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# _VlSiftKeypoint Struct Reference

SIFT filter keypoint. More...

`#include <sift.h>`

## Data Fields
int | o
int | ix
int | iy
int | is
vl_single | x
vl_single | y
vl_single | s
vl_single | sigma

## Detailed Description

This structure represent a keypoint as extracted by the SIFT filter VLSiftFilt.

## Field Documentation

int _VlSiftKeypoint::o

o coordinate (octave).

int _VlSiftKeypoint::ix

Integer unnormalized x coordinate.

int _VlSiftKeypoint::iy

Integer unnormalized y coordinate.

int _VlSiftKeypoint::is

Integer s coordinate.

vl_single _VlSiftKeypoint::x

x coorindate.

vl_single _VlSiftKeypoint::y

u coordinate.

vl_single _VlSiftKeypoint::s

x coordinate.

vl_single _VlSiftKeypoint::sigma

scale.

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

- sift.h