| 4-points congruent sets for robust pairwise surface registration Recent countries visiting this post |  |
 | 9 | United States |
 | 4 | China |
 | 2 | |
 | 1 | Russian Federation |
| 4-points congruent sets for robust pairwise surface registration Recent countries visiting this post | |
| 9 | United States |
| 4 | China |
| 2 | |
| 1 | Russian Federation |