Structure to represent an affine invariant image feature. More...
#include <imgfeatures.h>
Data Fields | |
| double | x |
| x coord | |
| double | y |
| y coord | |
| double | a |
| Oxford-type affine region parameter. | |
| double | b |
| Oxford-type affine region parameter. | |
| double | c |
| Oxford-type affine region parameter. | |
| double | scl |
| scale of a Lowe-style feature | |
| double | ori |
| orientation of a Lowe-style feature | |
| int | d |
| descriptor length | |
| double | descr [FEATURE_MAX_D] |
| descriptor | |
| int | type |
| feature type, OXFD or LOWE | |
| int | category |
| all-purpose feature category | |
| struct feature * | fwd_match |
| matching feature from forward image | |
| struct feature * | bck_match |
| matching feature from backmward image | |
| struct feature * | mdl_match |
| matching feature from model | |
| CvPoint2D64f | img_pt |
| location in image | |
| CvPoint2D64f | mdl_pt |
| location in model | |
| void * | feature_data |
| user-definable data | |
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
1.6.1