GClasses::G2DRegionGraph Class Reference

Detailed Description

Implements a region adjacency graph for 2D images, and lets you merge similar regions to create a hierarchical breakdown of the image.

#include <GRegion.h>

Inheritance diagram for GClasses::G2DRegionGraph:

Public Member Functions
	G2DRegionGraph (int nWidth, int nHeight)
virtual	~G2DRegionGraph ()
void	makeCoarserRegions (G2DRegionGraph *pFineRegions)
	Given a G2DRegionGraph, this merges every region with its closest neighbor to form a coarser G2DRegionGraph. More...
void	makeWatershedRegions (const GImage *pImage)
	Toboggans the gradient magnitude image of the provided image to produce a list of watershed regions. More...
GImage *	regionMask ()
	Gets a pointer to the region mask image. More...
void	setMaskPixel (int x, int y, unsigned int c, size_t nRegion)
	Specifies which region the given pixel belongs to. The color of the pixel is also specified so it can keep track of the average color of each region. More...
Public Member Functions inherited from GClasses::GRegionAjacencyGraph
	GRegionAjacencyGraph ()
virtual	~GRegionAjacencyGraph ()
size_t	addRegion ()
	Creates a new region and returns the region number. More...
void	ajacency (size_t nEdge, size_t *pRegion1, size_t *pRegion2)
	Returns the two regions that are ajacent. More...
size_t	ajacencyCount ()
	Returns the number of ajacencies. More...
bool	areNeighbors (size_t nRegion1, size_t nRegion2)
	Returns true if the two specified regions are neighbors. More...
void	averageColor (size_t nRegion, float *pRed, float *pGreen, float *pBlue)
	Returns the average pixel color in the specified region. More...
void	makeNeighbors (size_t nRegion1, size_t nRegion2)
	Makes the two specified regions neighbors (if they aren't already neighbors) More...
size_t	regionCount ()
	Returns the number of regions so far. More...

Protected Attributes
GImage *	m_pRegionMask
Protected Attributes inherited from GClasses::GRegionAjacencyGraph
std::vector< GRegionEdge * >	m_neighbors
GHeap *	m_pHeap
std::vector< GRegion * >	m_regions

Constructor & Destructor Documentation

GClasses::G2DRegionGraph::G2DRegionGraph	(	int	nWidth,
		int	nHeight
	)

virtual GClasses::G2DRegionGraph::~G2DRegionGraph ( )

virtual

Member Function Documentation

void GClasses::G2DRegionGraph::makeCoarserRegions

(

G2DRegionGraph *

pFineRegions

)

Given a G2DRegionGraph, this merges every region with its closest neighbor to form a coarser G2DRegionGraph.

void GClasses::G2DRegionGraph::makeWatershedRegions

(

const GImage *

pImage

)

Toboggans the gradient magnitude image of the provided image to produce a list of watershed regions.

GImage* GClasses::G2DRegionGraph::regionMask ( )

inline

Gets a pointer to the region mask image.

void GClasses::G2DRegionGraph::setMaskPixel	(	int	x,
		int	y,
		unsigned int	c,
		size_t	nRegion
	)

Specifies which region the given pixel belongs to. The color of the pixel is also specified so it can keep track of the average color of each region.

Member Data Documentation

GImage* GClasses::G2DRegionGraph::m_pRegionMask

protected