| Quadrilateral Signboard Detection and Text Extraction Recent countries visiting this post |  |
 | 8 | United States |
 | 1 | |
 | 1 | Italy |
 | 1 | Switzerland |
| Quadrilateral Signboard Detection and Text Extraction Recent countries visiting this post | |
| 8 | United States |
| 1 | |
| 1 | Italy |
| 1 | Switzerland |