Table 3.
Results of nodule classification at wavelet first decomposition level
| Base | Angle | Sub-band | Features | Specificity | Sensitivity | Preciseness |
|---|---|---|---|---|---|---|
| Db1 | 0° | LH | Autc-Clsh | 82.60% | 63.63% | 73.33% |
| Db2 | 0° | LH | Clsh-IMC2 | 86.95% | 45.45% | 66.66% |
| Db4 | 0° | HH | Autc-Diss | 60.86% | 95.45% | 77.77% |
| Db1 | 45° | LH | Autc-Clsh | 86.95% | 59.09% | 73.33% |
| Db2 | 45° | LH | Autc-IMC2 | 69.56% | 68.18% | 68.88% |
| Db4 | 45° | LH | Autc-IMC2 | 69.56% | 90.90% | 80% |
| Db1 | 90° | LH | Clpr-Clsh | 73.91% | 90.90% | 82.22% |
| Db2 | 90° | LH | Clpr-Svar | 82.60% | 59.09% | 71.11% |
| Db4 | 90° | HH | Autc-Diffv | 52.17% | 100% | 75.55% |
| Db1 | 135° | LH | Clpr-Sent | 86.95% | 72.72% | 80% |
| Db2 | 135° | LH | Clsh-Diffe | 86.95% | 72.72% | 80% |
| Db4 | 135° | HH | Autc-Cont | 65.21% | 90.90% | 77.77% |
The bold data represent the best value obtained.