BRISC::Core::GlobalCoOccurrence Class Reference

Provides methods for calculating Haralick features on LIDCNodule objects. More...

List of all members.

Public Member Functions
CombineCoOccurrence	PerformCoOccurrence (int[,] mOriginal, int nNoValueIndicate, int numDistance)
	Calculate all co-occurrence matrices.
ArrayList	getCoOccurrenceHeader (int[,] mOriginal, int nNoValueIndicate)
	Get a list of unique values in the matrix (these will become the labels for the rows and columns of the co-occurrence matrix).
Static Public Member Functions
static void	PerformHaralick (LIDCNodule nodule)
	Calculates Haralick co-occurrence features for a nodule (saves the data in the structure).
Static Public Attributes
static string[]	featureNames
	List of "official" Haralick feature names.
Private Member Functions
double[,]	getCoOccurrence (int[,] mOriginal, ArrayList arrHeader, int direction, int distance)
	Calculate one co-occurrence matrix and normalize it.
Static Private Attributes
static int	numDirs = 4
	Number of directions: (0, 45, 90, 135 degrees).
static int	numDists = 4
	Number of distances: (1, 2, 3 and 4).
static int	numFeats = featureNames.Length
	Number of Haralick features.

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Detailed Description

Provides methods for calculating Haralick features on LIDCNodule objects.

This class contains all the "heavy-lifting" for co-occurrence and Haralick feature calculation. To calculate the Haralick features for a nodule, you need the primary information about it (series, slice, nodule ID, etc) and the segmented DICOM image. Then, create an LIDCNodule object for the nodule and call PerformHaralick() on that nodule. This will fill the Haralick data member with all of the feature information.

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Member Function Documentation

double [,] BRISC::Core::GlobalCoOccurrence::getCoOccurrence	(	intmOriginal	[,],
		ArrayList	arrHeader,
		int	direction,
		int	distance
	)			[inline, private]

Calculate one co-occurrence matrix and normalize it.

Parameters:

	mOriginal	Original two-dimensional matrix
	arrHeader	List of unique matrix values
	direction	Direction (1=0,2=45,3=90,4=135 degrees)
	distance	Displacement

Returns:

Normalized co-occurrence matrix

ArrayList BRISC::Core::GlobalCoOccurrence::getCoOccurrenceHeader	(	intmOriginal	[,],
		int	nNoValueIndicate
	)			[inline]

Get a list of unique values in the matrix (these will become the labels for the rows and columns of the co-occurrence matrix).

Parameters:

	mOriginal	Original two-dimensional matrix
	nNoValueIndicate	Background signal value

Returns:

ArrayList of unique ints

CombineCoOccurrence BRISC::Core::GlobalCoOccurrence::PerformCoOccurrence	(	int	mOriginal[,],
		int	nNoValueIndicate,
		int	numDistance
	)			[inline]

Calculate all co-occurrence matrices.

Parameters:

	mOriginal	Original two-dimensional matrix
	nNoValueIndicate	Background signal value
	numDistance	Number of displacements to use

Returns:

CombineCoOccurrence structure with all matrices

static void BRISC::Core::GlobalCoOccurrence::PerformHaralick

(

LIDCNodule

nodule

)

[inline, static]

Calculates Haralick co-occurrence features for a nodule (saves the data in the structure).

Parameters:

nodule

Nodule of interest

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

• C:/Documents and Settings/mlam/My Documents/svn-sf-main/src/Core/GlobalCoOccurrence.cs

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