Table 2. Details of the wavelets used in this study.
| Wavelets | Abbreviation | NA | Decomposition mode |
|---|---|---|---|
| Haar | haar | N/A | LLH, LHL, LHH, HLL, HLH, HHL, HHH, LLL |
| Daubechies N | dbN | 1, 10, 20 | |
| Symlets N | symN | 2, 10, 20 | |
| Coiflets N | coifN | 1, 2, 3, 4, 5 | |
| Biorthogonal Nr.Nd | bior Nr.Nd | 1.1, 2.2, 3.3, 4.4, 5.5 | |
| Reverse biorthogonal Nr.Nd | rbio Nr.Nd | 1.1, 2.2, 3.3, 4.4, 5.5 | |
| “Discrete” FIR approximation of Meyer | dmey | N/A |
A, decomposition progression of wavelets. “N” in dbN, symN, and coifN refers to the number of vanishing moments. In biorNr.Nd and rbioNr.Nd, “Nr” is the number of the order of the functions used for reconstruction and “Nd” is the order of the functions used for decomposition (36). FIR, finite impulse response; N/A, not applicable; L, low-pass decomposition filter; H, high-pass decomposition filter.