haloc::Hash Class Reference

#include <hash.h>

List of all members.

Classes
struct	Params
Public Member Functions
vector< float >	getHash (Mat desc)
	Compute the hash.
	Hash ()
	Hash class constructor.
void	init (Mat desc)
bool	isInitialized ()
	Return true if the class has been initialized.
float	match (vector< float > hash_1, vector< float > hash_2)
	Compute the distance between 2 hashes.
Params	params () const
void	setParams (const Params &params)
	Sets the class parameters.
Private Member Functions
vector< float >	compute_random_vector (uint seed, int size)
	Computes a random vector of some size.
void	initProjections (int desc_size)
	Compute the random vector/s needed to generate the hash.
vector< float >	unit_vector (vector< float > x)
	Make a vector unit.
Private Attributes
int	h_size_
	> Vector of random values
bool	initialized_
	> Size of the hash
Params	params_
vector< vector< float > >	r_
	> Stores parameters

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Detailed Description

Definition at line 16 of file hash.h.

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Constructor & Destructor Documentation

haloc::Hash::Hash

(

)

Hash class constructor.

Definition at line 14 of file hash.cpp.

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Member Function Documentation

vector< float > haloc::Hash::compute_random_vector	(	uint	seed,
		int	size
	)		[private]

Computes a random vector of some size.

Returns:

random vector

Parameters:

seed	to generate the random values
desired	size

Definition at line 150 of file hash.cpp.

vector< float > haloc::Hash::getHash

(

Mat

desc

)

Compute the hash.

Returns:

hash vector

Parameters:

cvMat

containing the descriptors of the image

Definition at line 55 of file hash.cpp.

void haloc::Hash::init

(

Mat

desc

)

Definition at line 39 of file hash.cpp.

void haloc::Hash::initProjections

(

int

desc_size

)

[private]

Compute the random vector/s needed to generate the hash.

Returns:

Parameters:

size	of the initial descriptor matrix.
true	to generate 'n' random orthogonal projections, false to generate 'n' random non-orthogonal projections.

Definition at line 86 of file hash.cpp.

bool haloc::Hash::isInitialized

(

)

Return true if the class has been initialized.

Returns:

Definition at line 24 of file hash.cpp.

float haloc::Hash::match	(	vector< float >	hash_1,
		vector< float >	hash_2
	)

Compute the distance between 2 hashes.

Returns:

the distance

Parameters:

hash	1
hash	2

Definition at line 183 of file hash.cpp.

Params haloc::Hash::params

(

)

const [inline]

Definition at line 43 of file hash.h.

void haloc::Hash::setParams

(

const Params &

params

)

Sets the class parameters.

Returns:

Parameters:

stuct

of parameters

Definition at line 33 of file hash.cpp.

vector< float > haloc::Hash::unit_vector

(

vector< float >

x

)

[private]

Make a vector unit.

Returns:

the "unitized" vector

Parameters:

the	"non-unitized" vector

Definition at line 163 of file hash.cpp.

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Member Data Documentation

int haloc::Hash::h_size_ [private]

> Vector of random values

Definition at line 68 of file hash.h.

bool haloc::Hash::initialized_ [private]

> Size of the hash

Definition at line 69 of file hash.h.

Params haloc::Hash::params_ [private]

Definition at line 66 of file hash.h.

vector< vector<float> > haloc::Hash::r_ [private]

> Stores parameters

Definition at line 67 of file hash.h.

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The documentation for this class was generated from the following files:

• hash.h
• hash.cpp