Table 10.

Studies analyzing leaf-specific features either solely or in combination with other leaf features

Organ	Feature	Leaf-specific descriptor	Studies
Leaf	Vein	Run-length features	[53]
		Leaf vein and areoles morphology	[78–80]
	Shape, vein	Graph representations of veins	[101]
		$A_{vein}/A_{leaf}$	[5, 144]
		Calculating the density of end points and branch points	[107, 108]
		FracDim	[14, 65, 67]
		SC,SIFT	[139]
		Extended circular covariance histogram	[4]
	Color, shape, texture, vein	$A_{vein}/A_{leaf}$	[43, 48]
	Margin	Margin signature	[31]
		Leaf tooth features (total number of leaf teeth, ratio between the number of leaf teeth and the length of the leaf margin expressed in pixels, leaf-sharpness and leaf-obliqueness)	[66]
		SC-based descriptors: leaf contour, spatial correlation between salient points of the leaf and its margin	[93]
	Shape margin	CSS	[18, 20]
		Sequence representation of leaf margins where teeth are viewed as symbols of a multivariate real valued alphabet	[21]
		Morphological properties of margin shape (13 attributes)	[85]
		Margin statistics (average peak height, peak height variance, average peak distance and peak distance variance)	[73]