Table A2.
Confusion matrix of PCA + LDA and HMM using Cohn-Kanade (CK), JAFFE (JA), and AT&T (AT) databases of facial expressions (Unit: %).
| Happiness | Sadness | Anger | Disgust | Surprise | Fear | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CK | JA | AT | CK | JA | AT | CK | JA | AT | CK | JA | AT | CK | JA | AT | CK | JA | AT | |
| Happiness | 68.1 | 70.9 | 69.1 | 7.9 | 8 | 9.1 | 5.6 | 5.4 | 6.2 | 7.9 | 5.9 | 5.5 | 4.7 | 3.6 | 5.8 | 5.8 | 6.2 | 4.3 |
| Sadness | 6.8 | 8.8 | 10 | 72.3 | 69.5 | 65.5 | 7.2 | 6 | 4.8 | 5.8 | 4.8 | 7.9 | 4 | 5 | 5.8 | 3.9 | 5.9 | 6 |
| Anger | 4.9 | 3.2 | 3.3 | 7.9 | 4.8 | 5.1 | 70.9 | 74.9 | 75 | 5.8 | 5.5 | 3.4 | 5.6 | 4.6 | 5.2 | 4.9 | 7 | 8 |
| Disgust | 3.9 | 6.7 | 4.3 | 8.5 | 7.9 | 7.5 | 7.8 | 7.8 | 6.5 | 68.5 | 61 | 66.7 | 5.6 | 10 | 8.9 | 5.7 | 6.6 | 6.1 |
| Surprise | 6.1 | 3.3 | 5.7 | 4.3 | 4.2 | 3.2 | 5.2 | 3.4 | 6.8 | 6.1 | 8.1 | 9 | 73.6 | 78.9 | 71 | 4.7 | 2.1 | 4.3 |
| Fear | 5.8 | 3.9 | 3.6 | 6.6 | 5.7 | 6.1 | 6.9 | 7.9 | 8.1 | 5.8 | 5.7 | 4.4 | 5.9 | 5.8 | 4.8 | 69 | 71 | 73 |
| Average | 69.36 | 69.10 | 74.24 | 65.40 | 74.50 | 71.00 | ||||||||||||