kmeans::TextureStat Class Reference

List of all members.

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Detailed Description

Stores statistics associated with a pixel in an image.

This class satisfies the requirements of KSSegment.

See also:

KSSegment

Author:

Lakshman

Version:

Id

TextureStat.h,v 1.3 2009/06/02 20:17:50 lakshman Exp

Public Types
	MEAN
	The mean in the neighborhood.
	VAR
	Local variance.
	CVAR
	Coefficient of variation.
	SKEW
	Skewness.
	KURT
	Kurtosis.
	CONT
	Contrast.
	HOM
	Homogeneity.
	NumFeatures
	The total number of features.
enum	Statistics {   MEAN, VAR, CVAR, SKEW,   KURT, CONT, HOM, NumFeatures }
Public Member Functions
float	get_val (size_t index) const
	index should be one of the Statistics enums (< NumFeatures).
void	set_val (size_t index, float val)
	index should be one of the Statistics enums (< NumFeatures).
	TextureStat ()
	Initializes all the values.
Static Public Member Functions
static float	get_wt (size_t index)
	Returns the weight that should be given to the ith Statistic.
static void	scale (ImageAttr< TextureStat > &img)
	Scales all the values such that they lie in the range 0 to 1.
static void	compute (const LImage< int > &img, ImageAttr< TextureStat > *tobe_set, bool normalize=true, size_t neighborhood_size=7)
	Computes the texture of this image and sets the ImageAttr passed in.

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Member Enumeration Documentation

enum kmeans::TextureStat::Statistics

Enumerator:

MEAN	The mean in the neighborhood.
VAR	Local variance.
CVAR	Coefficient of variation.
SKEW	Skewness.
KURT	Kurtosis.
CONT	Contrast.
HOM	Homogeneity.
NumFeatures	The total number of features.

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Constructor & Destructor Documentation

kmeans::TextureStat::TextureStat

(

)

Initializes all the values.

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Member Function Documentation

static void kmeans::TextureStat::compute	(	const LImage< int > &	img,
		ImageAttr< TextureStat > *	tobe_set,
		bool	normalize = true,
		size_t	neighborhood_size = 7
	)			[static]

Computes the texture of this image and sets the ImageAttr passed in.

the ImageAttr<TextureStat> passed is replaced.

float kmeans::TextureStat::get_val

(

size_t

index

)

const

index should be one of the Statistics enums (< NumFeatures).

static float kmeans::TextureStat::get_wt

(

size_t

index

)

[static]

Returns the weight that should be given to the ith Statistic.

The weights add upto 1.0

static void kmeans::TextureStat::scale

(

ImageAttr< TextureStat > &

img

)

[static]

Scales all the values such that they lie in the range 0 to 1.

void kmeans::TextureStat::set_val	(	size_t	index,
		float	val
	)

index should be one of the Statistics enums (< NumFeatures).

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