vlad.c File Reference

VLAD - Declaration. More...

#include "vlad.h"
#include "mathop.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

Functions
void	vl_vlad_encode (void *enc, vl_type dataType, void const *means, vl_size dimension, vl_size numClusters, void const *data, vl_size numData, void const *assignments, int flags)
	VLAD encoding of a set of vectors. More...

Detailed Description

Author

David Novotny

Andrea Vedaldi

Function Documentation

vl_vlad_encode()

void vl_vlad_encode	(	void *	enc,
		vl_type	dataType,
		void const *	means,
		vl_size	dimension,
		vl_size	numClusters,
		void const *	data,
		vl_size	numData,
		void const *	assignments,
		int	flags
	)

Parameters

enc	output VLAD encoding (out).
dataType	the type of the input data (VL_TYPE_DOUBLE or VL_TYPE_FLOAT).
numData	number of data vectors to encode.
means	cluster means.
numClusters	number of clusters.
data	the data vectors to encode.
dimension	dimensionality of the data.
assignments	data to cluster soft assignments.
flags	options.

enc is the VLAD vector of size numClusters by dimension. means is a matrix with numClusters columns and dimension rows. data is the matrix of vectors to be encoded, with dimension rows and numData columns. assignments is a matrix with numClusters rows and numData columns. All the matrices should be stored in column-major order.

flag allows controlling further options: VL_VLAD_FLAG_NORMALIZE_COMPONENTS, VL_VLAD_FLAG_SQUARE_ROOT, VL_VLAD_FLAG_UNNORMALIZED, and VL_VLAD_FLAG_NORMALIZE_MASS.

See also

Vector of Locally Aggregated Descriptors (VLAD) encoding