lbp.c File Reference

Local Binary Patterns (LBP) - Definition. More...

#include "lbp.h"
#include "mathop.h"
#include "string.h"

Include dependency graph for lbp.c:

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Defines
#define	at(u, v)   (*(image + width * (v) + (u)))
#define	to(u, v, w)   (*(features + cstride * (w) + cwidth * (v) + (u)))
Functions
static void	_vl_lbp_init_uniform (VlLbp *self)
void	vl_lbp_delete (VlLbp *self)
	Delete VlLbp object.
VL_EXPORT vl_size	vl_lbp_get_dimension (VlLbp *self)
	Get the dimension of the LBP histograms.
VlLbp *	vl_lbp_new (VlLbpMappingType type, vl_bool transposed)
	Create a new LBP object.
VL_EXPORT void	vl_lbp_process (VlLbp *self, float *features, float *image, vl_size width, vl_size height, vl_size cellSize)
	Extract LBP features.

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Detailed Description

Local Binary Patterns (LBP) - Definition.

Author:

Andrea Vedaldi

Definition in file lbp.c.

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Define Documentation

#define at	(		u,
			v
	)		(*(image + width * (v) + (u)))

#define to	(		u,
			v,
			w
	)		(*(features + cstride * (w) + cwidth * (v) + (u)))

---

Function Documentation

static void _vl_lbp_init_uniform

(

VlLbp *

self

)

[static]

Definition at line 172 of file lbp.c.

void vl_lbp_delete

(

VlLbp *

self

)

Delete VlLbp object.

Parameters:

self	object to delete.

Definition at line 238 of file lbp.c.

VL_EXPORT vl_size vl_lbp_get_dimension

(

VlLbp *

self

)

Get the dimension of the LBP histograms.

Returns:

dimension of the LBP histograms. The dimension depends on the type of quantization used.

See also:

vl_lbp_new().

Definition at line 248 of file lbp.c.

VlLbp* vl_lbp_new	(	VlLbpMappingType	type,
		vl_bool	transposed
	)

Create a new LBP object.

Parameters:

type	type of LBP features.
transposed	if true, then transpose each LBP pattern.

Returns:

new VlLbp object instance.

Definition at line 218 of file lbp.c.

VL_EXPORT void vl_lbp_process	(	VlLbp *	self,
		float *	features,
		float *	image,
		vl_size	width,
		vl_size	height,
		vl_size	cellSize
	)

Extract LBP features.

Parameters:

self	LBP object.
features	buffer to write the features to.
image	image.
width	image width.
height	image height.
cellSize	size of the LBP cells.

features is a numColumns x numRows x dimension where dimension is the dimension of a LBP feature obtained from vl_lbp_get_dimension, numColumns is equal to floor(width / cellSize), and similarly for numRows.

Definition at line 270 of file lbp.c.