Table 1 The table shows the grouping of the taxonomy features and its idealistic feature values for the creation of the database for automatic classification purpose
From: Discriminative histogram taxonomy features for snake species identification
Feature group | Features | Feature name | Spectacled cobra | King cobra | Common krait | Russel’s viper | Saw scaled viper | Hump nosed pit viper |
|---|---|---|---|---|---|---|---|---|
Top | F 1 | Rostral | 1 | 1 | 1 | 1 | 1 | 1 |
F 2 | Internasal | 2 | 2 | 2 | 1 | 1 | 2 | |
F 3 | Prefrontal | 2 | 2 | 2 | 1 | 1 | 2 | |
F 4 | Supraocular | 2 | 2 | 2 | 1 | 1 | 2 | |
F 5 | Frontal | 2 | 2 | 2 | 1 | 1 | 2 | |
F 6 | Parietals | 2 | 2 | 2 | 1 | 1 | 2 | |
F 7 | V mark on head | 0 | 0 | 0 | 1 | 0 | 0 | |
F 8 | Triangular head | 0 | 0 | 0 | 1 | 0 | 1 | |
F 9 | Two dark patch on head | 0 | 0 | 0 | 1 | 0 | 0 | |
F 10 | Number of scales between Supraoculars | 1 | 1 | 1 | 6-9 | 6-9 | 1 | |
F 11 | Big occipital | 0 | 1 | 0 | 0 | 0 | 0 | |
F 12 | Plus sign in the head | 0 | 0 | 0 | 0 | 1 | 0 | |
Side | F 13 | Small nostril | 1 | 1 | 1 | 0 | 1 | 1 |
F 14 | Round pupil | 1 | 1 | 1 | 0 | 0 | 0 | |
F 15 | Big nostril | 0 | 0 | 0 | 1 | 0 | 0 | |
F 16 | Elliptical pupil | 0 | 0 | 0 | 1 | 1 | 1 | |
F 17 | Loreal | 0 | 0 | 0 | 1 | 1 | 1 | |
F 18 | Nasorostral | 0 | 0 | 0 | 1 | 0 | 0 | |
F 19 | Supranasal | 0 | 0 | 0 | 1 | 0 | 0 | |
F 20 | Triangular brown streaks below/behind eyes | 0 | 0 | 0 | 1 | 0 | 0 | |
F 21 | Subocular | 0 | 0 | 0 | 1 | 1 | 1 | |
F 22 | Nasal | 2 | 2 | 2 | 1 | 3 | 1 | |
F 23 | Preoculars | 1 | 1 | 1 | 4 | 4 | 4 | |
F 24 | Postoculars | 3 | 3 | 2 | 4 | 4 | 4 | |
F 25 | Supralabial scale | 6-7 | 6-7 | 6-7 | 9-11 | 9-11 | 9-11 | |
F 38 | Pit between eyes and nose | 0 | 0 | 0 | 0 | 0 | 1 | |
Bottom | F 26 | Mental | 1 | 1 | 1 | 1 | 1 | 1 |
F 27 | Asterior sublingual | 1 | 1 | 1 | 1 | 1 | 1 | |
F 28 | Posterior sublingual | 1 | 1 | 1 | 1 | 1 | 1 | |
Body | F 29 | Round/smooth scale | 1 | 1 | 1 | 0 | 0 | 0 |
F 30 | Hood | 1 | 0 | 0 | 0 | 0 | 0 | |
F 31 | Spectacled mark on hood | 1 | 0 | 0 | 0 | 0 | 0 | |
F 32 | Keeled scale | 0 | 0 | 0 | 1 | 1 | 1 | |
F 33 | Spots on dorsal scale | 0 | 0 | 0 | 1 | 1 | 1 | |
F 34 | White/yellow stripes on dorsal scale | 0 | 1 | 1 | 0 | 0 | 0 | |
F 35 | Black stripes on ventral scale | 0 | 1 | 0 | 0 | 0 | 0 | |
F 36 | Enlarged and Hexagonal vertebral scale | 0 | 0 | 1 | 0 | 0 | 0 | |
F 37 | Ventral scale | 1 | 1 | 1 | 1 | 1 | 1 |