org.openimaj.image.feature.local.affine

Class ColourASIFT

java.lang.Object

org.openimaj.image.feature.local.affine.AffineSimulationExtractor<LocalFeatureList<Keypoint>,Keypoint,I,P>

org.openimaj.image.feature.local.affine.ASIFT<MBFImage,Float[]>

org.openimaj.image.feature.local.affine.ColourASIFT

public class ColourASIFT
extends ASIFT<MBFImage,Float[]>

Colour Affine-simulated SIFT (CASIFT). A DoGColourSIFTEngine is used internally to find the features. Specifically, 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)

Field Summary

Fields inherited from class org.openimaj.image.feature.local.affine.AffineSimulationExtractor

allInterestPoints, BorderFact, mappedInterestPoints, PI, simulationOrder

Constructor Summary

Constructors

Constructor and Description
ColourASIFT(boolean hires) Construct the ASIFT extractor using the default parameters for the DoGSIFTEngine, with the exception of the option to double the size of the initial image which can be overridden.
ColourASIFT(DoGSIFTEngineOptions<MBFImage> opts) Construct with the given options for the internal DoGSIFTEngine.

Method Summary

Modifier and Type	Method and Description
Engine<Keypoint,MBFImage>	constructEngine(DoGSIFTEngineOptions<MBFImage> opts) An engine which can process images of type and output keypoints

Methods inherited from class org.openimaj.image.feature.local.affine.ASIFT

detectFeatures, newList

Methods inherited from class org.openimaj.image.feature.local.affine.AffineSimulationExtractor

detectFeatures, detectFeatures, detectFeatures, filterEdgesTransformed, getFeatures, getKeypointsMap

Methods inherited from class java.lang.Object

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

Constructor Detail

ColourASIFT

public ColourASIFT(DoGSIFTEngineOptions<MBFImage> opts)

Construct with the given options for the internal DoGSIFTEngine.

Parameters:

opts -

ColourASIFT

public ColourASIFT(boolean hires)

Construct the ASIFT extractor using the default parameters for the DoGSIFTEngine, with the exception of the option to double the size of the initial image which can be overridden.

Parameters:

hires - if true, then the input image is doubled in size before the SIFT features are extracted.

See Also:

GaussianPyramidOptions.setDoubleInitialImage(boolean)

Method Detail

constructEngine

public Engine<Keypoint,MBFImage> constructEngine(DoGSIFTEngineOptions<MBFImage> opts)

Description copied from class: ASIFT

An engine which can process images of type and output keypoints

Specified by:

constructEngine in class ASIFT<MBFImage,Float[]>

Returns:

various engines