org.openimaj.image.feature.local.engine

Class DoGColourSIFTEngine

java.lang.Object

org.openimaj.image.feature.local.engine.DoGColourSIFTEngine

All Implemented Interfaces:

Engine<Keypoint,MBFImage>

@Reference(type=Article,author={"Burghouts, Gertjan J.","Geusebroek, Jan-Mark"},title="Performance evaluation of local colour invariants",year="2009",journal="Comput. Vis. Image Underst.",pages={"48","","62"},url="http://dx.doi.org/10.1016/j.cviu.2008.07.003",month="jan",number="1",publisher="Elsevier Science Inc.",volume="113",customData={"issn","1077-3142","numpages","15","doi","10.1016/j.cviu.2008.07.003","acmid","1465842","address","New York, NY, USA","keywords","Colour, Local descriptors, SIFT"}) @Reference(type=Article,author={"van de Sande, K. E. A.","Gevers, T.","Snoek, C. G. M."},title="Evaluating Color Descriptors for Object and Scene Recognition",year="2010",journal="IEEE Transactions on Pattern Analysis and Machine Intelligence",pages={"1582","","1596"},url="http://www.science.uva.nl/research/publications/2010/vandeSandeTPAMI2010",number="9",volume="32")
public class DoGColourSIFTEngine
extends Object
implements Engine<Keypoint,MBFImage>

The DoGSIFTEngine extended to colour images (aka Colour-SIFT).

The DoGColourSIFTEngine creates a luminance image from which to apply the difference-of-Gaussian interest point detection algorithm, but extracts the actual SIFT features from the bands of the input image directly. This means that the type of Colour-SIFT feature is controlled directly by the colour-space of the input image; for example if an RGB image is given as input, then the feature will be standard RGB-SIFT.

Author:

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

Constructor Summary

Constructors

Constructor and Description
DoGColourSIFTEngine() Construct with the default values for the DoGSIFTEngineOptions.
DoGColourSIFTEngine(DoGSIFTEngineOptions<MBFImage> options) Construct with the given options.

Method Summary

Modifier and Type	Method and Description
LocalFeatureList<Keypoint>	findFeatures(MBFImage image) Find local features in the given image and return them.
LocalFeatureList<Keypoint>	findFeatures(MBFImage image, FImage luminance) Find DoG interest points in the given luminance image, but extract the SIFT features from the colour image.
protected LocalFeatureList<Keypoint>	findFeaturesInternal(MBFImage image)
DoGSIFTEngineOptions<MBFImage>	getOptions()

Methods inherited from class java.lang.Object

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

Constructor Detail

DoGColourSIFTEngine

public DoGColourSIFTEngine()

Construct with the default values for the DoGSIFTEngineOptions.

DoGColourSIFTEngine

public DoGColourSIFTEngine(DoGSIFTEngineOptions<MBFImage> options)

Construct with the given options.

Parameters:

options - the options.

Method Detail

findFeatures

public LocalFeatureList<Keypoint> findFeatures(MBFImage image)

Description copied from interface: Engine

Find local features in the given image and return them.

Specified by:

findFeatures in interface Engine<Keypoint,MBFImage>

Parameters:

image - the image

Returns:

the features.

findFeatures

public LocalFeatureList<Keypoint> findFeatures(MBFImage image,
                                               FImage luminance)

Find DoG interest points in the given luminance image, but extract the SIFT features from the colour image.

Parameters:

image - the colour image to extract the SIFT features from

luminance - the luminance image to detect the interest points in

Returns:

the extracted features

findFeaturesInternal

protected LocalFeatureList<Keypoint> findFeaturesInternal(MBFImage image)

getOptions

public DoGSIFTEngineOptions<MBFImage> getOptions()

Returns:

the current options used by the engine