Table 1.

A categorization of feature descriptors commonly used in the computerized analysis of dermoscopic images.

Clinical features	Feature descriptors	References
Asymmetry	Symmetry distance	[37]
	Lesion's centroid	[38]
Border irregularity	Fourier feature	[39]
	Fractal geometry	[40]
	Area and perimeter	[38, 41, 42]
	Irregularity index	[43, 44]
Color variegation	RGB statistical descriptors	[38, 45]
Diameter	Semimajor axis of the ellipse	[38]
Other features	Pattern analysis	[38, 46, 47]
	Wavelet-based descriptors	[48]
	Texture descriptors	[49]
	Intensity distribution descriptors	[5]
	Haralick descriptors	[50]