Fast Spherical Retina Keypoint, a feature detector, and descriptor for the image with huge distortion, such as ultra-wide the filed-of-view fisheye cameras and omnidirectional cameras.
| Feature Type | FSRK | BRISK | ORB | FREAK(FAST) |
|---|---|---|---|---|
| Number | 406 | 91 | 555 | 156 |
| Number (RANSAC) | 217 | 64 | 92 | 101 |
FSRK:
ORB:
FREAK(FAST):
BRISK: