org.openimaj.image.feature.local.detector.dog.pyramid

Class DoGOctaveExtremaFinder

java.lang.Object

org.openimaj.image.feature.local.detector.dog.pyramid.DoGOctaveExtremaFinder

All Implemented Interfaces:

OctaveProcessor<GaussianOctave<FImage>,FImage>, OctaveInterestPointFinder<GaussianOctave<FImage>,FImage>, OctaveInterestPointListener<GaussianOctave<FImage>,FImage>

public class DoGOctaveExtremaFinder
extends Object
implements OctaveInterestPointFinder<GaussianOctave<FImage>,FImage>, OctaveInterestPointListener<GaussianOctave<FImage>,FImage>

A DoGOctaveExtremaFinder is an OctaveInterestPointFinder that can be applied to GaussianOctaves. Internally, a Difference-of- Gaussian octave () is constructed from the Gaussian octave and an internal OctaveInterestPointFinder is applied. Detections of interest points from the internal finder are proxied through the DoGOctaveExtremaFinder, and sent to the listener object of the DoGOctaveExtremaFinder.

Author:

Jonathon Hare (jsh2@ecs.soton.ac.uk)

Constructor Summary

Constructors

Constructor and Description
DoGOctaveExtremaFinder(OctaveInterestPointFinder<GaussianOctave<FImage>,FImage> finder) Construct with the given finder.
DoGOctaveExtremaFinder(OctaveInterestPointFinder<GaussianOctave<FImage>,FImage> finder, OctaveInterestPointListener<GaussianOctave<FImage>,FImage> listener) Construct with the given finder and listener.

Method Summary

Modifier and Type	Method and Description
void	foundInterestPoint(OctaveInterestPointFinder<GaussianOctave<FImage>,FImage> finder, float x, float y, float octaveScale) Do something with a detected interest point.
int	getCurrentScaleIndex() Get the current scale index within the octave.
GaussianOctave<FImage>	getDoGOctave() Get the difference-of-Gaussian octave corresponding to the current Gaussian octave.
GaussianOctave<FImage>	getOctave() Get the octave from which we are operating
OctaveInterestPointListener<GaussianOctave<FImage>,FImage>	getOctaveInterestPointListener() Get the current listener object.
void	process(GaussianOctave<FImage> octave) Process the provided octave.
void	setOctaveInterestPointListener(OctaveInterestPointListener<GaussianOctave<FImage>,FImage> listener) Set a listener object that will listen to events triggered when interest points are detected.

Methods inherited from class java.lang.Object

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

Constructor Detail

DoGOctaveExtremaFinder

public DoGOctaveExtremaFinder(OctaveInterestPointFinder<GaussianOctave<FImage>,FImage> finder)

Construct with the given finder.

Parameters:

finder - the finder

DoGOctaveExtremaFinder

public DoGOctaveExtremaFinder(OctaveInterestPointFinder<GaussianOctave<FImage>,FImage> finder,
                              OctaveInterestPointListener<GaussianOctave<FImage>,FImage> listener)

Construct with the given finder and listener.

Parameters:

finder - the finder

listener - the listener

Method Detail

setOctaveInterestPointListener

public void setOctaveInterestPointListener(OctaveInterestPointListener<GaussianOctave<FImage>,FImage> listener)

Description copied from interface: OctaveInterestPointFinder

Set a listener object that will listen to events triggered when interest points are detected.

Specified by:

setOctaveInterestPointListener in interface OctaveInterestPointFinder<GaussianOctave<FImage>,FImage>

Parameters:

listener - the listener

getOctaveInterestPointListener

public OctaveInterestPointListener<GaussianOctave<FImage>,FImage> getOctaveInterestPointListener()

Description copied from interface: OctaveInterestPointFinder

Get the current listener object.

Specified by:

getOctaveInterestPointListener in interface OctaveInterestPointFinder<GaussianOctave<FImage>,FImage>

Returns:

the listener, or null if none set.

process

public void process(GaussianOctave<FImage> octave)

Description copied from interface: OctaveProcessor

Process the provided octave.

Specified by:

process in interface OctaveProcessor<GaussianOctave<FImage>,FImage>

Parameters:

octave - the octave.

getOctave

public GaussianOctave<FImage> getOctave()

Description copied from interface: OctaveInterestPointFinder

Get the octave from which we are operating

Specified by:

getOctave in interface OctaveInterestPointFinder<GaussianOctave<FImage>,FImage>

Returns:

the octave

getDoGOctave

public GaussianOctave<FImage> getDoGOctave()

Get the difference-of-Gaussian octave corresponding to the current Gaussian octave.

Returns:

the difference-of-Gaussian octave

getCurrentScaleIndex

public int getCurrentScaleIndex()

Description copied from interface: OctaveInterestPointFinder

Get the current scale index within the octave. Index 0 is the first level of the octave.

Specified by:

getCurrentScaleIndex in interface OctaveInterestPointFinder<GaussianOctave<FImage>,FImage>

Returns:

the current scale index.

foundInterestPoint

public void foundInterestPoint(OctaveInterestPointFinder<GaussianOctave<FImage>,FImage> finder,
                               float x,
                               float y,
                               float octaveScale)

Description copied from interface: OctaveInterestPointListener

Do something with a detected interest point.

Specified by:

foundInterestPoint in interface OctaveInterestPointListener<GaussianOctave<FImage>,FImage>

Parameters:

finder - the finder that found the point

x - the x position

y - the y position

octaveScale - the scale within the octave