* * This structure represent a keypoint as extracted by the SIFT * filter ::VlSiftFilt.
< Integer s coordinate.
< Integer unnormalized x coordinate.
< Integer unnormalized y coordinate.
< o coordinate (octave).
< s coordinate.
< scale.
< x coordinate.
< y coordinate.
See Implementation
* * This structure represent a keypoint as extracted by the SIFT * filter ::VlSiftFilt.