PARP Research Group University of Murcia, Spain


feature Struct Reference

#include <imgfeatures.h>

List of all members.

Public Attributes

double x
double y
double a
double b
double c
double scl
double ori
int d
double descr [FEATURE_MAX_D]
int type
int category
struct featurefwd_match
struct featurebck_match
struct featuremdl_match
CvPoint2D64f img_pt
CvPoint2D64f mdl_pt
void * feature_data


Detailed Description

Structure to represent an affine invariant image feature. The fields x, y, a, b, c represent the affine region around the feature:

a(x-u)(x-u) + 2b(x-u)(y-v) + c(y-v)(y-v) = 1

Definition at line 44 of file imgfeatures.h.


Member Data Documentation

double feature::x

x coord

Definition at line 46 of file imgfeatures.h.

double feature::y

y coord

Definition at line 47 of file imgfeatures.h.

double feature::a

Oxford-type affine region parameter

Definition at line 48 of file imgfeatures.h.

double feature::b

Oxford-type affine region parameter

Definition at line 49 of file imgfeatures.h.

double feature::c

Oxford-type affine region parameter

Definition at line 50 of file imgfeatures.h.

double feature::scl

scale of a Lowe-style feature

Definition at line 51 of file imgfeatures.h.

double feature::ori

orientation of a Lowe-style feature

Definition at line 52 of file imgfeatures.h.

descriptor length

Definition at line 53 of file imgfeatures.h.

Referenced by descr_dist_sq().

double feature::descr[FEATURE_MAX_D]

descriptor

Definition at line 54 of file imgfeatures.h.

Referenced by descr_dist_sq().

feature type, OXFD or LOWE

Definition at line 55 of file imgfeatures.h.

Referenced by draw_features(), and export_features().

all-purpose feature category

Definition at line 56 of file imgfeatures.h.

struct feature* feature::fwd_match [read]

matching feature from forward image

Definition at line 57 of file imgfeatures.h.

struct feature* feature::bck_match [read]

matching feature from backmward image

Definition at line 58 of file imgfeatures.h.

struct feature* feature::mdl_match [read]

matching feature from model

Definition at line 59 of file imgfeatures.h.

CvPoint2D64f feature::img_pt

location in image

Definition at line 60 of file imgfeatures.h.

Referenced by kdtree_bbf_spatial_knn().

CvPoint2D64f feature::mdl_pt

location in model

Definition at line 61 of file imgfeatures.h.

Referenced by kdtree_bbf_spatial_knn().

user-definable data

Definition at line 62 of file imgfeatures.h.

Referenced by _sift_features(), kdtree_bbf_knn(), and ransac_xform().


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



QVision framework. PARP research group, copyright 2007, 2008.