Table 3 Mean opinion scores obtained for original and colorized images
| Â | Original image | FIVC method | CUO method | Scribble boosting |
|---|---|---|---|---|
Elephant | 8.91 ± 1.26 | 3.39 ± 2.12 | 3.26 ± 1.78 | 7.97 ± 1.29 |
Face A | 7.76 ± 1.78 | 4.91 ± 1.75 | 4.38 ± 1.99 | 7.53 ± 1.73 |
Face B | 8.44 ± 1.85 | 2.03 ± 1.17 | 2.24 ± 1.65 | 4.15 ± 2.05 |
Face C | 5.82 ± 2.26 | 4.09 ± 2.17 | 4.24 ± 1.99 | 7.41 ± 1.99 |
Face D | - | 5.47 ± 2.03 | 6.18 ± 2.11 | 6.97 ± 1.93 |
Flower | 8.91 ± 1.56 | 4.21 ± 2.12 | 3.71 ± 1.99 | 8.03 ± 1.88 |
Forest | 8.56 ± 1.88 | 4.97 ± 1.88 | 3.88 ± 2.23 | 7.44 ± 1.62 |
Meadow | 8.24 ± 1.72 | 4.71 ± 1.99 | 5.74 ± 1.96 | 6.94 ± 1.92 |
Tree | - | 3.06 ± 1.52 | 3.82 ± 1.66 | 4.82 ± 1.95 |
Average | 8.09 ± 1.08 | 4.09 ± 1.09 | 4.16 ± 1.2 | 6.81 ± 1.38 |