de.lmu.ifi.dbs.jfeaturelib.pointDetector

Class Harris

java.lang.Object

de.lmu.ifi.dbs.jfeaturelib.pointDetector.Harris

All Implemented Interfaces:

Descriptor, PointDetector

public class Harris
extends Object
implements PointDetector

Harris Corner Detection

Author:

Mariagrazia Messina - mariagraziamess@libero.it http://svg.dmi.unict.it/iplab/imagej/Plugins/Feature%20Point%20Detectors/Harris/harris.htm

Nested Class Summary

Nested classes/interfaces inherited from interface de.lmu.ifi.dbs.jfeaturelib.Descriptor

Descriptor.Supports

Field Summary

Fields inherited from interface de.lmu.ifi.dbs.jfeaturelib.Descriptor

DOES_ALL

Constructor Summary

Constructors

Constructor and Description
Harris() Creates Harris Corner detection with default parameters
Harris(float gaussianSigma, int minDistance, int minMeasure, int iteractions) Creates Harris Corner Detection

Method Summary

Methods

Modifier and Type	Method and Description
void	addPropertyChangeListener(PropertyChangeListener listener) Adds a change listener to this descriptor.
List<ImagePoint>	getPoints() Returns the Corners as an ImagePoint List
int[]	mappatura(int x, int y, int fact) Function to map the pixels of the subsampled image within the original one
void	run(ij.process.ImageProcessor ip) Starts the Harris Corner Detection
EnumSet<Descriptor.Supports>	supports() Defines the capability of the algorithm.

Methods inherited from class java.lang.Object

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

Constructor Detail

Harris

public Harris()

Creates Harris Corner detection with default parameters

Harris

public Harris(float gaussianSigma,
      int minDistance,
      int minMeasure,
      int iteractions)

Creates Harris Corner Detection

Parameters:

gaussianSigma - Gaussian Variance (Default: 1.4f)

minDistance - Distance Threshold (Default: 10)

minMeasure - Value Threshold (Default: 80)

iteractions - Number of Iteractions (Default: 1)

Method Detail

getPoints

public List<ImagePoint> getPoints()

Returns the Corners as an ImagePoint List

Specified by:

getPoints in interface PointDetector

Returns:

ImagePoint List

supports

public EnumSet<Descriptor.Supports> supports()

Defines the capability of the algorithm.

Specified by:

supports in interface Descriptor

Returns:

the set of supported capabilities.

run

public void run(ij.process.ImageProcessor ip)

Starts the Harris Corner Detection

Specified by:

run in interface Descriptor

Parameters:

ip - ImageProcessor of the source image

mappatura

public int[] mappatura(int x,
              int y,
              int fact)

Function to map the pixels of the subsampled image within the original one

Parameters:

x - x-coordinate

y - y-coordinate

fact - parametro di scala

Returns:

coordinate x e y nell'immagine originale

addPropertyChangeListener

public void addPropertyChangeListener(PropertyChangeListener listener)

Description copied from interface: Descriptor

Adds a change listener to this descriptor. The descriptor might fire status change events which can be used to track the progress. Keep in mind that no implementation is forced to fire any events at all.

Specified by:

addPropertyChangeListener in interface Descriptor