w2img::Segmenter Class Reference

Inheritance diagram for w2img::Segmenter:

List of all members.

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Detailed Description

Base class of image segmentation algorithms.

Author:

Lakshman

Version:

Id

w2img_Segmenter.h,v 1.11 2011/01/27 20:44:58 lakshman Exp

Public Types
typedef Cluster< SingleFeature >	RegionProperty
	The simplest region property is a cluster of a single feature.
typedef std::vector< int >	Replacement
	Given a region with label i, Replacement[i] provides the new label, usually at a particular scale.
Public Member Functions
virtual SegmenterResult	segment (const code::Image< int > &orig)=0
virtual	~Segmenter ()
	Segmenter (bool wrapRadials=false)
Static Public Member Functions
static void	computeRegionProperty (const code::Image< int > &orig, const SegmenterResult &label, std::vector< RegionProperty > *fillme)
	Fills in the passed in vector with a vector of computed region properties.
static void	computeRegionProperty (const SegmenterResult &label, std::vector< RegionProperty > *fillme)
	Fills in the passed in vector with a vector of computed region properties.
static void	normalize (Segmenter::Replacement &replacement)
	completes the cycle
static SegmenterResult	relabel (const SegmenterResult &label_img)
	Will relabel the image, removing unused labels.
Protected Member Functions
void	expand_segment (int x, int y, const code::Image< int > &orig, code::Image< int > &segimg, int label) const
	Set the segimg at x,y to be label and then call this function.
Static Protected Attributes
static const int	Unset = -1000
static const int	Invalid = -2000
Classes
class	RegionPruner
	Prunes regions after segmentation controls the criteria on which the pruning is done. More...

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Member Typedef Documentation

typedef Cluster< SingleFeature > w2img::Segmenter::RegionProperty

The simplest region property is a cluster of a single feature.

typedef std::vector<int> w2img::Segmenter::Replacement

Given a region with label i, Replacement[i] provides the new label, usually at a particular scale.

The Replacement structure is such that replacement[i] provides the replacement label for the current label i. This replacement may be 0 or negative, which means that no replacement exists.

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Constructor & Destructor Documentation

virtual w2img::Segmenter::~Segmenter

(

)

[inline, virtual]

w2img::Segmenter::Segmenter

(

bool

wrapRadials = false

)

[inline]

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Member Function Documentation

static void w2img::Segmenter::computeRegionProperty	(	const SegmenterResult &	label,
		std::vector< RegionProperty > *	fillme
	)			[static]

Fills in the passed in vector with a vector of computed region properties.

The input label image should be a labeled image such as that returned by the segmenter. WARNING: The resulting properties will not have any of the value elements set because the original image was not passed in.

static void w2img::Segmenter::computeRegionProperty	(	const code::Image< int > &	orig,
		const SegmenterResult &	label,
		std::vector< RegionProperty > *	fillme
	)			[static]

Fills in the passed in vector with a vector of computed region properties.

The input label image should be a labeled image such as that returned by the segmenter.

void w2img::Segmenter::expand_segment	(	int	x,
		int	y,
		const code::Image< int > &	orig,
		code::Image< int > &	segimg,
		int	label
	)			const [protected]

Set the segimg at x,y to be label and then call this function.

It will expand out segimg to all contiguous values that match

static void w2img::Segmenter::normalize

(

Segmenter::Replacement &

replacement

)

[static]

completes the cycle

static SegmenterResult w2img::Segmenter::relabel

(

const SegmenterResult &

label_img

)

[static]

Will relabel the image, removing unused labels.

virtual SegmenterResult w2img::Segmenter::segment

(

const code::Image< int > &

orig

)

[pure virtual]

Implemented in w2img::ContourSegmenter, w2img::ExtendedWatershedSegmenter, w2img::HysteresisSegmenter, w2kmeans::KMeansSegmenter< T >, and w2kmeans::MultiscaleSegmenter.

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Member Data Documentation

const int w2img::Segmenter::Invalid = -2000 [static, protected]

const int w2img::Segmenter::Unset = -1000 [static, protected]

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