dsift.c File Reference

Dense SIFT - Definition. More...

#include "dsift.h"
#include "pgm.h"
#include "mathop.h"
#include "imopv.h"
#include <math.h>
#include <string.h>

Include dependency graph for dsift.c:

Go to the source code of this file.

Defines
#define	at(x, y)   (im[(y)*self->imWidth+(x)])
Functions
static void	_vl_dsift_alloc_buffers (VlDsiftFilter *self)
static void	_vl_dsift_free_buffers (VlDsiftFilter *self)
static float	_vl_dsift_get_bin_window_mean (int binSize, int numBins, int binIndex, double windowSize)
float *	_vl_dsift_new_kernel (int binSize, int numBins, int binIndex, double windowSize)
VL_INLINE float	_vl_dsift_normalize_histogram (float *begin, float *end)
VL_EXPORT void	_vl_dsift_update_buffers (VlDsiftFilter *self)
VL_INLINE void	_vl_dsift_with_flat_window (VlDsiftFilter *self)
VL_INLINE void	_vl_dsift_with_gaussian_window (VlDsiftFilter *self)
VL_EXPORT void	vl_dsift_delete (VlDsiftFilter *self)
	Delete DSIFT filter.
VL_EXPORT VlDsiftFilter *	vl_dsift_new (int imWidth, int imHeight)
	Create a new DSIFT filter.
VL_EXPORT VlDsiftFilter *	vl_dsift_new_basic (int imWidth, int imHeight, int step, int binSize)
	Create a new DSIFT filter (basic interface)
void	vl_dsift_process (VlDsiftFilter *self, float const *im)
	Compute keypoints and descriptors.

---

Detailed Description

Dense SIFT - Definition.

Author:

Andrea Vedaldi

Brian Fulkerson

Definition in file dsift.c.

---

Define Documentation

#define at	(		x,
			y
	)		(im[(y)*self->imWidth+(x)])

---

Function Documentation

static void _vl_dsift_alloc_buffers

(

VlDsiftFilter *

self

)

[static]

------------------------------------------------------------------

Definition at line 374 of file dsift.c.

static void _vl_dsift_free_buffers

(

VlDsiftFilter *

self

)

[static]

------------------------------------------------------------------

Definition at line 319 of file dsift.c.

static float _vl_dsift_get_bin_window_mean	(	int	binSize,
		int	numBins,
		int	binIndex,
		double	windowSize
	)		[static]

Definition at line 273 of file dsift.c.

float* _vl_dsift_new_kernel	(	int	binSize,
		int	numBins,
		int	binIndex,
		double	windowSize
	)

------------------------------------------------------------------

Definition at line 250 of file dsift.c.

VL_INLINE float _vl_dsift_normalize_histogram	(	float *	begin,
		float *	end
	)

------------------------------------------------------------------

Definition at line 297 of file dsift.c.

VL_EXPORT void _vl_dsift_update_buffers

(

VlDsiftFilter *

self

)

------------------------------------------------------------------

Definition at line 346 of file dsift.c.

VL_INLINE void _vl_dsift_with_flat_window

(

VlDsiftFilter *

self

)

------------------------------------------------------------------

Definition at line 574 of file dsift.c.

VL_INLINE void _vl_dsift_with_gaussian_window

(

VlDsiftFilter *

self

)

------------------------------------------------------------------

Definition at line 499 of file dsift.c.

VL_EXPORT void vl_dsift_delete

(

VlDsiftFilter *

self

)

Delete DSIFT filter.

------------------------------------------------------------------

Parameters:

self	DSIFT filter.

Definition at line 484 of file dsift.c.

VL_EXPORT VlDsiftFilter* vl_dsift_new	(	int	imWidth,
		int	imHeight
	)

Create a new DSIFT filter.

------------------------------------------------------------------

Parameters:

imWidth	width of the image.
imHeight	height of the image

Returns:

new filter.

Definition at line 415 of file dsift.c.

VL_EXPORT VlDsiftFilter* vl_dsift_new_basic	(	int	imWidth,
		int	imHeight,
		int	step,
		int	binSize
	)

Create a new DSIFT filter (basic interface)

------------------------------------------------------------------

Parameters:

imWidth	width of the image.
imHeight	height of the image.
step	sampling step.
binSize	bin size.

Returns:

new filter.

The descriptor geometry matches the standard SIFT descriptor.

Definition at line 467 of file dsift.c.

void vl_dsift_process	(	VlDsiftFilter *	self,
		float const *	im
	)

Compute keypoints and descriptors.

------------------------------------------------------------------

Parameters:

self	DSIFT filter.
im	image data.

Definition at line 664 of file dsift.c.