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Summary of ABCD features and their relative weights
| Features | Definition | Score | Weight factor |
|---|---|---|---|
| Asymmetry | In 0,1 or 2 assess shape or color Asymmetry | 0–2 | *1.3 |
| Border | Abrupt ending pattern at the periphery in 0–8 segments | 0–8 | *1.0 |
| Color | Presence of up to six colors (white, red, light brown, dark brown, blue gray, black) | 1–6 | *0.5 |
| Parameter D | Specified by three different methods, geometric features, texture features, and dermoscopic structure features. | 1–6 | *0.5 |
