SoGradientLocalMaximaProcessing2d Class Reference
[Edge Marking]

SoGradientLocalMaximaProcessing2d engine More...

#include <ImageViz/Engines/EdgeDetection/EdgeMarking/SoGradientLocalMaximaProcessing2d.h>

Inheritance diagram for SoGradientLocalMaximaProcessing2d:

List of all members.

Public Member Functions
	SoGradientLocalMaximaProcessing2d ()
Public Attributes
SoSFImageDataAdapter	inGradientXImage
SoSFImageDataAdapter	inGradientYImage
SoSFImageDataAdapter	inAmplitudeImage
SoImageVizEngineOutput < SoSFImageDataAdapter, SoImageDataAdapter * >	outImage

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Detailed Description

SoGradientLocalMaximaProcessing2d engine

The SoGradientLocalMaximaProcessing2d engine suppresses the non-local maxima of the gradient amplitude.

For an introduction, see:

• section Edge Detection
• Introduction to Edge Marking

The SoGradientLocalMaximaProcessing2d engine suppresses the non-local maxima of the gradient amplitude. For each pixel of gradient image, gray level values within the neighborhood in the direction of the gradient are computed (given by X and Y gradients). If this value is greater than all of its neighbors, it is kept, otherwise it is set to 0. This module eliminates some noise effects. It is very useful after applying the module SoGradientOperatorProcessing2d. The output edges are one pixel thickness edges. It is then possible to perform a SoHysteresisThresholdingProcessing.

SEE ALSO

SoRidgeDetectionProcessing

FILE FORMAT/DEFAULT

GradientLocalMaximaProcessing2d {

inGradientXImage	NULL
inGradientYImage	NULL
inAmplitudeImage	NULL

}

Library references: lmaxima

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Constructor & Destructor Documentation

SoGradientLocalMaximaProcessing2d::SoGradientLocalMaximaProcessing2d

(

)

Constructor.

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Member Data Documentation

SoSFImageDataAdapter SoGradientLocalMaximaProcessing2d::inAmplitudeImage

The gradient amplitude input image.

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

SoSFImageDataAdapter SoGradientLocalMaximaProcessing2d::inGradientXImage

The input X-gradient image.

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

SoSFImageDataAdapter SoGradientLocalMaximaProcessing2d::inGradientYImage

The input Y-gradient image.

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

SoImageVizEngineOutput<SoSFImageDataAdapter,SoImageDataAdapter*> SoGradientLocalMaximaProcessing2d::outImage

The output image.

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

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

• ImageViz/Engines/EdgeDetection/EdgeMarking/SoGradientLocalMaximaProcessing2d.h