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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

## Detailed Description

This filter implements the SIFT detector and descriptor.

## Field Documentation

vl_sift_pix* VlSiftFilt::dog

current DoG data.

double VlSiftFilt::dsigma0

delta-smoothing.

double VlSiftFilt::edge_thresh

edge threshold.

vl_sift_pix* VlSiftFilt::gaussFilter

current Gaussian filter

double VlSiftFilt::gaussFilterSigma

current Gaussian filter std

vl_size VlSiftFilt::gaussFilterWidth

current Gaussian filter width

vl_sift_pix* VlSiftFilt::grad

GSS gradient data.

int VlSiftFilt::grad_o

GSS gradient data octave.

int VlSiftFilt::height

image height.

VlSiftKeypoint* VlSiftFilt::keys

detected keypoints.

int VlSiftFilt::keys_res

size of the keys buffer.

double VlSiftFilt::magnif

magnification factor.

int VlSiftFilt::nkeys

number of detected keypoints.

double VlSiftFilt::norm_thresh

norm threshold.

int VlSiftFilt::O

number of octaves.

int VlSiftFilt::o_cur

current octave.

int VlSiftFilt::o_min

minimum octave index.

vl_sift_pix* VlSiftFilt::octave

current GSS data.

int VlSiftFilt::octave_height

current octave height.

int VlSiftFilt::octave_width

current octave width.

double VlSiftFilt::peak_thresh

peak threshold.

int VlSiftFilt::S

number of levels per octave.

int VlSiftFilt::s_max

maximum level index.

int VlSiftFilt::s_min

minimum level index.

double VlSiftFilt::sigma0

smoothing of pyramid base.

double VlSiftFilt::sigmak

k-smoothing

double VlSiftFilt::sigman

nominal image smoothing.

vl_sift_pix* VlSiftFilt::temp

temporary pixel buffer.

int VlSiftFilt::width

image width.

double VlSiftFilt::windowSize

size of Gaussian window (in spatial bins)

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

- sift.h