Table 2 Keypoints and SIFT matches when copy-move is carried out with/without keypoint removal and with keypoint removal-injection
From: Removal and injection of keypoints for SIFT-based copy-move counter-forensics
| Â | No keypoint | Keypoint | Keypoint removal-injection |
|---|---|---|---|
| Â | removal | removal | Â |
Church | Â | Â | Â |
 Keypoints | 10 | 0 | 3 |
 Matches | 8 | 0 | 0 |
Nativity | Â | Â | Â |
 Keypoints | 62 | 5 | 14 |
 Matches | 41 | 2 | 3 |