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

Class NullOrientationExtractor

java.lang.Object

org.openimaj.image.feature.local.detector.dog.extractor.AbstractDominantOrientationExtractor

org.openimaj.image.feature.local.detector.dog.extractor.NullOrientationExtractor

All Implemented Interfaces:

FeatureVectorExtractor<FloatFV,GradientScaleSpaceImageExtractorProperties<FImage>>

public class NullOrientationExtractor
extends AbstractDominantOrientationExtractor

An orientation extractor that always returns 0. Useful for non-rotation invariant features.

Author:

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

Constructor Summary

Constructors

Constructor and Description
NullOrientationExtractor()

Method Summary

Modifier and Type	Method and Description
float[]	extractFeatureRaw(GradientScaleSpaceImageExtractorProperties<FImage> props) Find the dominant orientations.

Methods inherited from class org.openimaj.image.feature.local.detector.dog.extractor.AbstractDominantOrientationExtractor

extractFeature

Methods inherited from class java.lang.Object

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

Constructor Detail

NullOrientationExtractor

public NullOrientationExtractor()

Method Detail

extractFeatureRaw

public float[] extractFeatureRaw(GradientScaleSpaceImageExtractorProperties<FImage> props)

Description copied from class: AbstractDominantOrientationExtractor

Find the dominant orientations.

Specified by:

extractFeatureRaw in class AbstractDominantOrientationExtractor

Parameters:

props - Properties describing the interest point in scale space.

Returns:

an array of the angles of the dominant orientations [-PI to PI].