Table 3 MOS grading evaluation
From: Fragile watermarking based on incomplete cryptography for copyright protection
MOS grade | Description |
|---|---|
5 | Deterioration is imperceptible |
4 | Deterioration is perceptible but not annoying |
3 | Degradation is slightly annoying |
2 | Deterioration is annoying |
1 | Deterioration is very annoying |