| Code Value | Definition |
|---|---|
| EFTS7 | Minutiae are nearest neighbors in eight octants; ridge count is one more than the number of intervening ridges |
| OCTANT | Minutiae are nearest neighbors in eight octants; ridge count is the number of intervening ridges |
| QUADRANT | The minutiae used for ridge counts are the nearest neighbors in four quadrants, defined by the image's vertical and horizontal axes |