_VlSiftFilt Struct Reference

SIFT filter. More...

#include <sift.h>

Data Fields
double	sigman
double	sigma0
double	sigmak
double	dsigma0
int	width
int	height
int	O
int	S
int	o_min
int	s_min
int	s_max
int	o_cur
vl_sift_pix *	temp
vl_sift_pix *	octave
vl_sift_pix *	dog
int	octave_width
int	octave_height
vl_sift_pix *	gaussFilter
double	gaussFilterSigma
vl_size	gaussFilterWidth
VlSiftKeypoint *	keys
int	nkeys
int	keys_res
double	peak_thresh
double	edge_thresh
double	norm_thresh
double	magnif
double	windowSize
vl_sift_pix *	grad
int	grad_o

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Detailed Description

This filter implements the SIFT detector and descriptor.

Definition at line 49 of file sift.h.

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Field Documentation

vl_sift_pix* _VlSiftFilt::dog

current DoG data.

Definition at line 67 of file sift.h.

Referenced by vl_sift_delete().

double _VlSiftFilt::dsigma0

delta-smoothing.

Definition at line 54 of file sift.h.

double _VlSiftFilt::edge_thresh

edge threshold.

Definition at line 80 of file sift.h.

vl_sift_pix* _VlSiftFilt::gaussFilter

current Gaussian filter

Definition at line 71 of file sift.h.

Referenced by vl_sift_delete().

double _VlSiftFilt::gaussFilterSigma

current Gaussian filter std

Definition at line 72 of file sift.h.

vl_size _VlSiftFilt::gaussFilterWidth

current Gaussian filter width

Definition at line 73 of file sift.h.

vl_sift_pix* _VlSiftFilt::grad

GSS gradient data.

Definition at line 85 of file sift.h.

Referenced by update_gradient(), vl_sift_calc_keypoint_descriptor(), and vl_sift_delete().

int _VlSiftFilt::grad_o

GSS gradient data octave.

Definition at line 86 of file sift.h.

Referenced by update_gradient().

int _VlSiftFilt::height

image height.

Definition at line 57 of file sift.h.

Referenced by vl_sift_process_first_octave(), and vl_sift_process_next_octave().

VlSiftKeypoint* _VlSiftFilt::keys

detected keypoints.

Definition at line 75 of file sift.h.

Referenced by vl_sift_delete(), and vl_sift_detect().

int _VlSiftFilt::keys_res

size of the keys buffer.

Definition at line 77 of file sift.h.

Referenced by vl_sift_detect().

double _VlSiftFilt::magnif

magnification factor.

Definition at line 82 of file sift.h.

int _VlSiftFilt::nkeys

number of detected keypoints.

Definition at line 76 of file sift.h.

Referenced by vl_sift_detect(), and vl_sift_process_first_octave().

double _VlSiftFilt::norm_thresh

norm threshold.

Definition at line 81 of file sift.h.

int _VlSiftFilt::O

number of octaves.

Definition at line 58 of file sift.h.

Referenced by vl_sift_keypoint_init(), and vl_sift_process_first_octave().

int _VlSiftFilt::o_cur

current octave.

Definition at line 63 of file sift.h.

Referenced by update_gradient(), vl_sift_calc_keypoint_descriptor(), vl_sift_calc_keypoint_orientations(), vl_sift_detect(), vl_sift_process_first_octave(), and vl_sift_process_next_octave().

int _VlSiftFilt::o_min

minimum octave index.

Definition at line 60 of file sift.h.

Referenced by vl_sift_keypoint_init().

vl_sift_pix* _VlSiftFilt::octave

current GSS data.

Definition at line 66 of file sift.h.

Referenced by vl_sift_delete(), and vl_sift_get_octave().

int _VlSiftFilt::octave_height

current octave height.

Definition at line 69 of file sift.h.

int _VlSiftFilt::octave_width

current octave width.

Definition at line 68 of file sift.h.

double _VlSiftFilt::peak_thresh

peak threshold.

Definition at line 79 of file sift.h.

int _VlSiftFilt::S

number of levels per octave.

Definition at line 59 of file sift.h.

Referenced by vl_sift_detect(), and vl_sift_keypoint_init().

int _VlSiftFilt::s_max

maximum level index.

Definition at line 62 of file sift.h.

Referenced by update_gradient(), vl_sift_calc_keypoint_descriptor(), vl_sift_calc_keypoint_orientations(), vl_sift_keypoint_init(), and vl_sift_new().

int _VlSiftFilt::s_min

minimum level index.

Definition at line 61 of file sift.h.

Referenced by update_gradient(), vl_sift_calc_keypoint_descriptor(), vl_sift_calc_keypoint_orientations(), vl_sift_get_octave(), vl_sift_keypoint_init(), and vl_sift_new().

double _VlSiftFilt::sigma0

smoothing of pyramid base.

Definition at line 52 of file sift.h.

Referenced by vl_sift_detect(), vl_sift_keypoint_init(), and vl_sift_new().

double _VlSiftFilt::sigmak

k-smoothing

Definition at line 53 of file sift.h.

Referenced by vl_sift_new().

double _VlSiftFilt::sigman

nominal image smoothing.

Definition at line 51 of file sift.h.

vl_sift_pix* _VlSiftFilt::temp

temporary pixel buffer.

Definition at line 65 of file sift.h.

Referenced by vl_sift_delete().

int _VlSiftFilt::width

image width.

Definition at line 56 of file sift.h.

Referenced by vl_sift_process_first_octave(), and vl_sift_process_next_octave().

double _VlSiftFilt::windowSize

size of Gaussian window (in spatial bins)

Definition at line 83 of file sift.h.

Referenced by vl_sift_calc_keypoint_descriptor(), and vl_sift_calc_raw_descriptor().

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The documentation for this struct was generated from the following file:

• sift.h