vector_aggregation
Class VladAggregatorMultipleVocabularies

java.lang.Object
  vector_aggregation.VladAggregatorMultipleVocabularies

public class VladAggregatorMultipleVocabularies
extends java.lang.Object

This class computes multiple vocabulary VLAD vectors which are already power and L2 normalized.

Author:

Eleftherios Spyromitros-Xioufis

Field Summary

private int	vectorLength
private VladAggregator[]	vladAggregators

Constructor Summary

VladAggregatorMultipleVocabularies(double[][][] codebooks)
The default constructor calls the super constructor.

Method Summary

double[]	aggregate(java.util.ArrayList<double[]> descriptors) Takes as input an ArrayList of double arrays which contains the set of local descriptors for an image.
double[]	aggregate(double[][] descriptors)
int	getVectorLength()

Methods inherited from class java.lang.Object

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

Field Detail

vladAggregators

private VladAggregator[] vladAggregators

vectorLength

private int vectorLength

Constructor Detail

VladAggregatorMultipleVocabularies

public VladAggregatorMultipleVocabularies(double[][][] codebooks)

The default constructor calls the super constructor.

Parameters:

codebook -

Method Detail

getVectorLength

public int getVectorLength()

aggregate

public double[] aggregate(java.util.ArrayList<double[]> descriptors)
                   throws java.lang.Exception

Takes as input an ArrayList of double arrays which contains the set of local descriptors for an image. Returns the VLAD vector representation of the image using the codebooks supplied in the constructor. TO DO: A vectorized implementation would probably be faster.

Parameters:

descriptors -

Returns:

Throws:

java.lang.Exception

java.lang.Exception

aggregate

public double[] aggregate(double[][] descriptors)
                   throws java.lang.Exception

Throws:

java.lang.Exception