Quality of image | Level of edge discontinuity | Amount of detail | Level of noise |
Excellent | 5 | 5 | 5 |
Very good | 4 | 4 | 4 |
Acceptable | 3 | 3 | 3 |
Poor quality | 2 | 2 | 2 |
Non-acceptable | 1 | 1 | 1 |