Research Article
Thai Finger-Spelling Recognition Using a Cascaded Classifier Based on Histogram of Orientation Gradient Features
Table 1
The performance of 21 trained classifiers (adjusting FPR).
| Class | FPR = 0.05 | FPR = 0.10 | FPR = 0.15 | FPR = 0.20 | FPR = 0.25 | FPR = 0.30 | Hit | Miss | False | Hit | Miss | False | Hit | Miss | False | Hit | Miss | False | Hit | Miss | False | Hit | Miss | False |
| “1” | 16 | 34 | 0 | 22 | 28 | 6 | 33 | 17 | 42 | 39 | 11 | 99 | 42 | 8 | 177 | 45 | 5 | 198 | “2” | 41 | 9 | 1 | 40 | 10 | 12 | 44 | 6 | 55 | 49 | 1 | 138 | 8 | 2 | 279 | 48 | 2 | 379 | “3” | 43 | 7 | 3 | 47 | 3 | 12 | 49 | 1 | 58 | 48 | 2 | 81 | 48 | 2 | 117 | 43 | 7 | 669 | “4” | 24 | 26 | 0 | 40 | 10 | 17 | 41 | 9 | 51 | 37 | 13 | 89 | 40 | 10 | 229 | 31 | 19 | 520 | “5” | 30 | 20 | 2 | 45 | 5 | 17 | 46 | 4 | 47 | 48 | 2 | 91 | 44 | 6 | 158 | 30 | 20 | 410 | “” | 47 | 3 | 0 | 49 | 1 | 6 | 50 | 0 | 20 | 50 | 0 | 69 | 46 | 4 | 131 | 46 | 4 | 158 | “” | 5 | 45 | 0 | 28 | 22 | 8 | 21 | 29 | 80 | 33 | 17 | 140 | 42 | 8 | 276 | 37 | 13 | 376 | “” | 29 | 21 | 4 | 39 | 11 | 8 | 41 | 9 | 22 | 48 | 2 | 42 | 42 | 8 | 194 | 32 | 18 | 234 | “” | 30 | 20 | 1 | 29 | 21 | 4 | 40 | 10 | 81 | 44 | 6 | 164 | 27 | 23 | 231 | 30 | 20 | 316 | “” | 6 | 44 | 1 | 22 | 28 | 9 | 15 | 35 | 35 | 18 | 32 | 95 | 23 | 27 | 244 | 33 | 17 | 376 | “” | 39 | 11 | 0 | 42 | 8 | 32 | 44 | 6 | 114 | 36 | 14 | 203 | 31 | 19 | 227 | 26 | 24 | 502 | “” | 36 | 14 | 0 | 44 | 6 | 3 | 47 | 3 | 34 | 45 | 5 | 220 | 38 | 12 | 633 | 40 | 10 | 899 | “” | 47 | 3 | 0 | 44 | 6 | 0 | 45 | 5 | 36 | 43 | 7 | 112 | 42 | 8 | 198 | 43 | 7 | 354 | “” | 25 | 25 | 3 | 32 | 18 | 29 | 36 | 14 | 78 | 38 | 12 | 133 | 40 | 10 | 276 | 36 | 14 | 366 | “” | 24 | 26 | 2 | 33 | 17 | 16 | 39 | 11 | 92 | 42 | 8 | 99 | 45 | 5 | 301 | 36 | 14 | 293 | “” | 36 | 14 | 8 | 36 | 14 | 14 | 39 | 11 | 90 | 46 | 4 | 153 | 39 | 11 | 293 | 39 | 11 | 570 | “” | 18 | 32 | 1 | 38 | 12 | 6 | 39 | 11 | 21 | 44 | 6 | 54 | 26 | 24 | 647 | 6 | 24 | 786 | “” | 12 | 38 | 1759 | 47 | 3 | 8 | 49 | 1 | 6 | 49 | 1 | 87 | 47 | 3 | 107 | 41 | 9 | 483 | “” | 36 | 14 | 0 | 43 | 7 | 11 | 42 | 8 | 19 | 47 | 3 | 66 | 44 | 6 | 102 | 44 | 6 | 234 | “” | 16 | 34 | 0 | 23 | 27 | 12 | 30 | 20 | 35 | 39 | 11 | 68 | 35 | 15 | 363 | 40 | 10 | 278 | “” | 42 | 8 | 0 | 43 | 7 | 11 | 42 | 8 | 39 | 46 | 4 | 39 | 39 | 11 | 113 | 43 | 7 | 242 |
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