| Retinal Blood Vessel Extraction by Using Multi-resolution Matched Filtering and Directional Region Growing Segmentation Recent countries visiting this post |  |
 | 9 | United States |
 | 3 | |
 | 1 | Germany |
| Retinal Blood Vessel Extraction by Using Multi-resolution Matched Filtering and Directional Region Growing Segmentation Recent countries visiting this post | |
| 9 | United States |
| 3 | |
| 1 | Germany |