SoRegionalExtremaProcessing Class Reference
[Geodesic Transformations]

SoRegionalExtremaProcessing engine More...

#include <ImageViz/Engines/MathematicalMorphology/GeodesicTransformations/SoRegionalExtremaProcessing.h>

Inheritance diagram for SoRegionalExtremaProcessing:

List of all members.

Public Types
enum	RegionalOperator {   MINIMA = 0,   MAXIMA = 1 }
Public Member Functions
	SoRegionalExtremaProcessing ()
Public Attributes
SoSFEnum	computeMode
SoSFEnum	neighborhood3d
SoSFEnum	regionalOperator
SoSFImageDataAdapter	inImage
SoImageVizEngineOutput < SoSFImageDataAdapter, SoImageDataAdapter * >	outBinaryImage

---

Detailed Description

SoRegionalExtremaProcessing engine

The SoRegionalExtremaProcessing engine computes the regional or relative fast maxima and minima in a grayscale image, , and displays the result in a binary image, . This algorithm is based on [1] and uses a recursive method combined with a geodesic propagation. To avoid getting too many regions in the output image, input should first be smoothed with a low-pass filter or with the dual numerical reconstruction algorithm.

Case Minima

This case of use computes the regional or relative minima in a grayscale image and creates a binary image containing these minima.

A regional minimum is a set of connected pixels such that:

• Pixels belonging to have the same intensity .
• Pixels connected to , but not belonging to (neighbors), have an intensity greater than .

Figure 1: Examples of regional minima in 1D.

Case Maxima

This engine computes the regional or relative maxima in a grayscale image and creates a binary image containing these maxima.

A regional maximum is a set of connected pixels such that:

• Pixels belonging to have the same intensity .
• Pixels connected to , but not belonging to (neighbors), have an intensity greater than .

Figure 2: Examples of regional maxima in 1 and 2D.

[1] B. Laÿ. "Recursive Algorithms in Mathematical Morphology." In Acta Stereologica. Vol. 6/III, pp 691-696, Caen, France, Sept. 1987. 7th International Congress For Stereology.

SEE ALSO

SoGrayscaleResconstructionProcessing.

FILE FORMAT/DEFAULT

RegionalExtremaProcessing {

computeMode	MODE_AUTO
neighborhood3d	CONNECTIVITY_26
regionalOperator	MAXIMA
inImage	NULL

}

Library references: fastmaxima fastminima

---

Member Enumeration Documentation

enum SoRegionalExtremaProcessing::RegionalOperator

Enumerator:

MINIMA	This mode implements case Minima.
MAXIMA	This mode implements case Maxima.

---

Constructor & Destructor Documentation

SoRegionalExtremaProcessing::SoRegionalExtremaProcessing

(

)

Constructor.

---

Member Data Documentation

SoSFEnum SoRegionalExtremaProcessing::computeMode

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

Default is MODE_AUTO

SoSFImageDataAdapter SoRegionalExtremaProcessing::inImage

The input image.

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

SoSFEnum SoRegionalExtremaProcessing::neighborhood3d

In 3D configuration (see computeMode), the neighborhood connectivity defines the connectivity considered for processing adjacent voxels.

Use enum Neighborhood3d. Default is CONNECTIVITY_26.

SoImageVizEngineOutput<SoSFImageDataAdapter,SoImageDataAdapter*> SoRegionalExtremaProcessing::outBinaryImage

The output binary image.

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

SoSFEnum SoRegionalExtremaProcessing::regionalOperator

Select the operator.

Use enum RegionalOperator. Default is MAXIMA

---

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

• ImageViz/Engines/MathematicalMorphology/GeodesicTransformations/SoRegionalExtremaProcessing.h