org.openimaj.image.feature.local.engine.ipd

Class AbstractIPDSIFTEngine<T extends InterestPointData>

java.lang.Object

org.openimaj.image.feature.local.engine.ipd.AbstractIPDSIFTEngine<T>

Type Parameters:

T - The type of InterestPointData

Direct Known Subclasses:

EllipticIPDSIFTEngine, IPDSIFTEngine

public abstract class AbstractIPDSIFTEngine<T extends InterestPointData>
extends Object

Extract SIFT features as defined by David Lowe but located using interest point detectors. This Engine allows the control interest point detector used, whether scale simulation should be used and how interest point patches are extracted.

Author:

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

Constructor Summary

Constructors

Constructor and Description
AbstractIPDSIFTEngine(MultiscaleInterestPointDetector<T> detector) Initiate the engine with a given detector.

Method Summary

Modifier and Type	Method and Description
abstract InterestPointFeatureCollector<T>	constructCollector(InterestPointGradientFeatureExtractor extractor) Given an extractor, construct an InterestPointFeatureCollector
LocalFeatureList<InterestPointKeypoint<T>>	findFeatures(FImage image) Find the interest points using the provided detector and extract a SIFT descriptor per point.
FinderMode<T>	getFinderMode()
void	setAcrossScales(boolean acrossScales)
void	setFinderMode(FinderMode<T> finderMode) set the underlying finder
void	setSelectionMode(IPDSelectionMode selectionMode) set the selection mode number

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractIPDSIFTEngine

public AbstractIPDSIFTEngine(MultiscaleInterestPointDetector<T> detector)

Initiate the engine with a given detector.

Parameters:

detector -

Method Detail

setSelectionMode

public void setSelectionMode(IPDSelectionMode selectionMode)

set the selection mode number

Parameters:

selectionMode - the selection mode

findFeatures

public LocalFeatureList<InterestPointKeypoint<T>> findFeatures(FImage image)

Find the interest points using the provided detector and extract a SIFT descriptor per point.

Parameters:

image - to extract features from

Returns:

extracted interest point features

constructCollector

public abstract InterestPointFeatureCollector<T> constructCollector(InterestPointGradientFeatureExtractor extractor)

Given an extractor, construct an InterestPointFeatureCollector

Parameters:

extractor -

Returns:

the collector

setAcrossScales

public void setAcrossScales(boolean acrossScales)

Parameters:

acrossScales -

setFinderMode

public void setFinderMode(FinderMode<T> finderMode)

set the underlying finder

Parameters:

finderMode -

getFinderMode

public FinderMode<T> getFinderMode()

Returns:

the finder used by findFeatures(FImage)