From: Quaternion fractional-order color orthogonal moment-based image representation and recognition
CCPs (%) KNN | ||||||||
---|---|---|---|---|---|---|---|---|
 | k=12 | k=28 | ||||||
SNR (dB) | QFr-RHFM s[3] | QFr-GLMs | QFr-PST s[24] | QFr-PCT s[24] | QFr-RHFM s[3] | QFr-GLMs | QFr-PST s[24] | QFr-PCT s[24] |
∞ | 97.8 | 100 | 96.3 | 97.2 | 100 | 100 | 100 | 100 |
25 | 94.2 | 100 | 92.2 | 93.6 | 96.3 | 100 | 98.7 | 97.1 |
20 | 89.8 | 96.4 | 82.4 | 83.9 | 90.3 | 99.6 | 92.3 | 91.8 |
15 | 85.4 | 89.8 | 80.3 | 81.1 | 89.5 | 96.3 | 90.3 | 88.8 |
10 | 68.9 | 79.2 | 60.2 | 64.3 | 77.6 | 85.9 | 84.1 | 82.7 |
5 | 50.2 | 67.7 | 51.1 | 55.8 | 59.8 | 69.3 | 62.4 | 61.9 |
0 | 25.6 | 31.2 | 23.6 | 24.1 | 35.8 | 40.9 | 30.3 | 29.8 |