org.openimaj.image.analysis.algorithm

Class HoughCircles

java.lang.Object

org.openimaj.image.analysis.algorithm.HoughCircles

All Implemented Interfaces:

ImageAnalyser<FImage>

public class HoughCircles
extends Object
implements ImageAnalyser<FImage>

An implementation of the Hough transform for circles.

Author:

Sina Samangooei (ss@ecs.soton.ac.uk)

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	HoughCircles.WeightedCircle A circle with an associated weight.

Field Summary

Fields

Modifier and Type	Field and Description
protected int	maxRad
protected int	minRad
protected gnu.trove.map.hash.TIntObjectHashMap<gnu.trove.map.hash.TIntObjectHashMap<gnu.trove.map.hash.TIntFloatHashMap>>	radmap

Constructor Summary

Constructors

Constructor and Description
HoughCircles(int minRad, int maxRad, int radIncrement, int nDegree) Construct with the given parameters.

Method Summary

Modifier and Type	Method and Description
void	analyseImage(FImage image) Analyse an image.
List<HoughCircles.WeightedCircle>	getBest(int n) Get the n-best detected circles.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

minRad

protected int minRad

maxRad

protected int maxRad

radmap

protected gnu.trove.map.hash.TIntObjectHashMap<gnu.trove.map.hash.TIntObjectHashMap<gnu.trove.map.hash.TIntFloatHashMap>> radmap

Constructor Detail

HoughCircles

public HoughCircles(int minRad,
                    int maxRad,
                    int radIncrement,
                    int nDegree)

Construct with the given parameters.

Parameters:

minRad - minimum search radius

maxRad - maximum search radius

radIncrement - amount to increment search radius by between min and max.

nDegree - number of degree increments

Method Detail

analyseImage

public void analyseImage(FImage image)

Description copied from interface: ImageAnalyser

Analyse an image.

Specified by:

analyseImage in interface ImageAnalyser<FImage>

Parameters:

image - The image to process in place.

getBest

public List<HoughCircles.WeightedCircle> getBest(int n)

Get the n-best detected circles.

Parameters:

n - the number of circles to return

Returns:

the n best detected circles.