Table 4. The importance weights of the engineered features.
| Features | Accuracy | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| GF | 0.7450 | D(19,21) | D(13,15) | D(11,14) | θ(47,46,45) | D(18,22) | D(12,16) | θ(40,38,51) | D(14,17) | D(17,21) | D(27,29) |
| 0.1071 | 0.1042 | 0.1036 | 0.1036 | 0.0691 | 0.0649 | 0.0567 | 0.0563 | 0.0539 | 0.0425 | ||
| 0.7207 | D(19,21) | D(13,15) | θ(47,46,45) | D(14,17) | D(12,16) | D(27,31) | θ(40,38,51) | D(17,20) | D(60,26) | D(11,14) | |
| 0.3191 | 0.1219 | 0.0755 | 0.0724 | 0.0568 | 0.0469 | 0.0460 | 0.0387 | 0.0272 | 0.0223 | ||
| 0.7082 | D(19,21) | D(13,15) | D(14,17) | θ(47,46,45) | D(32,38) | θ(40,38,51) | D(27,29) | D(27,31) | D(18,22) | D(17,20) | |
| 0.2814 | 0.1237 | 0.0848 | 0.0655 | 0.0448 | 0.0438 | 0.0359 | 0.0352 | 0.0330 | 0.0314 | ||
| TF | 0.9460 | 71 | 2,241 | 2,156 | 759 | 603 | 278 | 1,313 | 2,857 | 998 | 4,918 |
| 0.5581 | 0.1903 | 0.1172 | 0.0423 | 0.0345 | 0.0252 | 0.0103 | 0.0037 | 0.0032 | 0.0029 | ||
| 0.9621 | 2,241 | 603 | 759 | 71 | 2,156 | 998 | 2,857 | 5,656 | 6,376 | 4,918 | |
| 0.5969 | 0.1576 | 0.1341 | 0.0438 | 0.0170 | 0.0150 | 0.0069 | 0.0043 | 0.0038 | 0.0030 | ||
| 0.9646 | 2,241 | 603 | 759 | 71 | 2,156 | 2,857 | 6,376 | 3,190 | 278 | 639 | |
| 0.4955 | 0.2714 | 0.1125 | 0.0413 | 0.0300 | 0.0092 | 0.0065 | 0.0045 | 0.0039 | 0.0038 | ||
| FF | 0.9869 | 2,241 | 71 | 759 | 2,156 | 603 | 998 | 639 | 413 | 4918 | 2,857 |
| 0.4549 | 0.3035 | 0.1044 | 0.0696 | 0.0153 | 0.0105 | 0.0101 | 0.0059 | 0.0056 | 0.0031 | ||
| D(17,20) | D(13,15) | D(11,14) | D(60,26) | D(12,16) | θ(40,38,51) | D(32,38) | D(27,31) | D(27,29) | D(14,17) | ||
| 8.356E-04 | 1.086E-04 | 4.087E-05 | 3.386E-05 | 2.394E-05 | 1.481E-05 | 1.446E-05 | 4.148E-06 | 1.905E-06 | 6.953E-07 | ||
| 0.9822 | 2,241 | 71 | 603 | 759 | 2,156 | 278 | 6,376 | 998 | 2,857 | 1,124 | |
| 0.3773 | 0.2860 | 0.1199 | 0.0986 | 0.0706 | 0.0104 | 0.0084 | 0.0077 | 0.0042 | 0.0031 | ||
| θ(47,46,45) | D(11,14) | D(17,20) | D(18,22) | θ(40,38,51) | D(12,16) | D(13,15) | D(27,29) | D(14,17) | D(27,31) | ||
| 4.454E-04 | 1.849E-04 | 1.721E-04 | 1.077E-04 | 1.028E-04 | 4.199E-05 | 3.917E-05 | 2.360E-05 | 2.193E-05 | 1.923E-05 | ||
| 0.9899 | 603 | 2,241 | 71 | 759 | 2,156 | 2,857 | 998 | 6,376 | 639 | 5,345 | |
| 0.5134 | 0.2825 | 0.0684 | 0.0573 | 0.0443 | 0.0047 | 0.0046 | 0.0041 | 0.0038 | 0.0031 | ||
| D(32,38) | θ(40,38,51) | D(60,26) | D(11,14) | D(18,22) | D(27,29) | D(13,15) | D(17,20) | θ(47,46,45) | D(12,16) | ||
| 1.155E-04 | 6.538E-05 | 4.465E-05 | 4.365E-05 | 4.302E-05 | 4.263E-05 | 9.909E-06 | 5.448E-06 | 5.448E-06 | 5.788E-07 |
GF, geometric features; TF, texture features; FF, fusion features.