feature_extraction
Class DescriptorExtractor

java.lang.Object
  feature_extraction.DescriptorExtractor

Direct Known Subclasses:

SIFTExtractor, SURFExtractor

public abstract class DescriptorExtractor
extends java.lang.Object

Abstract class for all descriptor extractors.

Author:

Eleftherios Spyromitros-Xioufis

Field Summary

protected boolean	l2Normalization Whether to apply L2 normalization or not.
protected boolean	powerNormalization Whether to apply power normalization or not.
static int	SIFTLength
static int	SURFLength
private long	totalExtractionTime The total feature extraction time.
protected long	totalNumberInterestPoints The total number of detected interest points.

Constructor Summary

DescriptorExtractor()

Method Summary

double[][]	extractDescriptors(java.awt.image.BufferedImage image)
abstract double[][]	extractDescriptorsInternal(java.awt.image.BufferedImage image)
long	getTotalExtractionTime()
long	getTotalNumberInterestPoints()
void	setL2Normalization(boolean l2Normalization)
void	setPowerNormalization(boolean powerNormalization)

Methods inherited from class java.lang.Object

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

Field Detail

SIFTLength

public static final int SIFTLength

See Also:

Constant Field Values

SURFLength

public static final int SURFLength

See Also:

Constant Field Values

l2Normalization

protected boolean l2Normalization

Whether to apply L2 normalization or not.

powerNormalization

protected boolean powerNormalization

Whether to apply power normalization or not.

totalExtractionTime

private long totalExtractionTime

The total feature extraction time.

totalNumberInterestPoints

protected long totalNumberInterestPoints

The total number of detected interest points.

Constructor Detail

DescriptorExtractor

public DescriptorExtractor()

Method Detail

setPowerNormalization

public void setPowerNormalization(boolean powerNormalization)

setL2Normalization

public void setL2Normalization(boolean l2Normalization)

extractDescriptors

public double[][] extractDescriptors(java.awt.image.BufferedImage image)
                              throws java.lang.Exception

Throws:

java.lang.Exception

extractDescriptorsInternal

public abstract double[][] extractDescriptorsInternal(java.awt.image.BufferedImage image)
                                               throws java.lang.Exception

Throws:

java.lang.Exception

getTotalExtractionTime

public long getTotalExtractionTime()

getTotalNumberInterestPoints

public long getTotalNumberInterestPoints()