dsift.c File Reference

Dense SIFT - Definition. More...

#include "dsift.h"
#include <math.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <time.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)
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)
void	vl_dsift_delete (VlDsiftFilter *self)
	Delete DSIFT filter.
VlDsiftFilter *	vl_dsift_new (int imWidth, int imHeight)
	Create a new DSIFT filter.
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.
void	vl_imconvcol_vf (float *dst, int dst_stride, float const *src, int src_width, int src_height, int src_stride, float const *filt, int filt_begin, int filt_end, int step, unsigned int flags)
void	vl_imconvcoltri_f (float *dest, vl_size destStride, float const *image, vl_size imageWidth, vl_size imageHeight, vl_size imageStride, vl_size filterSize, vl_size step, unsigned int flags)
	convolution triangular kernel

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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 383 of file dsift.c.

static void _vl_dsift_free_buffers

(

VlDsiftFilter *

self

)

[static]

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

Definition at line 328 of file dsift.c.

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

Definition at line 282 of file dsift.c.

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

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

Definition at line 259 of file dsift.c.

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

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

Definition at line 306 of file dsift.c.

void _vl_dsift_update_buffers

(

VlDsiftFilter *

self

)

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

Definition at line 355 of file dsift.c.

VL_INLINE void _vl_dsift_with_flat_window

(

VlDsiftFilter *

self

)

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

Definition at line 583 of file dsift.c.

VL_INLINE void _vl_dsift_with_gaussian_window

(

VlDsiftFilter *

self

)

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

Definition at line 508 of file dsift.c.

void vl_dsift_delete

(

VlDsiftFilter *

self

)

Delete DSIFT filter.

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

Parameters:

self	DSIFT filter.

Definition at line 493 of file dsift.c.

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 424 of file dsift.c.

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 476 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 673 of file dsift.c.

void vl_imconvcol_vf	(	float *	dst,
		int	dst_stride,
		float const *	src,
		int	src_width,
		int	src_height,
		int	src_stride,
		float const *	filt,
		int	filt_begin,
		int	filt_end,
		int	step,
		unsigned int	flags
	)

Definition at line 794 of file dsift.c.

void vl_imconvcoltri_f	(	float *	dest,
		vl_size	destStride,
		float const *	image,
		vl_size	imageWidth,
		vl_size	imageHeight,
		vl_size	imageStride,
		vl_size	filterSize,
		vl_size	step,
		unsigned int	flags
	)

convolution triangular kernel

Definition at line 956 of file dsift.c.