.0f
comparisonCriterion	GREATER_OR_EQUAL
thresholdMode	MULTIPLICATIVE

}

Library references: local_adaptive_threshold2d local_adaptive_threshold3d

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Member Enumeration Documentation

enum SoLocalAdaptiveThresholdProcessing::ComparisonCriterion

Enumerator:

GREATER_OR_EQUAL	All voxels whose value is greater than or equal to the local threshold value, are set to 1 otherwise they are set to 0.
LESS_OR_EQUAL	All voxels whose value is less than or equal to the local threshold value, are set to 1 otherwise they are set to 0.

enum SoLocalAdaptiveThresholdProcessing::ThresholdMode

Enumerator:

MULTIPLICATIVE	The local threshold is equal to , where value is an input parameter and is the mean of a window centered on x.
ADDITIVE	The local threshold is equal to , where value is an input parameter and is the mean of a window centered on x.

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Constructor & Destructor Documentation

SoLocalAdaptiveThresholdProcessing::SoLocalAdaptiveThresholdProcessing

(

)

Constructor.

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Member Data Documentation

SoSFEnum SoLocalAdaptiveThresholdProcessing::comparisonCriterion

Select the comparison test to perform between image and value.

Use enum ComparisonCriterion. Default is GREATER_OR_EQUAL

SoSFEnum SoLocalAdaptiveThresholdProcessing::computeMode

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

Default is MODE_AUTO

SoSFImageDataAdapter SoLocalAdaptiveThresholdProcessing::inImage

Input image.

The type of image can be integer or float Default value is NULL. Supported types include: grayscale image.

SoSFVec3i32 SoLocalAdaptiveThresholdProcessing::kernelSize

The kernel size in each direction for computing the mean intensity.

Default value is SbVec3i32(30,30,30)

SoImageVizEngineOutput<SoSFImageDataAdapter,SoImageDataAdapter*> SoLocalAdaptiveThresholdProcessing::outBinaryImage

The output binary image.

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

SoSFFloat SoLocalAdaptiveThresholdProcessing::threshold

Enter a floating value Default value is 1.0f.

SoSFEnum SoLocalAdaptiveThresholdProcessing::thresholdMode

Local threshold mode Use enum ThresholdMode.

Default is MULTIPLICATIVE

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

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